Service Manual, General Motors 4.3L Engine (TP ... - Kohler Power

6-94 Marine/Industrial 4.3L Engine
1.4. Slide the J 38834-2 onto the J 38834-1 and into the
balance shaft bore of the engine block.
1.5. Install the J 38834 bearing, washer and nut onto the
J 38834-1.
1.6. Using a wrench, secure the J 38834-1 and then rotate
the J 38834 nut clockwise until the balance shaft rear
bearing is removed from the engine block.
1.7. Remove the J 26941 from the balance shaft rear
bearing.
2. Discard the balance shaft rear bearing.
188106
Balance Shaft Clean and Inspect
Caution: Refer to Safety Glasses Caution in Cautions and
Notices.
Important: The balance shaft and the balance shaft front bearing
are serviced only as an assembly. Do not remove the balance
shaft front bearing from the balance shaft.
1. Clean the following components in cleaning solvent:
• The balance shaft (1)
• The balance shaft retainer (2)
• The balance shaft rear bearing
• The balance shaft driven gear (4)
• The balance shaft drive gear
2. Dry the following components with compressed air:
• The balance shaft (1)
• The balance shaft retainer (2)
• The balance shaft rear bearing
• The balance shaft driven gear (4)
• The balance shaft drive gear
3. Inspect the balance shaft bearings for the following:
• Front ball bearing for damage or wear
• Front ball bearing for smoothness of operation
• Rear sleeve bearing for wear, scoring or other damage
4. Inspect the balance shaft (1) for the following:
• Wear or scoring on the rear bearing journal
• Damaged bolt hole threads
• Damaged to the balance shaft driven gear locator pin
5. Inspect the balance shaft retainer (2) for wear or damage.
6. Inspect the balance shaft retainer bolts (3) for damaged
threads.
7. Inspect the driven gear (4) for the following:
• Excessive wear or damage
• Nicks, burrs or scoring
2000 Marine/Industrial