D6M Track-Type Tractor Power Train Steering and Brake Control Valve Caterpillar


Steering and Brake Control Valve
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1.1. Adjustment Procedure for Clutch Levers and Spring Assemblies



Illustration 1g00101686

(1) 7T-1112 Spring (inner)

Quantity ... 2
Test length ... 72.1 mm (2.84 inch)
Test force ... 169 ± 8 N (38.0 ± 1.8 lb)
Free length after test ... 105.4 mm (4.15 inch)
Outside diameter ... 20.62 mm (0.812 inch)

(2) 7T-1113 Spring (outer)

Quantity ... 2
Test length ... 72.1 mm (2.84 inch)
Test force ... 39.2 ± 2.0 N (8.81 ± 0.40 lb)
Free length after test ... 122.9 mm (4.84 inch)
Outside diameter ... 14.27 mm (0.562 inch)

(3) 5M-9622 Spacer

Thickness of one spacer ... 1.60 mm (0.063 inch)
Outside diameter ... 20.62 ± 0.25 mm (0.812 ± 0.010 inch)
One spacer will change pressure approximately. ... 122 kPa (17.7 psi)

(3) 5M-9623 Spacer

Thickness of one spacer ... 0.90 mm (0.035 inch)
Outside diameter ... 20.62 ± 0.25 mm (0.812 ± 0.010 inch)
One spacer will change pressure approximately. ... 71 kPa (10.3 psi)

(3) 5M-9624 Spacer

Thickness of one spacer ... 0.25 mm (0.010 inch)
Outside diameter ... 20.62 ± 0.25 mm (0.812 ± 0.010 inch)
One spacer will change pressure approximately. ... 19.3 kPa (2.80 psi)

(4) 6I-9522 Spring (orange stripe)

Quantity ... 2
Test length ... 77.0 mm (3.03 inch)
Test force ... 169 ± 8 N (38.0 ± 1.8 lb)
Free length after test ... 109.4 mm (4.31 inch)
Outside diameter ... 20.62 mm (0.812 inch)

(5) 4M-2381 Spring

Quantity ... 4
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)

(6) 7G-3046 Spacer

Thickness of one spacer ... 0.25 mm (0.010 inch)
Outside diameter ... 17.50 ± 0.25 mm (0.689 ± 0.010 inch)
One spacer will change pressure approximately. ... 38 kPa (5.5 psi)

(6) 7G-3177 Spacer

Thickness of one spacer ... 0.80 mm (0.031 inch)
Outside diameter ... 17.50 ± 0.25 mm (0.689 ± 0.010 inch)
One spacer will change pressure approximately. ... 117 kPa (17.0 psi)

(6) 3T-6822 Spacer

Thickness of one spacer ... 1.8 mm (0.07 inch)
Outside diameter ... 17.50 ± 0.25 mm (0.689 ± 0.010 inch)
One spacer will change pressure approximately. ... 267 kPa (38.7 psi)

(7) 7G-3046 Spacer

Thickness of one spacer ... 0.25 mm (0.010 inch)
Outside diameter ... 17.50 ± 0.25 mm (0.689 ± 0.010 inch)

(7) 7G-3177 Spacer

Thickness of one spacer ... 0.80 mm (0.031 inch)
Outside diameter ... 17.50 ± 0.25 mm (0.689 ± 0.010 inch)
As required, use spacers to achieve a clearance between spring (9) and spacers (7). The clearance that is required ... 0.50 ± 0.13 mm (0.020 ± 0.005 inch)

(8) 7T-7970 Spring (Inner with a yellow stripe)

Quantity ... 2
Test length ... 49.0 mm (1.93 inch)
Test force ... 191.3 ± 9.6 N (43.00 ± 2.16 lb)
Free length after test ... 59.9 mm (2.36 inch)
Outside diameter ... 15.88 mm (0.625 inch)

(9) 7T-1118 Spring

Quantity ... 2
Test length ... 52.32 mm (2.060 inch)
Test force ... 172 ± 9 N (38.7 ± 2.0 lb)
Free length after test ... 59.2 mm (2.33 inch)
Outside diameter ... 15.88 mm (0.625 inch)

(10) 3P-3202 Spring (outer)

Quantity ... 2
Test length ... 34.8 mm (1.37 inch)
Test force ... 43.2 ± 2.2 N (9.72 ± 0.49 lb)
Free length after test ... 106.17 mm (4.180 inch)
Outside diameter ... 26.97 mm (1.062 inch)



Illustration 2g00101405

(11) 4J-6555 Spring

Test length ... 28.4 mm (1.12 inch)
Test force ... 5.1 ± 0.4 N (1.14 ± 0.10 lb)
Free length after test ... 35.1 mm (1.38 inch)
Outside diameter ... 8.6 mm (0.34 inch)

Adjustment Procedure for Clutch Levers and Spring Assemblies




Illustration 3g00101433

Note: This adjustment should be made before any system pressures are adjusted.

  1. Remove cover (13) and loosen bolt (14) .

  1. Move clutch lever (16) until roller (12) is in contact with plunger (17) .

  1. Move spring assembly (15) until the pin of the spring assembly is in the front detent of the clutch lever. See Illustration 3.

  1. Tighten bolt (14) .

  1. Repeat the procedure for the other clutch lever.

  1. Install cover (13) .

Information System: