12H, 140H, 143H, 160H and 163H Motor Graders Power Train Selector and Pressure Control Valve Caterpillar


Selector and Pressure Control Valve
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Illustration 1g00907239

(1) Torque for five assemblies of the adjuster ... 75 ± 7 N·m (55 ± 5 lb ft)

(2) Torque for plug ... 75 ± 7 N·m (55 ± 5 lb ft)

(3) Torque for five nuts ... 25 ± 4 N·m (18 ± 3 lb ft)

(4) Orifice

Equivalent diameter ... 0.7 mm (0.03 inch)
Color code ... silver

(5) Torque for plug ... 10 ± 2 N·m (90 ± 18 lb in)

(6) Torque for four valve groups ... 50 ± 5 N·m (37 ± 4 lb ft)

(7) Torque for four nuts ... 20.0 ± 2.5 N·m (175 ± 22 lb in)

(8) Torque for three green plugs ... 4.5 ± 1.0 N·m (40 ± 9 lb in)

(9) Minimum torque for yellow plug ... 0.6 N·m (5 lb in)

(10) Torque for plug ... 14 ± 4 N·m (10 ± 3 lb ft)




Illustration 2g00907244

Section A-A

(11) Spring

Test length ... 43.86 mm (1.727 inch)
Test force ... 565.7 ± 28.3 N (127.17 ± 6.36 lb)
Free length after test ... 55.58 mm (2.188 inch)
Outside diameter ... 21 mm (0.8 inch)

(12) Spring

Test length ... 12.2 mm (0.48 inch)
Test force ... 2.30 ± 0.18 N (0.517 ± 0.041 lb)
Free length after test ... 22.6 mm (0.89 inch)
Outside diameter ... 7.62 mm (0.300 inch)

(13) Spring (exterior)

Test length ... 32.0 mm (1.26 inch)
Test force ... 108.8 ± 5.4 N (24.46 ± 1.21 lb)
Free length after test ... 52.7 mm (2.07 inch)
Outside diameter ... 17 mm (0.7 inch)

(14) Spring (interior)

Test length ... 32.0 mm (1.26 inch)
Test force ... 43.8 ± 2.2 N (9.85 ± 0.49 lb)
Free length after test ... 52.7 mm (2.07 inch)
Outside diameter ... 12 mm (0.5 inch)

(15) Spring (exterior)

Quantity ... two
Color code ... three light blue stripes
Outside diameter ... 14.732 mm (0.5800 inch)
First Test
Test length ... 79.5 mm (3.13 inch)
Test force ... 78.3 ± 3.9 N (17.60 ± 0.88 lb)
Second Test
Test length ... 63.0 mm (2.48 inch)
Test force ... 237.3 ± 8.7 N (53.35 ± 1.96 lb)
Free length after test ... 87.63 mm (3.450 inch)

(16) Orifice

Equivalent diameter ... 1.00 mm (0.039 inch)
Color code ... green

(17) Spring (interior)

Quantity ... two
Color code ... two orange stripes
Test length ... 63.93 mm (2.517 inch)
Test force ... 43.37 ± 2.17 N (9.750 ± 0.489 lb)
Free length after test ... 80.442 mm (3.1670 inch)
Outside diameter ... 8.128 mm (0.3200 inch)

(18) Shim

Outside diameter ... 15.09 ± 0.25 mm (0.594 ± 0.010 inch)
Thickness ... 0.80 mm (0.031 inch)
Pressure change of shim ... 77.4 kPa (11.23 psi)

(19) Spacer

Outside diameter ... 15.09 ± 0.25 mm (0.594 ± 0.010 inch)
Thickness ... 0.4 mm (0.02 inch)
Pressure change of spacer ... 38.7 kPa (5.62 psi)

(20) Spring (exterior)

Quantity ... two
Color code ... three light green stripes
Outside diameter ... 14.732 mm (0.5800 inch)
First Test
Test length ... 79.5 mm (3.13 inch)
Test force ... 68.0 ± 3.4 N (15.28 ± 0.76 lb)
Second Test
Test length ... 63.0 mm (2.48 inch)
Test force ... 313.8 ± 10.8 N (70.55 ± 2.43 lb)
Free length after test ... 84.07 mm (3.310 inch)

(21) Spring

Quantity ... four
Test length ... 20.5 mm (0.80 inch)
Test force ... 27.8 ± 1.4 N (6.25 ± 0.31 lb)
Free length after test ... 43.20 mm (1.700 inch)
Outside diameter ... 27.40 mm (1.078 inch)

(22) Spring

Quantity ... four
Test length ... 27.50 mm (1.082 inch)
Test force ... 8.90 ± 0.44 N (2.000 ± 0.100 lb)
Free length after test ... 30.69 mm (1.208 inch)
Outside diameter ... 7.50 mm (0.295 inch)

(23) Spring (interior)

Color code ... yellow
Test length ... 63.93 mm (2.517 inch)
Test force ... 57.8 ± 2.9 N (12.99 ± 0.65 lb)
Free length after test ... 80.442 mm (3.1670 inch)
Outside diameter ... 8.128 mm (0.3200 inch)

(24) Orifice

Equivalent diameter ... 0.90 mm (0.035 inch)
Color code ... brown

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