120H and 135H Motor Graders Hydraulic and Steering System Control Valve (Scarifier) Caterpillar


Control Valve (Scarifier)
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Illustration 1g01388239

A cross section of the control valve with backup ring (6)




Illustration 2g01946564

A cross section of the control valve without backup ring (6)

(1) Torque for two check valve groups ... 80 ± 4 N·m (60 ± 3 lb ft)

(2) Lightly lubricate the O-ring seals with the lubricant that is being sealed.

(3) Torque for pipe plug ... 35 ± 7 N·m (26 ± 5 lb ft)

(4) Torque for relief valve group ... 35 ± 3 N·m (26 ± 2 lb ft)

(5) Lightly lubricate the O-ring seals with the lubricant that is being sealed.

(6) Lightly lubricate the backup rings with the lubricant that is being sealed.

(7) 111-8233 Spring

Length under test force ... 15.50 mm (0.610 inch)
Test force ... 13.50 ± 0.80 N (3.0 ± 0.2 lb)
Free length after test ... 25.60 mm (1.008 inch)
Outside diameter ... 15.00 mm (0.591 inch)

(8) 6E-5153 Spring

Length under test force ... 14.00 mm (0.551 inch)
Test force ... 18.00 ± 1.44 N (4.0 ± 0.3 lb)
Free length after test ... 18.38 mm (0.724 inch)
Outside diameter ... 7.2 mm (0.28 inch)

(9) Seat the ball gently into the valve body at assembly.

(10) 6E-3007 Spring

Length under test force ... 8.60 mm (0.339 inch)
Test force ... 0.234 ± 0.024 N (0.1 ± 0.0 lb)
Free length after test ... 10.00 mm (0.394 inch)
Outside diameter ... 4.6 mm (0.18 inch)

(11) 102-7412 Spring

Length under test force ... 28.00 mm (1.102 inch)
Test force ... 46.00 ± 2.40 N (10.3 ± 0.5 lb)
Free length after test ... 48.417 mm (1.9062 inch)
Outside diameter ... 18.20 mm (0.717 inch)

(12) Torque for lever ... 25 ± 6 N·m (18 ± 4 lb ft)

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