2022.3-0000010 OM
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6.4.4.5 Operation 47. Check of the pneumatic system main lines hermiticity
To check the pneumatic system main lines hermiticity, perform the following:
- adjust pressure in the pneumatic system up to the value of 0.6 to 0.65 MP (ac-
cording to the air pressure gauge mounted on the gauge board) and stop the engine;
- if a double-line or combined actuator is installed, connect a manometer scaled not
less than 1 MPa to a coupling head with red cap;
- if a single-line actuator is installed, connect a manometer scaled not less than 1
MPa to a coupling head with black cap;
- check according to the manometer that the air pressure drop does not exceed 0.2
MPa during 30 min. Otherwise it is required to detect air leakage and correct the trouble.
6.4.4.6 Operation 48. Adjustment of pneumatic system brake valve actuators
Check and adjust if necessary brake valve actuators, as specified in subsection
3.9.4.2 “Check and adjustment of single-line and double-line pneumatic system brake
valve actuators”.
6.4.4.7 Operation 49. Check of all air cleaner joints and inlet chain hermiticity
To check hermiticity of all air cleaner joints and inlet chain, it is required to use the
device
-4870 GOSNITI. In case this device is not available, check hermiticity visually.
Damaged joining elements shall be replaced.
ATTENTION: TRACTOR OPERATION WITH NON-TIGHT INLET CHAIN IS FORBIDDEN.
Depressurizing of air supply circuit to the turbocharger can have negative influence
on the clogging indicator data reliability in the result of which a significant amount of un-
clean air containing high dust concentration can get into the cylinders through the turbo-
charger. Dust ingress into oil leads to increased wear of the engine cylinder-piston group.
6.4.4.8 Operation 50. Lubricating of RLL turning shaft bushings
To lubricate RLL turning shaft bushings, perform the following actions:
- clean lubricating boxes 1 and 3 (figure 6.4.32) mounted in the upper cover of rear
axle from accumulated dirt and consolidated lubricant;
- squirt lubricating boxes 1 and 3 with a lubricant until the lubricant appears from the
holes.
1, 3 – lubricating boxes; 2 – electrohydraulic unit.
Figure 6.4.32 – Lubricating of RLL turning shaft bushings
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