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


Control Valve (Blade Lift)
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Illustration 1g00811263

(1) Torque for two plugs ... 80 ± 15 N·m (60 ± 11 lb ft)

(2) Lubricate seals with a thin covering of the lubricant that is being sealed.

(3) Spring

Test length ... 28.0 mm (1.1 inch)
Test force ... 46.0 ± 2.4 N (10.00 ± 0.54 lb)
Free length after test ... 48.42 mm (1.906 inch)
Outside diameter ... 18.2 mm (0.72 inch)

(4) Torque for blade lift relief valve ... 35 ± 7 N·m (26 ± 5 lb ft)

Note: Before you install valves (5) and seats (6) into the control valve body, assemble the valves and seats together.

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

(8) Spring

Test length ... 14.0 mm (0.55 inch)
Test force ... 18.0 ± 1.4 N (4.00 ± 0.32 lb)
Free length after test ... 18.4 mm (0.72 inch)
Outside diameter ... 7.2 mm (0.28 inch)

(9) Lubricate rings with a thin covering of the lubricant that is being sealed.

(10) Two Springs

Test length ... 18.7 mm (0.74 inch)
Test force ... 12.9 ± 1.0 N (2.90 ± 0.23 lb)
Free length after test ... 25.1 mm (0.99 inch)
Outside diameter ... 10.4 mm (0.41 inch)

(11) Detent Control Valve Group

Spring
Test length ... 25.1 mm (0.99 inch)
Test force ... 180.0 ± 9.5 N (41.0 ± 2.13 lb)
Free length after test ... 51.4 mm (2.02 inch)
Outside diameter ... 26.7 mm (1.05 inch)

(12) Spring

Color Code ... Light blue stripe
Test length ... 21.0 mm (0.83 inch)
Test force ... 11.0 ± 0.6 N (2.5 ± 0.14 lb)
Free length after test ... 29.2 mm (1.15 inch)
Outside diameter ... 15.0 mm (0.59 inch)

(13) Torque for Detent ... 12 ± 3 N·m (9 ± 2 lb ft)

Note: Apply 9S-3263 Thread Lock to the threads of the detent prior to installation.

(14) Spring

Test length ... 8.6 mm (0.34 inch)
Test force ... 0.234 ± 0.024 N (0.0530 ± 0.0054 lb)
Free length after test ... 10.0 mm (0.39 inch)
Outside diameter ... 4.6 mm (0.18 inch)

Gently seat ball (15) into the valve body.

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

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