C7 Marine Engine Caterpillar

Illustration 1	g01224288

(1) Unit Injector Hydraulic Pump

(2) Tighten the bolt that holds the gear to the following torque. ... 108.8 ± 13.6 N·m (80 ± 10 lb ft)

(3) The high pressure relief valve is set to the following pressure. ... 32.2 ± 1.7 MPa (4670 ± 247 psi)

Illustration 2	g01224291

(4) Tighten the fitting for the oil inlet port to the following torque. ... 71.5 ± 7.5 N·m (52.7 ± 5.5 lb ft)

(5) Tighten the plug to the following torque. ... 6.0 ± 0.7 N·m (53 ± 6 lb in)

(6) Tighten the plug to the following torque. ... 10.75 ± 1.25 N·m (95 ± 11 lb in)

(7) Tighten the valve to the following torque. ... 50 ± 5 N·m (37 ± 4 lb ft)

(8) Tighten the fitting for the oil outlet port to the following torque. ... 23 ± 2 N·m (17.0 ± 1.5 lb ft)

(9) Orient the open face of the nut away from the pump. Tighten the nut to the following torque. ... 5.5 ± 1.5 N·m (49 ± 13 lb in)

Illustration 3	g01224294

(10) Tighten the fitting for the fuel inlet port to the following torque. ... 17.5 ± 2 N·m (13 ± 1.5 lb ft)

(11) Tighten the fitting for the fuel outlet port to the following torque. ... 17.5 ± 2.0 N·m (12.9 ± 1.5 lb ft)

(12) Tighten the two bolts to the following torque. ... 24.5 ± 2.5 N·m (18.1 ± 1.9 lb ft)

Low speed pump performance.

Engine RPM ... 242

Minimum oil flow ... 1.09 L/min (0.288 US gpm)

Fuel pressure ... 240 kPa (35 psi)

High speed pump performance.

Engine RPM ... 3036

Minimum oil flow ... 19.0 L/min (5.019 US gpm)

Fuel pressure ... 450 kPa (64 psi)