Reliant Kitten Estate, Руководство по ремонту

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Page 58
Section H
Contents
Description
Routine maintenance
Operation 1
Clutch adjustment
Operation 2
Clutch assembly - removal
Operation 3
Clutch operating fork, lever & thrust pad
Operation 4
Pedal assembly - removal & dismantling
Operation 5
Pedal assembly - re-assembly & replacement
Operation 6
Clutch cable - removal & replacement
Description
The clutch assembly comprises a spring pressure plate assembly and a
single dry 158.75 mm (6.25 in) diameter clutch plate.
The clutch pedal operates a cable linked to the clutch operating arm
and a trunnion which acts as an abutment for the cable adjuster.
Routine adjustment
Check and adjust if necessary every 6,000 miles (10,000 km)
Operation 1 Clutch adjustment
The clutch cable is adjusted as follows:
1. Pull back on the clutch cable inner, releasing the adjuster
nut on the threaded portion of the cable from the trunnion located in
the clutch operating arm. (
Figure 1
)
2. Rotate the adjuster nut along the threaded end of the cable
and relocate on the trunnion.
3. The cable is correctly adjusted when the clutch and brake
pedal pads are level and there is approximately 1.5 mm (1/16 in) free
movement of the clutch operating arm at the trunnion.
Operation 2 The clutch assembly - removal
The clutch is located on the flywheel by two dowels and is retained by
six set screws and lock washers. Before dismantling, mark all major
components so they can be re-assembled in the same relative
positions, thus preserving balance and adjustment.
To remove
( Figure 2 )
1. Remove the gearbox (see Section G).
2. Unscrew the six set screws and lock washers and remove
the clutch assembly from the flywheel.
3. Check that the lining material, on both sides of the driven
plate, are clean and free from oil. The disc should also be checked for
excessive wear and signs of overheating. If the linings are worn down
to the rivet heads or if any of the above conditions are apparent, the
disc must be renewed.
Check the condition of the pressure plate and the thrust pad surfaces.
Should any sign of scarring or overheating be present, renew the
assembly.
Clutch
Figure 1 Clutch adjuster
1. Adjuster nut
2. Trunnion
3. Operating arm.
Clutch fault diagnosis
A clutch lining, in service, will develop a "polished" surface. This
should not be confused with a "glazed" surface which will be due to a
film deposit, a condition that alters the frictional value of the lining.
When a "polished" surface is in perfect condition it is a medium brown
colour. If for any reason oil should gain access to the clutch and come
in to contact with the linings, small quantities will burn off due to heat
generated by the slip which occurs under normal starting conditions.
This has the effect of darkening the surface of the linings. However, as
long as the "polish" on the linings remains such that the grain of
material can be clearly distinguished, it has very little affect on clutch
performance.
Increased quantities of oil or grease, however, can give rise to harmful
conditions. One of two conditions may arise, or a combination of
both.
(a)
The oil may burn off and leave a carbon deposit having a
high "glaze". causing clutch slip. In general this condition ides the
grain of the friction material.
(b)
The oil may only burn partially. This leaves a resinous
deposit resulting in a fierce clutch. It may even cause a spinning clutch
due to the linings adhering to the flywheel and pressure plate
surfaces.
A clutch that has been misused by the driver, "riding" the clutch or
using the clutch pedal as a footrest, is often easily diagnosed by
advanced release bearing wear coupled with marked "bluing" of the
bearing plate.
To replace
1. Using tool No. RT 7485 as a centraliser, or a primary shaft
from a gearbox, position the clutch disc and pressure plate assembly
on the flywheel, securing evenly with the six set screws and lock
washers to a torque of 1.66 to 2.07 kg/m (12 to 15 lb/ft) (
Figure 3 )