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6.4.4 Maintenance services in every 500 hours of operation
6.4.4.1 General guidelines
Complete the abovementioned tasks, and the tasks, listed in the present subclause
6.4.4 also.
6.4.4.2 Task 37. Cleaning of filter cartridge of air pressure regulating filter in the
pneumatic system.
To clean filter cartridge of air pressure regulating filter 3 (Figure 6.4.31) in the
pneumatic system, perform the following actions:
- unscrew bolts 1 and remove cap 2;
- withdraw filter cartridge, rinse it with cleaning solution and blow it off with a com-
pressed air;
- insert the filter cartridge and than mount the cap in its place.
1 – bolt, 2 – cap; 3 – air pressure regulator in the pneumatic system.
Figure 6.4.31 – Cleaning of filter cartridge of air pressure regulating filter
6.4.4.3 Task 38. Adjustment of service brake control
Check and adjust when necessary service brake control, as indicated in subsec-
tions 3.9.7 “Adjustment of brake controls at forward motion” and 3.9.8 “Adjustment of
brake controls on reverse”.
6.4.4.4 Task 39. Adjustment of parking brake control
Check and adjust if necessary parking brake control, as specified in subsection
3.9.9 “Adjustment of parking brake actuator”.
6.4.4.5 Task 40. Check of the pneumatic system line proofness
To check the pneumatic system line proofness, perform the following:
- adjust pressure in the pneumatic system up to the value of 0.6 to 0.65 MPа (ac-
cording to the air pressure gauge mounted on the gauge board) and stop the engine;
- connect a manometer scaled not less than 1 MPa to a coupling head with red cap.
- check according to the manometer that the air pressure drop does not exceed 0.2
MPa during 30 min. Otherwise detect air leakage and correct the trouble.
6.4.4.6 Task 41. Adjustment of pneumatic system brake valve actuator
Check and adjust if necessary brake valve actuators, as specified in subsection
3.10.2 “Check and adjustment of pneumatic system brake valve actuators”.
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