120H and 135H Motor Graders Hydraulic and Steering System Combination Valve Caterpillar


Combination Valve
`
120H and 135H Motor Graders Hydraulic and Steering System [RENR4161]
HYDRAULIC SYSTEM
VALVE GP-COMBINATION
120H and 135H Motor Graders Hydraulic and Steering System Combination Valve
120H and 135H Motor Graders Hydraulic and Steering System Combination Valve



Illustration 1g01391899

Top view

(1) Steering relief valve

ReferenceFor more information on the steering relief valve, refer to the Hydraulic and Steering System Specifications, "Relief Valve (Steering)".

(2) Torque for implement relief valve ... 65 ± 5 N·m (48 ± 4 lb ft)

ReferenceFor more information on the implement relief valve, refer to the Hydraulic and Steering System Specifications, "Relief Valve (Implement)".

(3) Torque for signal relief valve ... 35 ± 5 N·m (26 ± 4 lb ft)

ReferenceFor more information on the signal relief valve, refer to the Hydraulic and Steering System Specifications, "Relief Valve (Signal)".




Illustration 2g01392281

View A-A

(E) Angle for tank return line joint ... 60 degrees




Illustration 3g01391906

View B-B

(4) Torque for shuttle valve ... 32 ± 5 N·m (285 ± 45 lb in)




Illustration 4g01391910

Section C-C

(5) 9F-6705 Spring

Length under test force ... 23.1 mm (0.91 inch)
Test force ... 10.5 to 12.0 N (2.35 to 2.75 lb)
Free length after test ... 49.3 mm (1.94 inch)
Outside diameter ... 13.0 mm (0.51 inch)

(6) The valve should fit inside the valve body with a clearance of 0.018 to 0.023 mm (0.0007 to 0.0009 inch).

(7) 6E-1924 Spring

Length under test force ... 83 mm (3.3 inch)
Test force ... 73 ± 7 N (16 ± 1.6 lb)
Free length after test ... 88.00 mm (3.465 inch)
Outside diameter ... 19.00 mm (0.748 inch)

(8) 6E-1925 Spring

Length under test force ... 76 mm (3.0 inch)
Test force ... 43.6 ± 4.0 N (9.8 ± 0.9 lb)
Free length after test ... 81.20 mm (3.197 inch)
Outside diameter ... 11.00 mm (0.433 inch)

(9) Torque for three orifice plugs ... 10 ± 2 N·m (90 ± 18 lb in)




Illustration 5g01391988

Section D-D

(10) 3T-8236 Spring

Length under test force ... 16.92 mm (0.666 inch)
Test force ... 66.5 ± 5.0 N (15 ± 1.1 lb)
Free length after test ... 20.53 mm (0.808 inch)
Outside diameter ... 6.06 mm (0.239 inch)

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