Service manual

Water Pump Cleaning and Inspection
SIE-ID = 194965
Caution: Refer to Safety Glasses Caution in
Cautions and Notices.
1. Remove the old gasket material from the water
pump sealing surfaces.
2. Clean all the dirt and any debris from the
water pump.
3. Inspect the water pump for the following:
• Leakage or damage to the housing cover
or gasket (1)
• Excessive scratches or gouging to the gasket
sealing surfaces (2)
• Leakage from the water pump vent hole (3)
A stain around the vent hole is acceptable.
If leakage occurred (dripping) with the engine
operating and the cooling system pressurized,
then replace the water pump.
• Damaged bolt hole threads (4)
• Excessive side-to-side movement of the water
pump shaft (5)
• Leakage around the water inlet pipe (6)
• Leakage around the heater hose pipe (7)
• Restrictions within the internal coolant
passages
Thread Repair
SIE-ID = 43119
General purpose thread repair kits are available
commercially.
Caution: Refer to Safety Glasses Caution in
Cautions and Notices.
Important: Refer to the thread repair kit
manufacturer’s instructions regarding the size of the
drill and which tap to use.
Always avoid any buildup of chips. Back out the tap
every few turns and remove the chips.
1. Determine the size, the pitch, and the depth of the
damaged thread.
2. Adjust the stop collars on the cutting tool as
needed. Tap the stop collars to the required depth.
3. Drill out the damaged thread.
4. Remove the chips.
5. Apply clean engine oil to the top thread.
6. Use the tap in order to cut new thread.
7. Clean the thread.
480571
4962
Engine Engine Mechanical - 5.0L and 5.7L 6-101
2002 - Unit Repair (May 25, 2001)