120H and 135H Motor Graders Hydraulic and Steering System Articulated Hitch Caterpillar


Articulated Hitch
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120H and 135H Motor Graders Hydraulic and Steering System [RENR4161]
FRAME AND BODY
HITCH GP
120H and 135H Motor Graders Hydraulic and Steering System Articulated Hitch



Illustration 1g00866643

(1) Center the bearing in the bore. Leave 12.7 ± 0.5 mm (0.50 ± 0.02 inch) on each side of the bearing that is in the bore.

(2) Cool the bearing between -57 to -90°C (-70 to -131°F) before you press the bearing into the bore.

(3) When you install the sealing lips, lubricate the sealing lips with a thin covering of lubricant that is being sealed.

(4) Tighten two diagonally opposite bolts to an equal amount. Then tighten the remaining two bolts to an equal amount. Final torque for the four bolts is standard.

(5) Tighten the four bolts around the cap evenly. Tighten the four bolts to 47 ± 7 N·m (35 ± 5 lb ft). Measure the distance between the cap and the frame. Install a shim of minimum thickness under the cap. Install all of the bolts and tighten. Final torque for the six bolts is standard.

(6) 8D-9689 Shim Pack

Assembled thickness of shims ... 2.54 ± 0.08 mm (0.100 ± 0.003 inch)
Thickness of one shim ... 0.15 mm (0.006 inch)
Thickness of one shim ... 0.81 mm (0.032 inch)
Thickness of one shim ... 0.05 mm (0.002 inch)
Inside diameter ... 127 mm (5 inch)
Outside diameter ... 184.2 mm (7.25 inch)

(7) Tighten two opposite bolts to a preliminary torque of 81 ± 14 N·m (60 ± 10 lb ft). Measure the gap all the way around between the frame and the plate. Install a shim of minimum measurement minus 0.25 mm (.010 inch) under the plate. Final torque for the four bolts is 120 ± 20 N·m (89 ± 15 lb ft).

Preliminary torque for two bolts (7) ... 81 ± 14 N·m (60 ± 10 lb ft)

Final torque for four bolts (7) ... 120 ± 20 N·m (89 ± 15 lb ft)

Note: Apply 4C-4030 Thread Lock Compound to the threads before installing four bolts (7). Tighten four bolts (7) in the sequence that is shown.

(8) Torque for six bolts ... 120 ± 20 N·m (89 ± 15 lb ft)

(9) 6K-4187 Shim Pack

Assembled thickness of shims ... 2.54 ± 0.06 mm (0.100 ± 0.002 inch)
Thickness of one shim ... 0.15 mm (0.006 inch)
Thickness of one shim ... 0.81 mm (0.032 inch)
Thickness of one shim ... 0.05 mm (0.002 inch)
Inside diameter ... 88.9 mm (3.50 inch)
Outside diameter ... 139.7 mm (5.50 inch)

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