Belarus 1221.2, Руководство оператора

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BELARUS-1221.2/1221 В .2/1221.3 Description and operation
99
Differential Lock Clutch and Three-Disk Service Brake
The multiple-disk hydraulically controlled
differential lock clutch (1) (Fig. E-17) is lo-
cated in casing (8) which is bolted to the
rear axle housing through the housing of
the left-hand three-disk brake and the
bearing body. The three-disk dry service
brake housing (17) contains the brake
disks (16), pressure disks (13), intermedi-
ate disk (11), balls (15) and brake release
springs (not shown).
Fig. E-17. Differential lock clutch:
1 – lock clutch; 2 – adapter; 3 – diaphragm cover; 4 – pressure disk; 5 – diaphragm; 6 – release disk; 7 –
intermediate disk; 8 – housing; 9 – clutch body; 10 – locking; 11 – brake intermediate disk; 12 – ball; 13 –
pressure disk; 14 – differential spider; 15 – lock-up shaft; 16 – brake disk; 17 – left-hand three-disk brake
housing.
The clutch consists of lock-up shaft (15)
which is spline-coupled with the differen-
tial spider (14), body (9), pressure disk (4),
release disk (6), diaphragm (5), cover (3),
adapter (2) and disks (10) spline-mounted
on the left-hand wheel transmission pin-
ion.
Under the action of oil delivered under
pressure to the rod-end chamber “A” from
the ADL control hydraulic system, the dia-
phragm (5) in conjunction with the
pressure disk (4) moves and presses
disks (10) against the bearing surfaces of
the clutch body (9), intermediate disk (7)
and release disk (6) so that the differential
(the differential spider with the left-hand
half-axle gear) gets locked. When the front
wheels turn to a certain degree from the
straight-line motion, the rod-end chamber
“A” opens to the discharge line, and the
differential unlocks.