
58
4.2 Transmission
Coupling mechanism and gearbox construction description and operation and mainte-
nance instructions are given in the Operation Manual of Yaroslavl Engine Plant.
4.2.1 Clutch Control with Air-Over Hydraulic Booster
4.2.1.1 Air-Over Hydraulic Booster for Conventional Cab Ural Trucks
Master cylinder 7 (see figure 43) is installed in the engine compartment and is fixed by
the bracket to the cab front plate.
When pressing clutch pedal, fluid pressure from the master cylinder is transferred
through the tube 16 to the air-over hydraulic booster. Fluid in the air-over hydraulic booster puts
pressure on the rod, opening the pneumatic system valve.
Pneumatic part consists of 10 l tank 17 installed inside the left girder, check valve 18,
pipelines. Feeding is done from a separate pneumatic system circuit.
1-reserve tank; 2-tank lid; 3-bolt; 4-nut; 5,14-brackets; 6-cylinder stop; 7-clutch master cylinder; 8-foot
mechanism; 9, 26-springs; 10-brake pedal; 11-clutch pedal stop; 12,15-brake pedal links; 13-brake valve
control lever; 16-hydraulic gear pipeline; 17-non-brake consumer tank; 18-check valve; 19,22-pipeline; 20-
oil separator with 4-circuit valve; 21-plug; 23-hydraulic fitting; 24-tee; 25-clutch pedal; 27-chute; full pe-
dal motion L=185-190mm
Figure 43 - Clutch Release Linkage
Summary of Contents for 4320M
Page 1: ...URAL 4320М TRUCK and its Modifications ...
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Page 159: ...156 Figure 123 Engine Electronic Control Unit Wiring Scheme ...
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Page 177: ...Figure 140 Installation of left and right side safety devices 171 ...
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