ZIL-5301 Clutch Release Drive
ZIL vehicles and buses use a hydraulic clutch drive with a pneumatic booster.
As a rule, the pneumatic-hydraulic booster (PGU) is disassembled for repair in the following cases:
A two-section brake valve is used to control the actuators of the vehicle's service brake system. The two-section brake valve is mounted on the front shield of the cabin.
Assembling diesel engine D-245
Installing cylinder liners
Cylinder liners and seating surfaces of the cylinder block under the liners should be wiped with a cloth and blown with compressed air.