19 During maintenance of wagons, check:

Condition of components and parts brake equipment in accordance with their established standards. Parts that do not ensure normal operation of the brake must be replaced;

The correct connection of the sleeves of the brake and supply lines, the opening of the end valves between the cars and the disconnect valves on the supply air ducts, as well as their condition and reliability of fastening. The correctness of the suspension of the sleeve and the reliability of the suspension and closing of the end valve on the tail car. When coupling passenger cars equipped with two brake lines, hoses located on one side of the automatic coupler axle in the direction of travel should be connected;

No touching of the heads of the end sleeves of the brake line by electrical inter-car connections, as well as unauthorized contact between the heads of the end sleeves of the brake and supply lines;

The correctness of switching on the modes of air distributors on each car, taking into account the number of cars in the train;

The density of the braking network of the composition, which must comply with the established standards;

The effect of autobrakes on sensitivity to braking and release, the effect of an electro-pneumatic brake with checking the integrity of the electric circuit of the train, the absence of a short circuit of the wires of the electro-pneumatic brake between themselves and on the car body, voltage in the circuit of the tail car in the braking mode. The operation of the electro-pneumatic brake should be checked from a power source with a stabilized output voltage of 50 V, while the voltage drop in the electric circuit of the electro-pneumatic brake wires in the braking mode in terms of one car of the tested train should be no more than 0.5 V for trains up to 20 cars inclusive and no more than 0.3 V for compositions of greater length. Air distributors and electric air distributors that work unsatisfactorily should be replaced with serviceable ones;

Anti-skid device action (if equipped). To check the mechanical anti-skid device, it is necessary to turn the inertial weight through the window in the sensor housing after complete service braking. In this case, air must be released from brake cylinder trolley to be checked through the relief valve. After the impact on the load has ceased, it should return to its original position, and the brake cylinder should be filled. compressed air to the initial pressure, which is controlled by a pressure gauge on the side wall of the car body. The test must be carried out for each sensor.

To check the electronic anti-skid device, after a full service brake has been performed, it is necessary to check the operation of the relief valves by running a test program. In this case, there should be a sequential discharge of air on the corresponding wheelset and the operation of the corresponding signaling devices for the presence of compressed air pressure of this axle on board the car;

Speed ​​governor action (if equipped). To check, it is necessary to press the button for checking the high-speed regulator after a complete service braking. The pressure in the brake cylinders should increase to the set value, and after the button is pressed, the pressure in the cylinders should decrease to its original value.

After checking, turn on the brakes of the wagons to the mode corresponding to the upcoming top speed train movements;

Magnetic rail brake action (if equipped). After verification, it is necessary emergency braking press the magnetic rail brake test button. In this case, the shoes of the magnetic rail brake should fall onto the rails. After stopping pressing the button, all the shoes of the magnetic rail brake should rise to the upper (transport) position;

Correct adjustment of the brake linkage. The leverage must be adjusted so that the distance from the end of the sleeve of the protective tube of the auto-regulator screw 574B, RTRP-675, RTRP-675M, to the connecting thread on the auto-regulator screw is at least 250 mm when leaving the point of formation and turnover and at least 150 mm when checking at waypoints technical inspection.

When using other types of automatic regulators, the minimum length of the regulating element of the automatic regulator when leaving the point of formation and turnover and when checking at intermediate points of technical inspection must be indicated in the operating manual for a specific car model.

The angles of inclination of the horizontal and vertical levers must ensure the normal operation of the linkage to the limit of wear of the brake pads. In the released state of the brake, the leading horizontal lever (horizontal lever on the side of the brake cylinder rod) must be inclined towards the bogie;

Brake cylinder outlets, which must be within the limits specified in Table III.1 of this Regulation.

The thickness of the brake pads (linings) and their location on the wheel tread.

The thickness of the brake pads for passenger trains must be able to proceed without replacement from the point of formation to the point of return and back, and is established by local rules and regulations based on experience.

The output of the pads from the tread surface beyond the outer edge of the wheel is not allowed.

The minimum thickness of the pads at which they are subject to replacement is set depending on the length of the warranty section, but not less than: cast iron - 12 mm; composite with a metal back - 14 mm, with a mesh-wire frame - 10 mm (blocks with a mesh-wire frame are determined by the ear filled with friction mass).

