784C, 785C and 785C HAA Off-Highway Truck/Tractors Power Train Caterpillar

Illustration 1	g00296451

When the temperature is rising, this temperature will close the relief and temperature control valve. ... 43.3°C (110°F)

When the temperature is decreasing, this temperature will open the relief and temperature control valve. ... 48.9°C (120°F)

Pressure setting for the relief and temperature control valve ... 620 kPa (90 psi)

(A) Port for the pressure sensor

(1) 1B-9704 Spring

Length under test force ... 61.11 mm (2.406 inch)

Test force ... 40.0 to 48.9 N (9 to 11 lb)

Free length after test ... 88.9 mm (3.50 inch)

Outside diameter ... 22.23 mm (0.875 inch)

(2) 3P-0774 Gasket

Note: Do not use the gasket that is provided by the supplier.

Flow Test

Use SAE 10W oil at 66°C (150°F) for the test.

1. Provide flow to port (C). The input flow rate for this test is 95 L/min (25 US gpm).

2. The output flow at port (D) should be 30 ± 5 L/min (8 ± 1 US gpm). The output flow at port (E) should be 65 ± 5 L/min (17 ± 1 US gpm).