Clutch Removal and Instalation, Servicing Instructions
by Miller | January 15, 2009 | In Clutch | No Comments
CLUTCH SERVICING INSTRUCTIONS
This also frees the driven plate.
To install clutch on flywheel, use as a guide flywheel locating dowels.
Prior to tightening down clutch mounting screws, align driven plate.
(pic. installing the clutch on flywheel using pilot to center the driven plate)
Pilot Bushing.
Whenever clutch unit is disassembled, it is essential to check that pilot bush on crankshaft for,
- clutch shaft rear support
- is not damaged or excessively worn.
Clutch shaft tang on bush end must also be found in good condition.
Max. clearance between clutch shaft tang and bush must not be greater than .0059″ (0,15 mm), otherwise pilot bush must be replaced.
(pic. clutch assembly installed on engine)
Disassembly.
Unhook the withdrawal lever carrier ring springs and take out the ring.
Unscrew the withdrawal lever fixing nuts on bolts and remove the levers and washers; slacken gradually the three T-handles to relieve pressure of clutch springs.
Next, take off clutch cover, springs and lever mounting bolts.
(Pic.location dowels on flywheel for clutch centering)
Pressure Springs.
When servicing the clutch, always check springs for perfect efficiency. In case springs are excessively weak - i. e., the spring length of .9646 (24,5 mm), corresponding to the actual assembly value, is obtained with a load of less than 43 lbs (19,5 kg) - replace the springs.
(Pic. pressure spring specifications)
Withdrawal Lever Carrier Ring Retaining Springs.
The length of closed springs, under rated clutch load, is .7677′ (19,5 mm), while the length of expanded springs (under a load of 4.85 .44 lbs -2,2 ± 0,2 kg) should be 1.1811″ (30 mm). If an excessive weakening of springs is noticed, replace the springs.
(Pic. withdrawal lever carrier ring retaining spring specifications)
Withdrawal Levers.
Check the withdrawal levers and their bolts for excessive wear, and replace [More]