Check the thickness of the brake pad from the outside, and in case of wedge-shaped wear - at a distance of 50 mm from the thin end.

In case of wear of the side surface of the pad on the side of the wheel flange, check the condition of the traverse, brake shoe and brake shoe suspension, eliminate the identified shortcomings, replace the shoe;

Ceramic-metal overlays with a thickness of 13 mm or less and composite overlays with a thickness of 5 mm or less along the outer radius of the overlays must be replaced. Wedge-shaped wear of linings is not allowed.

Table III.1- Outlet of the rod of the brake cylinders of passenger cars, mm

Notes. 1 In the numerator - with full service braking, in the denominator - with the first stage of braking.

2 The output of the brake cylinder rod with composite pads on passenger cars is specified taking into account the length of the clamp (70 mm) mounted on the stem.

3 The outlets of the brake cylinder rods for other types of cars are installed in accordance with the manual for their operation.

On passenger cars with disc brakes, additionally check:

The total clearance between both linings and the disc on each disc. The gap between both pads and the disc should be no more than 6 mm. On wagons equipped parking brakes, check clearances when releasing after emergency braking;

No air passage check valve on the pipeline between the brake line and the additional feed tank;

The condition of the friction surfaces of the discs (visually with the broach of the cars);

Serviceability of signaling devices for the presence of compressed air pressure on board the car.

20 It is forbidden to install composite blocks on cars, the linkage of which is rearranged for cast-iron blocks (i.e., the tightening axes of the horizontal levers are located in the holes located farther from the brake cylinder), and, conversely, it is not allowed to install cast-iron blocks on cars, the linkage of which rearranged for composite pads, with the exception of wheel pairs of passenger cars with gearboxes, where cast-iron pads can be used up to a speed of 120 km/h.

21 Passenger cars operated on trains with speeds over 120 km/h must be equipped with composite brake pads.

22 When inspecting a train at a station where there is a checkpoint Maintenance, all malfunctions of the brake equipment must be identified for the cars, and parts or devices with defects must be replaced with serviceable ones.

If a malfunction of the brake equipment of cars is detected at stations where there is no maintenance point, it is allowed to follow this car with the brake off, provided that traffic safety is ensured to the nearest maintenance point.

23 At the points of formation and turnover of passenger trains, car inspectors are required to check the serviceability and operation of the parking (hand) brakes, paying attention to the ease of actuation and pressing of the blocks to the wheels.

The same check of the parking (manual) brakes must be carried out by car inspectors at stations with maintenance points preceding steep long descents.

24 Check the distance between the heads of the connecting sleeves of the brake line with electric lugs and the plug connectors of the inter-car electrical connection of the lighting circuit of the cars when they are connected. This distance must be at least 100 mm.

Annex 2

7.1 During maintenance of wagons, check:

– the condition of the units and parts of the braking equipment for compliance with their established standards. Parts that do not ensure normal operation of the brake - replace;

- correct connection of the brake line hoses, opening of the end valves between the cars and disconnecting valves on the supply air ducts, as well as their condition and reliability of fastening, the state of the electrical contact surfaces of the heads of sleeves No. 369A (if necessary, clean the contact surfaces). The correct suspension of the sleeve and the reliability of closing the end valve. When coupling passenger cars equipped with two brake lines, hoses located on one side of the automatic coupler axle in the direction of travel should be connected;

– the correctness of switching on the modes of the air distributors on each car, taking into account the presence of an automatic mode, including in accordance with the axle load and the type of pads;

- the density of the brake network of the composition, which must comply with the established standards;

- the effect of autobrakes on sensitivity to braking and release, the effect of an electro-pneumatic brake with checking the integrity of the electrical circuit in wires No. 1 and 2 of the train, the absence of a short circuit of these wires between themselves and on the car body, voltage in the circuit of the tail car in the braking mode. The operation of the electro-pneumatic brake should be checked from a power source with a stabilized output voltage of 40 V, while the voltage drop in the electrical circuit of wires No. 1 and 2 in the braking mode, in terms of one car of the tested train, should be no more than 0.5 V for trains up to 20 cars inclusive and not more than 0.3 V for compositions of greater length. Air distributors and electric air distributors that work unsatisfactorily should be replaced with serviceable ones;

