993K Wheel Loader Power Train Caterpillar

Illustration 1	g01441372

Displacement per revolution ... 74 cc (4.5 in³)

Pressure cutoff ... 21000 ± 350 kPa (3050 ± 50 psi)

Margin pressure ... 2100 ± 100 kPa (305 ± 15 psi)

The pump rotates in a counterclockwise direction when the pump is viewed from the shaft end.

(1) Torque for four bolts ... 12 N·m (106 lb in)

(2) Torque for the plug ... 15 N·m (133 lb in)

Illustration 2	g01441370
View A-A

(3) 6E-4000 Spacer

(C) 0.025 ± 0.025 mm (0.001 ± 0.001 inch)

Grind spacer (3) in order to achieve dimension (C). The faces of the spacer should be parallel within 0.05 mm (0.002 inch).

Illustration 3	g01441371
View B-B

(4) Torque for the cylinder ... 130 N·m (95 lb ft)

(5) Torque for two plugs ... 30 N·m (22 lb ft)

(6) Torque for the piston guide ... 130 N·m (95 lb ft)

135-6616 Pump Control Valve

Illustration 4	g01441373

(7) Apply 4C-4030 Thread Lock Compound to the threads of two plugs prior to installation.

(8) 6E-3275 Spring

Length under test force ... 15.1 mm (0.59 inch)

Test force ... 40.2 ± 2.8 N (9.0 ± 0.6 lb)

Free length after test ... 20.5 mm (0.81 inch)

Outside diameter ... 10.7 mm (0.42 inch)

(9) 6E-3274 Spring

Length under test force ... 14.4 mm (0.57 inch)

Test force ... 81.7 ± 14.5 N (18 ± 3 lb)

Free length after test ... 15.9 mm (0.63 inch)

Outside diameter ... 7.7 mm (0.30 inch)

(10) Torque for two nuts ... 21 N·m (15 lb ft)

(11) Torque for two nuts ... 21 N·m (15 lb ft)

(12) 6E-3276 Spring

Length under test force ... 32.6 mm (1.28 inch)

Test force ... 462 ± 71 N (105 ± 16 lb)

Free length after test ... 35.6 mm (1.40 inch)

Outside diameter ... 19.2 mm (0.76 inch)

(13) 193-1036 Spring

Free length ... 31.1 mm (1.22 inch)

Outside diameter ... 8.3 mm (0.33 inch)