Coolant Line/Hose: Service and Repair

Engine Coolant Crossover Pipe Replacement (LZ4: 6 Cyl, 3.5L, SFI, V6, Offset Bore)

Removal Procedure





1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement (Service and Repair).
2. Remove the generator. Refer to Generator Replacement (LZ4) (Generator Replacement)Generator Replacement (LY7) (Generator Replacement).
3. Remove the drive belt idler pulleys. Refer to Drive Belt Idler Pulley Replacement (Service and Repair).
4. Remove the power steering pump. Refer to Power Steering Pump Replacement (LZ4) (Service and Repair)Power Steering Pump Replacement (LY7) (Service and Repair).
5. Reposition the radiator surge tank inlet hose clamp (1) at the surge tank inlet pipe.
6. Remove the radiator surge tank inlet hose from the inlet pipe. Position the hose out of the way.




7. Remove the radiator surge tank pipe bolts (2).
8. Remove the radiator surge tank pipe from the crossover pipe.




9. Reposition the radiator inlet hose clamp at the crossover pipe.
10. Remove the radiator inlet hose from the crossover pipe.




11. Reposition the thermal bypass hose clamp at the crossover pipe.
12. Remove the thermal bypass hose from the crossover pipe.




13. Remove the coolant crossover pipe bolts (1-4).
14. Remove the coolant crossover pipe.



Installation Procedure





1. Position the coolant crossover pipe to the cylinder heads.
Notice: Refer to Fastener Notice (Fastener Notice).


2. Install the coolant crossover pipe bolts (1-4).

Tighten the bolts to 50 N.m (37 lb ft).





3. Install the thermal bypass hose to the crossover pipe.
4. Position the thermal bypass hose clamp at the crossover pipe.




5. Install the radiator inlet hose to the crossover pipe.
6. Position the radiator inlet hose clamp at the crossover pipe.




7. Install the radiator surge tank pipe to the crossover pipe.
8. Install the radiator surge tank pipe bolts (2).

Tighten the bolts to 10 N.m (89 lb in).





9. Install the radiator surge tank inlet hose to the inlet pipe.
10. Position the radiator surge tank inlet hose clamp (1) at the surge tank inlet pipe.
11. Install the power steering pump. Refer to Power Steering Pump Replacement (LZ4) (Service and Repair)Power Steering Pump Replacement (LY7) (Service and Repair).
12. Install the drive belt idler pulleys. Refer to Drive Belt Idler Pulley Replacement (Service and Repair).
13. Install the generator. Refer to Generator Replacement (LZ4) (Generator Replacement)Generator Replacement (LY7) (Generator Replacement).
14. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement (Service and Repair).