- the operation of the anti-skid and high-speed regulators on passenger cars with brakes of the Western European type in accordance with separate instructions from the owner of the infrastructure, as well as clause 7.8 of these Rules;

- on cars with auto mode, the output of the auto mode fork should correspond to the load on the axle of the car, the reliability of fastening the contact strip, the support beam on the bogie and auto mode, the damper part and the pressure switch on the bracket, tighten the loose bolts;

- the correct regulation of the brake linkage and the operation of automatic regulators, the output of the rods of the brake cylinders, which should be within the limits indicated in Table. 7.1.

Table 7.1 Exit of a rod of brake cylinders of cars, mm

Wagon type	Departure from service points	Maximum allowable at full braking in operation (without automatic control)
Truck with pads:
cast iron		75–125
40–100
compositional	50–100
40–80
Truck with separate trolley braking with pads:		–
cast iron		30-70		-
-
compositional		25-65		-
-
Passenger
with cast iron and composite pads		130–160
	80–120
size RIC with KE air distributors and cast-iron blocks		105–115
	50–70
VL-RITS on TVZ-TsNII M bogies with composite pads		25–40
	15–30

Notes. 1 In the numerator - with full service braking, in the denominator - with the first stage of braking.

2 The output of the brake cylinder rod with composite pads on passenger cars is indicated taking into account the length of the clamp (70 mm) installed on the rod.

The lever transmission must be adjusted so that the distance from the end face of the protective tube coupling to the connecting thread on the auto-adjuster screw is at least 150 mm for freight cars and 250 mm for passenger cars, and for freight cars with separate trolley braking 50 mm for auto-adjusters RTRP-300 and RTRP-675-M; the angles of inclination of the horizontal and vertical levers must ensure the normal operation of the linkage until the brake pads wear out. (With a symmetrical arrangement of the brake cylinder on the car and on cars with separate bogie braking with full service braking and new brake shoes, the horizontal lever on the side of the brake cylinder rod should be perpendicular to the axis of the brake cylinder or have an inclination from its perpendicular position up to 10 degrees away from In case of an asymmetric arrangement of the brake cylinder on cars and on cars with separate bogie braking and new brake shoes, the intermediate levers must have an inclination of at least 20 ° towards the bogies)

- the thickness of the brake pads and their location on the tread surface of the wheels. It is not allowed to leave brake pads on freight cars if they protrude from the tread surface beyond the outer edge of the wheel rim by more than 10 mm. On passenger and refrigerated cars, it is not allowed to let the blocks out from the tread surface beyond the outer edge of the wheel.

The thickness of the brake pads for passenger trains must ensure the passage from the formation point to the turnaround point and back and is established by local instructions based on experimental data.

The minimum thickness of the pads at which they are to be replaced: cast iron - 12 mm; composite with a metal back - 14 mm, with a mesh-wire frame - 10 mm (blocks with a mesh-wire frame are determined by the ear filled with friction mass).

Check the thickness of the brake pad from the outside, and in case of wedge-shaped wear - at a distance of 50 mm from the thin end.

In case of wear of the side surface of the pad on the side of the wheel flange, check the condition of the triangular or traverse, brake shoe and brake shoe suspension, eliminate the identified shortcomings, replace the shoe;

– provision of the train with the required pressing of the brake pads in accordance with the standards for brakes approved by the owner of the infrastructure (Appendix 2).

7.2 When adjusting the leverage on cars equipped with an automatic regulator, its drive is regulated on freight cars to maintain the output of the brake cylinder rod at the lower limit of the established norms (Table 7.2.).

On passenger cars at the formation points, the drive adjustment should be carried out at a charging pressure of 5.2 kgf / cm 2 and full service braking. On cars without automatic regulators, adjust the lever transmission to maintain the rod output not exceeding the average values ​​of the established norms, and on cars with automatic regulators - at the average values ​​of the established rod output norms.

7.3 The norms for the output of the rods of the brake cylinders for freight cars that are not equipped with auto-adjusters, before steep long descents, are established by local instructions.

