2000/11/27 Caterpillar

Load Haul Dump (LHD):

R1700G (PIN: 8XZ)

The information on pages 11 and 12 for the main relief valve and the line relief valve has been revised. The revised information follows:

Illustration 1	g00756544
View of the Main Relief Valve

(1) 8H-3532 Spring

Length under test force ... 25.4 mm (1.0000 inch)

Test force ... 95.0 ± 7.5 N (21.50 ± 1.70 lb)

Free length after test ... 42.06 mm (1.656 inch)

Outside diameter ... 11.91 mm (0.469 inch)

(2) 142-4286 Spring

Length under test force ... 39.4 mm (1.55 inch)

Test force ... 302 ± 24 N (68 ± 5 lb)

Free length after test ... 44.5 mm (1.75 inch)

Outside diameter ... 11.68 mm (0.460 inch)

(3) Torque for the cap ... 110 ± 10 N·m (80 ± 7 lb ft)

(4) Torque for the locknut ... 50 ± 7 N·m (37 ± 5 lb ft)

Relief pressure setting ... 22410 ± 170 kPa (3250 ± 25 psi)

Flow rate ... 314 ± 4 L/min (83 ± 1 US gpm)

Illustration 2	g00756545
View of the Line Relief Valve

(1) Torque for the relief valve ... 65 ± 5 N·m (48 ± 4 lb ft)

(2) Torque for the nut ... 25 ± 7 N·m (18 ± 5 lb ft)

(3) 4T-2741 Spring

Length under test force ... 58.7 mm (2.31 inch)

Test force ... 240 ± 20 N (55 ± 4 lb)

Free length after test ... 61 mm (2.4 inch)

Outside diameter ... 15.75 mm (0.620 inch)

(4) Torque for the cap ... 12 ± 4 N·m (9 ± 3 lb ft)

Oil flow rate at 49° ± 3°C (120° ± 5°F) ... 38 ± 4 L/min (10 ± 1 US gpm)

Pressure setting for the relief valve on the rod end of the tilt cylinder ... 13790 ± 345 kPa (2000 ± 50 psi)

Pressure setting for the relief valve on the head end of the tilt cylinder ... 23785 ± 170 kPa (3450 ± 25 psi)