65. Coolant Crossover Pipe Cleaning and Inspection

Coolant Crossover Pipe Cleaning and Inspection

Warning: Refer to Cleaning Solvent Warning (Cleaning Solvent Warning).
1. Clean the coolant crossover pipe with solvent.
Warning: Refer to Safety Glasses Warning (Safety Glasses Warning).
2. Dry the coolant crossover pipe with compressed air.




3. Inspect the front of the coolant crossover pipe for the following:

* Damage to the coolant fill adapter sealing surface (1)
* Damage or restrictions to the radiator hose connection (2)
* Damage or restrictions to the thermal bypass hose connection (3)
* Damage, blockage, or excessive corrosion to the engine coolant passages
* Damage or restrictions to any fastener threads
* Damage or restrictions to any mounting holes




4. Inspect the rear of the coolant crossover pipe for the following:

* Damage to the heater inlet/outlet sealing surface (1)
* Damage to the coolant crossover pipe-to-cylinder head sealing surfaces (2)
* Damage, blockage, or excessive corrosion to the engine coolant passages
* Damage or restrictions to any fastener threads
* Damage or restrictions to any mounting holes

5. Repair or replace the coolant crossover pipe as necessary.