7.4 It is forbidden to install composite blocks on cars, the linkage of which is rearranged for cast-iron blocks (i.e., the tightening rollers of the horizontal levers are located in the holes located farther from the brake cylinder), and, conversely, it is not allowed to install cast-iron blocks on cars, the linkage of which rearranged for composite pads, with the exception of wheel pairs of passenger cars with gearboxes, where cast-iron pads can be used up to a speed of 120 km/h.

Six- and eight-axle freight wagons may only be operated with composite chocks.

Table 7.2 Approximate installation dimensions of the brake linkage regulator drive

Wagon type	Type of brake pads	Size "A", mm
lever drive	rod drive
Freight 4-axle	Composite	35–50	140–200
Cast iron	40–60	130–150
Truck 8-axle	Composite	30–50	–
Truck with separate trolley braking	Composite	15–25	–
Refrigerated 5-car section built by BMZ and GDR	Composite	25–60	55–145
Cast iron	40–75	60–100
Autonomous refrigerated wagon (ARV)	Composite	–	140–200
Cast iron	–	130–150
Passenger car (wagon packaging):
From 42 to 47 tons	Composite	25–45	140–200
Cast iron	50–70	130–150
From 48 to 52 tons	Composite	25–45	120–160
Cast iron	50–70	90–135
From 53 to 65 tons	Composite	25–45	100–130
Cast iron	50–70	90–110

7.5 When inspecting the train at the station where there is a maintenance point, the wagons must have all the malfunctions of the brake equipment, and the parts or devices with defects should be replaced with serviceable ones.

If a malfunction of the brake equipment of cars is detected at stations where there is no maintenance point, it is allowed to follow this car with the brake off, provided that it is safe to move to the nearest maintenance station.

7.6 At formation points freight trains and at the points of formation and turnover of passenger trains, the inspectors of the cars are obliged to check the serviceability and operation of the hand brakes, paying attention to the ease of actuation and pressing of the blocks to the wheels.

The same check of hand brakes must be carried out by car inspectors at stations with maintenance points preceding steep long descents.

7.7 It is forbidden to put into the train wagons in which the brake equipment has at least one of the following faults:

- faulty air distributor, electric air distributor, electric circuit of the electro-pneumatic brake (in passenger train), auto mode, limit or disconnect valve, exhaust valve, brake cylinder, reservoir, working chamber;

- damage to air ducts - cracks, breaks, wear and delamination of connecting sleeves; cracks, breaks and dents in air ducts, looseness of their connections, weakening of the pipeline at the attachment points;

- malfunction of the mechanical part - traverses, triangles, levers, rods, suspensions, linkage auto-regulator, shoes; cracks or kinks in parts, spallation of shoe lugs, improper fastening of the shoe in the shoe; defective or missing safety devices and beams of auto modes, non-standard fastening, non-standard parts and cotter pins in assemblies;

– Faulty handbrake;

- weakening of fastening parts;

– unadjusted leverage;

- the thickness of the blocks is less than that specified in clause 7.1 of these Rules.

7.8 Check the operation of the pneumomechanical anti-skid and high-speed regulators on the RIC cars in the passenger mode of applying the brake with full service braking.

On each wagon, check the operation of the anti-skid regulator on each axle. To do this, rotate the inertial weight through the window in the sensor housing, and air must be released from the brake cylinder of the tested bogie through the relief valve. After the impact on the load has ceased, it should return to its original position by itself, and the brake cylinder should be filled with compressed air to the initial pressure, which is controlled by a pressure gauge on the side wall of the car body.

Press the speed control button on the side wall of the car. The pressure in the brake cylinders should increase to the set value, and after the button is pressed, the pressure in the cylinders should decrease to the original one.

After checking, turn on the brakes of the wagons to a mode corresponding to the upcoming maximum speed of the train.

7.9 Check the distance between the heads of the connecting sleeves No. 369A and the plug connectors of the inter-car electrical connection of the lighting circuit of the cars when they are connected. This distance must be at least 100 mm.

Similar information.

