938G Series II Wheel Loader and IT38G Series II Integrated Toolcarrier Hydraulic System Main Control Valve - Integrated Toolcarrier Caterpillar

Illustration 1	g00920858
Main Control Valve

Note: Viewing plane A-A is a sectional view of the lift control valve. Viewing plane B-B is a sectional view of the tilt control valve. Viewing plane C-C is a sectional view of the auxiliary control valve.D-D is a sectional view of the fourth function control valve. The main control valve in Illustration 1 is for machines that are equipped with a fourth function. Machines without a fourth function will not be equipped with the fourth function control valve.

(1) Tighten the plug to the following torque. ... 70 ± 10 N·m (52 ± 7 lb ft)

(2) Tighten the relief valve to the following torque. ... 70 ± 10 N·m (52 ± 7 lb ft)

(3) Tighten the locking nut to the following torque. ... 50 ± 7 N·m (37 ± 5 lb ft)

Illustration 2	g00920916
Sectional View A-A

(4) Thickness of the 6E-5431 Shim ... 0.5 mm (0.02 inch)

(5) 6E-5438 Spring

Free length ... 41.00 mm (1.614 inch)

Outside diameter ... 23.86 mm (0.940 inch)

Assembled length ... 34 mm (1.34 inch)

Load at assembly ... 300 ± 24 N (67 ± 5.4 lb)

(6) 6E-5437 Spring

Free length ... 44.33 mm (1.745 inch)

Outside diameter ... 15.5 mm (0.60 inch)

Assembled length ... 35 mm (1.38 inch)

Load at assembly ... 50 ± 4 N (11 ± 0.9 lb)

(7) Clearance for the stem within the valve body should be between 0.006 mm (0.0002 inch) and 0.008 mm (0.0003 inch).

(8) 4T-3148 Spring

Free length ... 38.40 mm (1.512 inch)

Outside diameter ... 5.40 mm (0.213 inch)

Assembled length ... 24 mm (0.945 inch)

Load at assembly ... 4 ± 2.2 N (0.900 ± 0.495 lb)

(9) Tighten the plug to the following torque. ... 190 ± 20 N·m (140 ± 15 lb ft)

(10) 9T-7634 Spring

Free length ... 21.57 mm (0.849 inch)

Outside diameter ... 8.51 mm (0.335 inch)

Assembled length ... 17 mm (0.669 inch)

Load at assembly ... 2.29 N (0.514 lb)

(11) Tighten the check valve to the following torque. ... 45 ± 5 N·m (33 ± 4 lb ft)

Illustration 3	g00920925
Sectional View B-B

(12) Thickness of the 6E-5431 Shim ... 0.5 mm (0.02 inch)

(13) 6E-5440 Spring

Free length ... 41.00 mm (1.614 inch)

Outside diameter ... 23.86 mm (0.940 inch)

Assembled length ... 37 mm (1.46 inch)

Load at assembly ... 217 ± 17 N (48.7838 ± 3.8218 lb)

(14) 6E-5439 Spring

Free length ... 54.00 mm (2.126 inch)

Outside diameter ... 14.78 mm (0.582 inch)

Assembled length ... 35 mm (1.38 inch)

Load at assembly ... 68 ± 4 N (15.287 ± 0.900 lb)

(15) Clearance for the stem within the valve body should be between 0.006 mm (0.0002 inch) and 0.008 mm (0.0003 inch).

(16) 6E-5438 Spring

Free length ... 41.00 mm (1.614 inch)

Outside diameter ... 23.86 mm (0.940 inch)

Assembled length ... 34 mm (1.34 inch)

Load at assembly ... 300 ± 24 N (67 ± 5.4 lb)

(17) 6E-5437 Spring

Free length ... 44.33 mm (1.745 inch)

Outside diameter ... 15.5 mm (0.60 inch)

Assembled length ... 35 mm (1.38 inch)

Load at assembly ... 50 ± 4 N (11 ± 0.9 lb)

(18) Tighten the locking nuts to the following torque. ... 14 ± 2 N·m (124 ± 18 lb in)

(19) Tighten the line relief valve to the following torque. ... 45 ± 5 N·m (33 ± 4 lb ft)

(20) Tighten the plug to the following torque. ... 190 ± 20 N·m (140 ± 15 lb ft)

(21) 4T-3148 Spring

Free length ... 38.40 mm (1.512 inch)

Outside diameter ... 5.40 mm (0.213 inch)

Assembled length ... 24 mm (0.945 inch)

Load at assembly ... 4 ± 2.2 N (0.900 ± 0.495 lb)

