51
A grease cup for the clutch release bearing indentifies visually
the clutch type. The clutch with the pressure springs and release
levers is provided with the grease cup to be found on the right-
hand side of the engine (in motion). The clutch with the central
diaphragm pressure spring is not provided with a grease cup.
Maintenance of the clutch consists in cleaning of dirt,
tightening the bolt joints, adjusting and lubricating the clutch
release bearing.
The clutch release bearing with the central diaphragm spring
needs no grease.
Periodically drain condensate from the clutch housing
unscrewing the plug 22 (Fig. 39).
Maintenance of the clutch control linkage amounts to
adjustment of the pedal free travel, to periodical checks on the
level of fluid in the reservoir of the clutch hydraulic system
master cylinder and to bleeding the hydraulic system if re-
quired*.
The level of fluid should be 15-20 mm below the upper edge
of the reservoir.
Perform adjustment of the clutch release pedal by changing
the length of the master cylinder pushrod 2 (Fig. 40).
Perform adjustment of the pedal free travel (35-55 mm) by
changing the length of the slave cylinder 9 pushrod 12.
The clutch with the central diaphragm spring needs no
adjustment of free travel. The free travel (5-30 mm) is main-
tained by the clutch design.
Maintenance of the Gearbox
Maintenance of the transmission consists in checking the
oil level (Fig. 41), in changing the oil at established intervals
specified in Lubrication Table and in periodically checking the
joints for proper fastening and in adjusting the control linkage.
For adjusting the control linkage, change the length of
horizontal rods 8, 11 (Fig. 42) and vertical rods 5, 14.
Prior to adjustment, set the shift lever 9 in the neutral position
and the selector lever 10 in the position III-IV until it rests
*All the operations of bleeding the clutch hydraulic system are similar to
operations of bleeding the hydraulic brake system (refer to section "Mainte-
nance of the Service Brakes")
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