Challenger 65E, Challenger 75E, Challenger 85E and Challenger 95E Agricultural Tractors Power Train Caterpillar

Illustration 1	g00277460

Illustration 2	g00277461

Dry nitrogen charge pressure at 20°C (68°F)

Tension cylinder on machine ... 1860 kPa (270 psi)

Tension cylinder off machine ... 1526 kPa (220 psi)

(1) Apply 7M-7456 Compound to the bore of the tension cylinder before you install the end bearing. Install the end bearing. The center of the end bearing should be perpendicular to the centerline of the cylinder rod.

(2) Bore of new cylinder head ... 70.13 ± 0.03 mm (2.761 ± 0.001 inch)

(3) Diameter of a new cylinder rod ... 69.800 ± 0.038 mm (2.7480 ± 0.0015 inch)

(4) Bore of new cylinder tube ... 234.90 ± 0.10 mm (9.248 ± 0.004 inch)

(5) Torque for cap for nitrogen charging valve ... 5 ± 1 N·m (44.3 ± 8.9 lb in)

(6) Apply 4C-5593 Anti-Seize Compound to the bolt. Torque for the bolt ... 3600 ± 400 N·m (2650 ± 300 lb ft)

(7) Apply lubricant to the sealing lip. Use the lubricant that will be sealed in the cylinder.

(8) 6E-4123 Spring

Test length ... 647.07 mm (25.475 inch)

Test force ... 96700 ± 7736 N (21755 ± 1740 lb)

Length after test ... 732.8 mm (28.85 inch)

Outside diameter ... 215.9 mm (8.50 inch)

Diameter of wire ... 47.63 mm (1.875 inch)

(9) Apply lubricant to the sealing lip. Use the lubricant that will be sealed in the cylinder.

(10) Apply 7M-7456 Compound to the bore of the tension cylinder before you install the seal. Apply lubricant to the seal.

Note: Before you install the tension cylinder, coat the following items with 4C-5593 Anti-Seize Compound : pin bores, frame and front axle.

(11) Relief valve

(12) Breather

(13) 7S-8553 Spring

Test length ... 44.069 mm (1.735 inch)

Test force ... 267 ± 21.36 N (60.0 ± 4.8 lb)

Length after test ... 50.546 mm (1.99 inch)

Outside diameter ... 14.275 mm (0.562 inch)

Diameter of wire ... 2.87 mm (0.113 inch)

(14) 9M-1974 Hard Washer

Thickness ... 2.0 mm (0.078 inch)

As required, use washers (13) to attain the following conditions at 49° ± 3°C (120° ± 5°F).

Inlet pressure ... 18600 ± 350 kPa (2700 ± 50 psi)

Outlet pressure ... 20 ± 5 kPa (3 ± .73 psi)

(15) Torque for nut ... 50 ± 7 N·m (37 ± 5 lb ft)