Input Shaft Spring Down Test

To test for proper input shaft spin down, perform the following test:
1. Set parking brake and place vehicle in neutral and allow the vehicle to idle.
2. Gently move the shifter toward reverse gate and continue to move shifter until a light/grind rattle can be heard.
3. Once the grind/rattle noise is observed, depress clutch pedal and note the time required for the grind/rattle noise to cease.
4. Normal spin down times (time required until grinding noise ceases) are approximately three seconds.
4. If the noise ceases (shaft stops spinning) within three seconds, proceed to the next step. If the noise does not cease within three seconds inspect clutch fork travel and clutch pedal travel.

Pedal Travel Measurement:
Measure clutch pedal travel according to the "Clutch Master and Actuator Cylinder Assembly Diagnosis". Pedal travel should be between 135 mm - 156 mm (5.3 - 6.2 inch). If pedal travel is not between 135 mm and 156 mm, check for:
a. Carpet or floor mat under pedal.
b. Faulty bushing/damaged pedal.

Fork Travel Measurement:
Measure fork travel according to the "Clutch Master and Actuator Cylinder Assembly Diagnosis". If fork travel is less than 11.18 mm (0.44 inch) check for the following:
a. Fluid leak in hydraulic system.
b. Damage to front of dash.
c. Damaged master/slave cylinder.
d. Air in system.
e. Master/slave cylinder improperly installed.

IMPORTANT: Steps a, b and d require master/slave cylinder replacement.

If pedal travel and fork travel are o.k. and clutch hydraulics arc functioning properly, check for:
a. Bent fork.
b. Damaged pressure plate and/or clutch disc.
5. If spin down times are approximately three seconds, the clutch disc/pressure plate and clutch hydraulic are not the cause of hard into gear or grind into gear complaint. Proceed to the next step.
6. Attempt to verify the concern with the engine off. If the complaint is not observed with the engine off, proceed to the next step. If the complaint is observed with the engine off, inspect for the following:
a. Shift cable retainer clip loose/missing.
b. Damaged/kinked shift cable.
c. Damaged shift tower components.
d. Shifter assembly damaged/broken.
7. If the complaint is not observed with the engine off, inspect for the following:
a. Damaged blocker ring, blocker ring teeth rounded off.
b. Burnt blocker ring/blocker ring friction material debonded.
c. Debonded blocker ring friction material.
d. Oversized blocker ring (can check with feeler gage for clearance between blocker and gear).
e. Missing circular spring.
f. Worn damaged shift fork pad/bushing.
g. Synchronizer sleeve tooth points damaged.