Water pump bypass hose-5.2L/5.9L engines. Automatic transmission oil coolers

Water pump bypass hose-5.2L/5.9L engines

DESCRIPTION

A rubber water pump bypass hose (Fig. 10) is used between the intake manifold and water pump on all 5.2L/5.9L engines.

Fig. 10 Water Pump Bypass Hose-5.2L/5.9L Engines

1 - WATER PUMP BYPASS HOSE

2 - FAN BLADE ASSEMBLY

3 - VISCOUS FAN DRIVE

4 - WATER PUMP AND PULLEY

OPERATION

When the thermostat is in the closed position the bypass hose allows the water pump to circulate the engine coolant through the cylinder block while at the same time preventing the coolant from flowing through the radiator, this allows the coolant to heat up quicker thus bring the engine to operating temperature faster.

Automatic transmission oil coolers

DESCRIPTION

CAUTION: On in-radiator type oil coolers, if transmission oil cooler is leaking, engine coolant may enter cooler, or transmission oil may enter engine cooling system. Both engine cooling system and transmission oil circuit should be drained, flushed, and inspected.

There are two types of transmission oil coolers used. One type of cooler is the in-radiator type or oil to coolant type. This type oil cooler is not serviceable.

The second type used is a remote type auxiliary oil cooler or oil to air cooler. The oil to air type cooler is located in front of the radiator, and is serviceable.

Fig. 11 Oil Flow to Cooler-Top View (Typical)

1 - TRANSMISSION OIL COOLER

2 - AUTOMATIC TRANSMISSION

3 - RETURN LINE

4 - PRESSURE LINE

Fig. 12 Auxiliary Transmission Oil Cooler-Typical

1 - RADIATOR

2 - A/C CONDENSER (IF EQUIPPED)

3 - TRANSMISSION AUXILIARY OIL COOLER