(22) Tighten the line relief valve to the following torque. ... 45 ± 5 N·m (33 ± 4 lb ft)

(23) Tighten the locking nut to the following torque. ... 24 ± 3 N·m (18 ± 2 lb ft)

Illustration 4	g00920977
Sectional View C-C

(24) Thickness of the 6E-5431 Shim ... 0.5 mm (0.02 inch)

(25) 6E-5440 Spring

Free length ... 41.00 mm (1.614 inch)

Outside diameter ... 23.86 mm (0.940 inch)

Assembled length ... 37 mm (1.46 inch)

Load at assembly ... 217 ± 17 N (48.7838 ± 3.8218 lb)

(26) 6E-5439 Spring

Free length ... 54.00 mm (2.126 inch)

Outside diameter ... 14.78 mm (0.582 inch)

Assembled length ... 35 mm (1.38 inch)

Load at assembly ... 68 ± 4 N (15.287 ± 0.900 lb)

(27) Clearance for the stem within the valve body should be between 0.006 mm (0.0002 inch) and 0.008 mm (0.0003 inch).

(28) Tighten the locking nuts to the following torque. ... 14 ± 2 N·m (124 ± 18 lb in)

(29) Tighten the line relief valve to the following torque. ... 45 ± 5 N·m (33 ± 4 lb ft)

(30) At assembly, tighten the plug to the following torque. ... 190 ± 20 N·m (140 ± 15 lb ft)

(31) 4T-3148 Spring

Free length ... 38.40 mm (1.512 inch)

Outside diameter ... 5.40 mm (0.213 inch)

Assembled length ... 24 mm (0.945 inch)

Load at assembly ... 4 ± 2.2 N (0.900 ± 0.495 lb)

(32) Tighten the line relief valve to the following torque. ... 45 ± 5 N·m (33 ± 4 lb ft)

(33) Tighten the locking nuts to the following torque. ... 14 ± 2 N·m (124 ± 18 lb in)

Illustration 5	g00921024
Sectional View D-D

(34) Thickness of the 6E-5431 Shim ... 0.5 mm (0.02 inch)

(35) 6E-5440 Spring

Free length ... 41.00 mm (1.614 inch)

Outside diameter ... 23.86 mm (0.940 inch)

Assembled length ... 37 mm (1.46 inch)

Load at assembly ... 217 ± 17 N (48.7838 ± 3.8218 lb)

(36) 6E-5439 Spring

Free length ... 54.00 mm (2.126 inch)

Outside diameter ... 14.78 mm (0.582 inch)

Assembled length ... 35 mm (1.38 inch)

Load at assembly ... 68 ± 4 N (15.287 ± 0.900 lb)

(37) Clearance for the stem within the valve body should be between 0.006 mm (0.0002 inch) and 0.008 mm (0.0003 inch).

(38) The end of the stem with the yellow marking should be installed toward the rod end of the valve body.

(39) Tighten the locking nuts to the following torque. ... 14 ± 2 N·m (124 ± 18 lb in)

(40) Tighten the line relief valve to the following torque. ... 45 ± 5 N·m (33 ± 4 lb ft)

(41) At assembly, tighten the plug to the following torque. ... 190 ± 20 N·m (140 ± 15 lb ft)

(42) 4T-3148 Spring

Free length ... 38.40 mm (1.512 inch)

Outside diameter ... 5.40 mm (0.213 inch)

Assembled length ... 24 mm (0.945 inch)

Load at assembly ... 4 ± 2.2 N (0.900 ± 0.495 lb)

(43) Tighten the line relief valve to the following torque. ... 45 ± 5 N·m (33 ± 4 lb ft)

(44) Tighten the locking nuts to the following torque. ... 14 ± 2 N·m (124 ± 18 lb in)

Illustration 6	g00921013

(A) In order to maintain a load of 368 ± 15 N (82.7 ± 3.37 lb), the shims must be added for the following dimension. ... 43.0 ± 0.1 mm (1.6929 ± 0.0039 inch)

Spring tension for both end caps in section A-A ... 323 ± 15 N (73 ± 3.4 lb)

Spring tension for the end cap (X) in section B-B ... 368 ± 15 N (83 ± 3.4 lb)

Spring tension for end cap (Y) in section B-B ... 323 ± 15 N (73 ± 3.4 lb)

Spring tension for both end caps in section C-C ... 368 ± 15 N (83 ± 3.4 lb)

Spring tension for both end caps in section D-D ... 368 ± 15 N (83 ± 3.4 lb)