1-2-3-4-5-6 Clutch Piston Housing Inspection
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- If the PTO gear is damaged, replace the 1-2-3-4, 4-5-6 clutch housing. If the tone wheel is damaged, replace the tone wheel.
- Measure the inside diameter (ID) of the 1-2-3-4, 4-5-6 clutch seal bore in the 1-2-3-4, 4-5-6 clutch housing (1) at dimension A.
Replace the 1-2-3-4, 4-5-6 clutch housing (1) if the measurement exceeds the specification.
Specification: The 1-2-3-4, 4-5-6 clutch seal bore maximum ID is 74.05 mm (2.9154 in)
- Inspect the bushing (2) inside the front of the 1-2-3-4, 4-5-6 clutch housing (1) for damage.
- Measure the ID of the bushing at dimension B.
Replace the bushing if the measurement exceeds the specification.
Specification: The 1-2-3-4, 4-5-6 clutch housing bushing maximum ID is 78.17 mm (3.0776 in).
IMPORTANT:
The power take-off (PTO) gears are permanently staked to the 1-2-3-4, 4-5-6 clutch housing and are not serviceable. Turbine tone wheels are serviceable.
Inspect the turbine tone wheel or PTO gear (3) for damage. Make sure a tone wheel is not dented or out-of-round.
Inspect the turbine tone wheel or PTO gear (3) for damage. Make sure a tone wheel is not dented or out-of-round.
IMPORTANT:
Replace the 1-2-3-4, 4-5-6 clutch housing bushing if the bushing is damaged or the specifications are not met.