MTZ 1220.1/1220.3 Section D. Construction and Operation
D27
“Wet” Brakes and Rear Axle Differential Lock Clutch (Option)
The tractors can be equipped with multi-
ple-disk service and parking brakes oper-
ating in an oil bath.
The rear axle differential lock clutch is
mounted in the brake casing and shares
a common oil bath; therefore it also made
as a “wet” one.
The arrangement of the brakes and lock
clutch is shown in Fig. E-21.2.
Fig. D-21.2. “Wet” brakes and differential lock
1 – brake casing; 2 – friction disk; 3 – intermediate disk; 4 – pedal axle; 5 – protective boot; 6 – pressure
disk; 7 – ball; 8 – parking brake; 9 – cover; 10 – gasket; 11 – parking brake shaft; 12 – drain plug; 13 – brake
casing; 14 – gasket; 15 – O-ring; 16 – final drive pinion; 17 – lock clutch; 18 – boss; 19 – adjusting bolt; 20 –
cover; 21 – adapter; 22 – inspection and filler plug; 23 – sealing boot; 24 – O-ring.
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