Water Crossover Cleaning and Inspection C/K/G/C3500HD

1. Clean the coolant crossover (7) and water outlet (1) in solvent.

Caution: Wear safety glasses in order to avoid eye damage.

2. Dry the coolant crossover and water outlet with compressed air.

1. Inspect the coolant crossover (7) for the following:

•	Corrosion or damage to the gasket sealing surfaces (5)

•	Corrosion or damage to the bypass hose fitting (6)

•	Corrosion or damage to the heater hose fitting (8)

•	Corrosion or damage to the threads for the water outlet (4)

2. Inspect the water outlet (1) for corrosion or damage.
3. Repair or replace the coolant crossover and/or water outlet as necessary.

Water Crossover Cleaning and Inspection Medium Duty

1. Clean the coolant crossover (3) and water outlet (1) in solvent.

Caution: Wear safety glasses in order to avoid eye damage.

2. Dry the coolant crossover and water outlet with compressed air.

1. Inspect the coolant crossover (3) for the following:

•	Corrosion or damage to the gasket sealing surfaces (4)

•	Corrosion or damage to the bypass hose fitting (5)

•	Corrosion or damage to the threads for the water outlet (2)

2. Inspect the water outlet (1) for corrosion or damage.
3. Repair or replace the coolant crossover and/or water outlet as necessary.