Page 396
REPAIR INSTRUCTIONS, PART 2
474
Figure 474 — Thermostat Housing Hose Connections
8. Reinstall the EGR mixer tube.
9. Refill the surge tank with the coolant
removed at disassembly.
Water Pump Housing Assembly
Removal and Installation
[215 SW]
The preliminary steps for replacing the water
pump housing will vary depending on the chassis
configuration. As such, these steps are general in
nature. Begin the operation by disconnecting the
battery and draining coolant from the engine.
Then, remove the hood and fender assembly,
charge air cooler and radiator.
For problems with the water pump, DO NOT
replace the entire water pump and housing
assembly. Replace only the water pump cartridge
if the problem is in the impeller unit.
PUMP REMOVAL
Refer to Figure 477 as required to identify parts
referenced in the steps below.
1. Remove the drive belts, fan-speed sensor
lead and fan drive assembly from the water
pump housing.
2. Remove the seven mounting capscrews and
remove the pump impeller assembly from
the water pump housing (Figure 475).
Discard the O-ring.
475
Figure 475 — Water Pump Cartridge
1. Bypass Hose
2. Radiator Hose Port
3. Surge Tank Port
1. Water Pump Cartridge 2. Water Pump Housing
5-111.bk Page 396 Monday, July 10, 2006 2:26 PM
To Next Page
Loading...