6.2.1. During maintenance of wagons, check:

wear and condition of components and parts, compliance with their established dimensions. Parts whose dimensions are out of tolerance or do not ensure normal operation of the brake - replace;

the correct connection of the brake line hoses, the opening of the limit valves between the cars and the disconnect valves on the supply air ducts from the line to the air distributors, as well as their condition and reliability of fastening, the condition of the electrical contacts of the heads of sleeves No. 369A, the presence of handles of the limit and disconnect valves;

the correctness of switching on the modes of the air distributors on each car, taking into account the presence of an automatic mode, including in accordance with the load and type of blocks;

the density of the brake network of the composition, which must comply with the established standards;

The effect of autobrakes on the sensitivity to braking and release.

Air distributors and electric air distributors that work unsatisfactorily - replace them with serviceable ones. At the same time, the operation of electro-pneumatic brakes should be checked from a power source with a voltage during braking of not more than 40 V (the voltage of the tail car must be at least 30 V);

The operation of the gas mask and speed regulators on passenger cars with brakes of the Western European type in accordance with separate instructions of the UZ, as well as clause 6.2.8 of this Instruction;

on cars with auto mode, correspondence of the output of the auto mode fork to the loading of the car, reliability of fastening of the contact strip, support beam on the bogie and auto mode, damper part and pressure switch on the bracket, tighten the loose bolts;

correct adjustment of the brake leverage and the operation of automatic regulators, the output of the rods of the brake cylinders, which must be within the limits indicated in table 6.1. this instruction.

The lever transmission must be adjusted so that the distance from the end of the coupling to the end of the protective tube of the auto-regulator is at least 150 mm for freight cars and 250 mm for passenger cars; the angles of inclination of the horizontal and vertical levers must ensure the normal operation of the linkage up to the limit wear of the brake pads;

The thickness of the brake pads and their location on the wheel tread. It is not allowed to leave brake pads on freight cars if they protrude from the tread surface beyond the outer edge of the wheel by more than 10 mm. On passenger and refrigerated cars, it is not allowed to let the blocks out from the tread surface beyond the outer edge of the wheel.

The thickness of the cast-iron brake pads is established by order of the head of the road on the basis of experimental data, taking into account the provision of their normal operation between maintenance points.

The thickness of cast-iron brake pads must be at least 12 mm. The minimum thickness of composite brake pads with a metal back is 14 mm, with a mesh-wire frame 10 mm (pads with a mesh-wire frame are determined by the ear filled with friction mass).

Check the thickness of the brake pad from the outside, and in case of wedge-shaped wear - at a distance of 50 mm from the thin end.

In case of obvious wear of the brake pad with inside(on the side of the wheel flange) the block must be replaced if this wear could cause damage to the shoe;

The provision of the train with the required pressing of the brake shoes in accordance with the brake standards approved by Ukrzaliznytsia (Appendix 2).

Table 6.1

Exits of rods of brake cylinders of cars

Notes:

1. In the numerator - with full service braking, in the denominator - with the first stage of braking.

2. The output of the brake cylinder rod with composite pads on passenger cars is indicated taking into account the length of the clamp (70 mm) installed on the rod.

6.2.2. When adjusting lever gears on freight and passenger cars equipped with an automatic linkage regulator, its drive is adjusted to maintain the output of the rod at the lower limit of the established standards. On passenger cars at the points of formation, adjust the drive at a charging pressure in the line of 5.2 kgf / cm 2 and full service braking. On wagons without automatic regulators, adjust the leverage to the rod output, which does not exceed the average value of the established standards.

6.2.3. The norms for the output of the rods of the brake cylinders for freight cars before steep long descents are set by the head of the road.

6.2.4. It is forbidden to install composite blocks on cars, the linkage of which is rearranged for cast-iron blocks (i.e. the tightening rollers of the horizontal levers are located in the holes located farther from the brake cylinder), and, conversely, it is not allowed to install cast-iron blocks on cars, the linkage of which is rearranged for composite pads, except for wheel pairs of passenger cars with gearboxes, where cast-iron pads can be used up to a speed of 120 km/h.

Six and eight-axle freight wagons, as well as freight wagons with containers over 27 tf, may only be operated with composite chocks.

6.2.5. When inspecting the train at a station where there is no PTO, KPTO, PPV, all malfunctions of the brake equipment must be identified for the cars, and parts or devices with defects should be replaced with serviceable ones.

6.2.6. At the points of formation of freight trains and at the points of formation and turnover of passenger trains, car inspectors are required to check the serviceability and operation of the hand brakes, paying attention to the ease of actuation and pressing of the blocks to the wheels.

