Water Pump Installation (LF4)

Special Tools 

EN-46104  Water Pump Pulley Holding Tool

For equivalent regional tools, refer to Special Tools (LGX)Special Tools (LF4) .

Fig 1: View Of Water Pump Bolts
Courtesy of GENERAL MOTORS COMPANY
1. Ensure that the engine front cover and water pump are clear of old gasket material.
2. Ensure that the water pump mounting bolt holes in the front cover are completely clean and dry.
3. Place a NEW water pump gasket on the water pump.
4. Place the water pump in position on the front cover.
CAUTION:

This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

5. Install the NEW water pump bolts finger tight.
Fig 2: Water Pump Bolts & Tightening Sequence
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

Refer to Fastener Caution .

6. Tighten the NEW water pump bolts.
   1. Tighten the bolts a first pass in the sequence shown to 10 N.m (89 lb in).
   2. Tighten the bolts a second pass in the sequence shown to 10 N.m (89 lb in).
   3. Tighten the bolts a final pass in the sequence shown an additional 45 degrees.
Fig 3: View Of Water Pump Pulley Bolts
Courtesy of GENERAL MOTORS COMPANY
7. Install the water pump pulley.
8. Loosely install the water pump pulley bolts.
Fig 4: Water Pump Holding Tool
Courtesy of GENERAL MOTORS COMPANY
9. Install the EN-46104  tool (1) onto the water pump pulley and tighten the water pump pulley bolts to 10 N.m (89 lb in).