797F and 797F XQ Off-Highway Truck Steering System Caterpillar

Illustration 1	g03324608

(1) All clamps and bolts must be aligned in this position.

(2) Orient the gaps between the clamps and the slots in the tie rod, as shown. The gaps will ensure clearance at final assembly. Apply alternate torque to ensure an equal gap between the two clamps on both sides.

Note: Apply Loctite Graphite-50 to the threads and the taper of the ball studs. Apply Loctite Graphite-50 to the washer faces of nuts.

(3) Torque for eight locknuts ... 840 ± 40 N·m (620 ± 30 lb ft)

(4) Torque for four locknuts ... 5000 ± 200 N·m (3688 ± 148 lb ft)

(D) Dimension to hold for clamp assemblies from rod end ... 6.35 ± 1.53 mm (0.250 ± 0.060 inch)

Illustration 2	g01948700

(5) Use the following procedure to install the pin:

1. Insert the pin and assemble the bottom plate (10) with the O-ring seal (7). Apply Loctite 271 to the threads and then torque the bolts (8).

2. Assemble the top plate (6) with the O-ring seal (7). Apply Loctite 271 to the threads and then torque the bolts (8).

Note: Refer to the Steering System Testing and Adjusting, "Center Arm (Steering) - Adjust" to determine the number of shims to use.

(9) Thickness of 332-7431 shim ... 1.0 mm (0.04 inch)

Illustration 3	g03324610
View (F-F)

Illustration 4	g03324618
Section G-G

(11) Torque for the two nuts (12) that are on the two ball studs (11) of the steering cylinder mounting group ... 5000 ± 200 N·m (3700 ± 150 lb ft)

Note: Apply Loctite Graphite-50 to the threads and the tapers of the ball studs (11), and the washer face of the self-locking nuts (12).

Illustration 5	g03324627
Section H-H

(13) Shims

8D-8573 Shim ... .38 mm (.015 inch)

8D-8574 Shim ... .64 mm (.025 inch)

Note: Use shims (13) between the clevis and the shims to provide a maximum clearance of 1.0 mm (.04 inch). When possible, shims (13) should be added to both sides of the clevis.

(14) Torque for the two self-locking nuts (15) that are on the two cylinder pins (14) of the steering cylinder mounting group ... 2550 ± 100 N·m (1881 ± 74 lb ft)

Note: Apply Loctite Graphite-50 to the threads and the tapers of the cylinder pins (14), and the washer face of the self-locking nuts (15).