The inspectors should carry out the same check of hand brakes at stations with maintenance points (PTO, KPTO, PPV) preceding steep long descents.

6.2.7. It is forbidden to put into the train wagons whose brake equipment has at least one of the following faults:

Faulty air distributors, electric air distributors, EPT electrical circuit (in a passenger train), auto mode, limit or disconnect valve, exhaust valve, brake cylinder, reservoir, working chamber;

Damage to air ducts - cracks, breaks, abrasions and delamination of connecting sleeves, cracks, breaks and dents in air ducts, lack of tightness of their connections, weakening of the pipeline in the places of their fastening;

Malfunctions of the mechanical part - traverses, triangles, levers, rods, suspensions, linkage auto-regulator, shoes, cracks or kinks in parts, splitting of the eye of the shoe, faulty fastening of the shoe to the shoe, malfunction or absence of safety parts and auto-mode beams, non-standard fastening, non-standard parts and cotter pins in knots;

Faulty hand brake;

Loose fastening of parts;

Unadjusted linkage;

The thickness of the pads is less than that specified in clause 6.2.1. this Instruction;

The absence of a handle for the end or disconnection valves.

6.2.8. Check the operation of the pneumomechanical gas mask and high-speed regulators on the RIC cars in the passenger mode, turning on the brake during full service braking.

On each car, check the operation of the gas mask regulator on each axle. To do this, rotate the inertial weight through the window in the sensor housing, and air must be released from the brake cylinder of the tested bogie through the relief valve. After the impact on the load stops, it should return to its original position, and the brake cylinder should be filled with compressed air to the initial pressure, which is controlled by a pressure gauge on the side wall of the car body.

Press the speed control button on the side wall of the car. The pressure in the brake cylinders should increase to the set value, and after the button is pressed, the pressure in the cylinders should decrease to the original one.

After checking, turn on the brakes of the wagons to a mode corresponding to the upcoming maximum speed of the train.

6.2.9. Check the distance between the heads of the connecting sleeves No. 369A and the plug connectors between the car electrical connection of the lighting circuit of the cars when they are connected. This distance must be at least 100 mm.

411. During maintenance of the brake equipment of wagons, it is necessary to check:

1) wear and condition of components and parts, compliance with their established dimensions.

Parts whose dimensions are out of tolerance or do not ensure normal operation of the brake should be replaced;

2) the correct connection of the hoses of the brake and supply lines, the opening of the end valves between the cars and the disconnect valves on the supply air ducts from the line to the air distributors, as well as their condition and reliability of fastening, the condition of the electrical contact surfaces of the heads of the sleeves No. 369A (if necessary, clean the contact surfaces with an emery cloth );

3) the correctness of switching on the modes of the air distributors on each car, taking into account the presence of an auto mode, including in accordance with the loading of the car and the type of brake pads;

4) the density of the braking network of the composition, which must comply with the established standards;

5) the effect of automatic brakes on the sensitivity to braking and release, the effect of the EPT on the integrity of the electrical circuit in the wires No. 1 and 2 of the train, the absence of a short circuit of these wires between themselves and on the car body, the voltage in the circuit of the tail car in the braking mode.

Checking the operation of the EPT should be carried out from a power source with a stabilized output voltage of 40 V, while the voltage drop in the electrical circuit of wires No. 1 and 2 in the braking mode, in terms of one car of the tested train, should be no more than 0.5 V for trains up to 20 cars inclusive and not more than 0.3 V - for compositions of greater length.

Air distributors and electric air distributors that work unsatisfactorily must be replaced with serviceable ones;

6) the operation of the anti-skid and high-speed regulators on passenger cars with brakes of the Western European type in accordance with paragraph 417 of this Instruction;

7) on cars with auto mode, correspondence of the output of the auto mode fork to the car loading, reliability of fastening of the contact strip, support beam on the bogie, auto mode, damper part and pressure switch on the bracket, (tighten loose bolts);

8) the correct regulation of the brake linkage and the operation of automatic regulators, the output of the rods of the TC, which must be within the limits specified in table 7 of this Instruction.

The lever transmission must be adjusted so that the distance from the end of the coupling to the end of the protective tube of the autoregulator is at least 150 mm for freight cars and 250 mm for passenger cars. The angles of inclination of the horizontal and vertical levers must ensure the normal operation of the linkage to the limit of wear of the brake pads;

9) the thickness of the brake pads and their location on the wheel tread.

It is not allowed to leave brake pads on freight cars if they extend beyond the outer edge from the wheel rolling surface by more than 10 mm. On passenger and refrigerated cars, the pads are not allowed to go beyond the outer edge from the wheel tread surface. The thickness of cast-iron brake pads is set on the basis of experimental data, taking into account ensuring their normal operation between PHE.

The thickness of cast-iron brake pads must be at least 12 mm. The minimum thickness of composite brake pads with a metal back is 14 mm, with a mesh-wire frame - 10 mm (the thickness of a pad with a mesh-wire frame is determined by the ear filled with friction mass).

The thickness of the brake pad must be checked from the outside, and in case of wedge-shaped wear - at a distance of 50 mm from the thin end.

In case of obvious wear of the brake pad on the inside (on the side of the wheel flange), the pad must be replaced if this wear could cause damage to the shoe.

10) the provision of the train with the required pressing of the brake shoes in accordance with the standards for brakes (Appendix 2 to this Instruction).

When inspecting the mechanical part of the brake on locomotives, the serviceability of the linkage is checked. Pay attention to the reliability of fastening and the condition of levers, rods, safety brackets, suspensions, the presence of washers and cotter pins.

Check the position and condition of the brake pads. With the brake released, the pads should move away from the wheel rolling surface at a distance of 10-15 mm along the entire length of the pad and at the same time fit snugly against the brake shoes.

The pads are replaced if they are worn to the limit thickness or have wedge-shaped wear of the ridge part, spalls and other defects. The thickness of cast-iron pads is allowed in operation at least 15 mm on train locomotives, 12 mm on tenders and 10 mm on multiple unit rolling stock and shunting locomotives.

For locomotives operating on sections with steep, long descents, where frequent and prolonged braking is applied, the thickness of the shoes must be at least 20 mm, unless another standard is established for such descents.
To replace the brake shoe on diesel locomotives, it is necessary to remove the pin, loosen the adjusting rod nuts and (Fig. a), turning the clutch a few turns, reduce the length of the rod. You can get information about modern Russian diesel locomotives on the site about the railroad.

Then, having knocked out the roller, disconnect this rod (fig. c), remove it from the fork and remove the worn block (fig. d). After installing a new block, secure it with a pin and reconnect the adjusting rod.

After replacing the brake shoe, it is necessary to check and, if necessary, adjust the distance between the vertical lever and the edge of the bogie frame bracket, as well as the amount of output of the brake cylinder rod.
Adjustment should be made by changing the length of the two rods.

First, set the size of 70410 mm from the vertical lever to the bracket using a rod between two blocks. Then, by changing the length of the rod near one shoe, the outlet of the brake cylinder rod is adjusted.

The dimension 70+1° mm is checked with the system in the locked position.
To change the gear ratio of the leverage, the brake rod roller is installed in one of the holes of the horizontal balancer, depending on the series of the locomotive and the axle load.

The output of the rod of the brake cylinders during full service braking is initially set within the following certain limits, depending on the type of rolling stock.

Electric locomotives and diesel locomotives ...... 75-125 mm
Electric trains ER2, ER9, ER10:
motor cars ...... 50-75
trailed "......... 75-100
Electric trains ER22:
motor cars........40-50
trailed "......... 75-100
Electric trains of other series and diesel trains(except trains with disc brakes):
motor cars.......75-100
trailed "......... 100-125

The maximum output of the brake cylinder rod in operation is allowed up to 150 mm.

With a larger output, the linkage must be adjusted in accordance with the given standards.
You should also check the condition and operation hand brake which should be easy to operate.

After adjusting the linkage, the brake rod couplings are fixed with nuts, and the swivel joints are lubricated.

They also check the fastenings of air ducts, brake devices and tanks on the locomotive.
Wherein Special attention pay attention to the tightness of the nozzle of the connecting sleeves on the fitting and fasten the loose nuts of the air duct system of the brake on the locomotive.