953C TRACK-TYPE LOADER HYDRAULICS Caterpillar


Valves

Usage:

(1) 3G-6812 Spring:

Length under test force ... 81.8 mm (3.22 in)

Test force ... 200 ± 16 N (45 ± 4 lb)

Free length after test ... 115.44 mm (4.544 in)

Outside diameter ... 24.3 mm (.96 in)

(2) Torque for four bolts ... 100 ± 5 N·m (75 ± 4 lb ft)

(3) Torque for four nuts ... 32.5 ± 2.5 N·m (24 ± 2 lb ft)

(4) Depth to install seal ... 1.0 ± 0.5 mm (.04 ± .02 in)

NOTE: Put lubricant on lip of seal and install seal to depth.

(5) Torque bolts marked "X" to ... 100 ± 5 N·m (75 ± 4 lb ft)

Lift And Tilt Control Valve

NOTE: Refer to Disassembly and Assembly module for correct adjustment of detents.

(1) 5H-2341 Spring:

Length under test force ... 50.8 mm (2.00 in)

Test force ... 3.4 to 3.8 N (.75 to .87 lb)

Free length after test ... 63.5 mm (2.50 in)

Outside diameter ... 24.61 mm (.969 in)

(2) Torque for two plugs ... 200 ± 15 N·m (150 ± 11 lb ft)

(3) Torque for four bolts ... 100 ± 5 N·m (75 ± 4 lb ft)

(4) Torque to install rod end tilt relief valve ... 135 ± 10 N·m (100 ± 7 lb ft)

(5) Torque for plug ... 40 ± 4 N·m (30 ± 3 lb ft)

(6) Torque to install head end tilt relief valve ... 80 ± 4 N·m (60 ± 3 lb ft)

(7) 5J-9089 Spring:

Length under test force ... 42.9 mm (1.69 in)

Test force ... 105.0 ± 6.7 N (24.00 ± 1.50 lb)

Free length after test ... 106.9 mm (4.21 in)

Outside diameter ... 39.1 mm (1.54 in)

(8) Torque for detents ... 40 ± 4 N·m (30 ± 3 lb ft)

(9) 6J-9996 Spring:

Length under test force ... 15.87 mm (.625 in)

Test force ... 59.1 ± 5.8 N (13.30 ± 1.30 lb)

Free length after test ... 20.24 mm (.797 in)

Outside diameter ... 5.36 mm (.211 in)

(10) Torque for nuts ... 35 ± 3 N·m (26 ± 2 lb ft)

(11) 3G-4784 Spring (outer):

Length under test force ... 42.9 mm (1.69 in)

Test force ... 42 ± 4 N (9.5 ± .8 lb)

Free length after test ... 115.8 mm (4.56 in)

Outside diameter ... 57.9 mm (2.28 in)

(12) 5J-9089 Spring (inner):

Length under test force ... 42.9 mm (1.69 in)

Test force ... 105.0 ± 6.7 N (24.00 ± 1.50 lb)

Free length after test ... 106.9 mm (4.21 in)

Outside diameter ... 39.1 mm (1.54 in)

(13) Torque for three plugs ... 70 ± 10 N·m (50 ± 7 lb ft)

(14) Torque to install head end lift relief valve ... 80 ± 4 N·m (60 ± 3 lb ft)

(15) Torque for two plugs ... 30 ± 3 N·m (22 ± 2 lb ft)

(16) 9J-0461 Spring:

Quantity ... two

Length under test force ... 35.0 mm (1.38 in)

Test force ... 1.8 to 2.2 N (.40 to .48 lb)

Free length after test ... 47.0 mm (1.85 in)

Outside diameter ... 24.9 mm (.98 in)

Relief Valve For Head End Of Tilt And Lift Cylinders

Pressure setting 32 600 + 600 - 100 kPa (4728 + 85 - 15 psi)

At a flow of ... 38 ± 2 liter/min (10 ± .5 U.S. gpm)

(1) 5J-9103 Spring (outer):

Length under test force ... 52.2 mm (2.06 in)

Test force ... 639 to 756 N (143.6 to 169.8 lb)

Free length after test ... 63.8 mm (2.51 in)

Outside diameter ... 19.84 mm (.781 in)

(2) 5J-9104 Spring (inner):

Length under test force ... 52.2 mm (2.06 in)

Test force ... 194 to 227 N (43.5 to 51.1 lb)

Free length after test ... 65.0 mm (2.56 in)

Outside diameter ... 11.12 mm (.438 in)

(3) Torque for nut ... 21 ± 2 N·m (15 ± 1 lb ft)

(4) Torque for plug ... 65 ± 5 N·m (48 ± 4 lb ft)

Relief Valve For Rod End Of Tilt Cylinder

NOTE: Test at 49° ± 3°C (120° ± 5°F) for pressure and flow requirements.

LOW pressure setting:

Pilot pressure at ... 0.0 kPa (0.0 psi)

Inlet pressure at ... 26 000 + 1300 - 100 kPa (4002 + 189 - 14.5 psi)

At a flow of ... 38 ± 4 liter/min (5.5 ± 1.1 U.S. gpm)

HIGH pressure setting:

Pilot pressure at ... 6900 kPa (1000 psi)

Inlet pressure at ... 34 500 + 1300 - 100 kPa (5370 + 189 - 14.5 psi)

At a flow of ... 2.0 ± 0.5 liter/min (.53 ± .13 U.S. g gpm)

(1) 8H-3532 Spring:

Quantity ... 1

Length under test force ... 25.4 mm (1.00 in)

Test force ... 89 to 101 N (19.8 to 23.2 lb)

Free length after test ... 42.06 mm (1.656 in)

Outside diameter ... 11.91 mm (.469 in)

(2) 8J-4437 Spring:

Quantity ... 1

Length under test force ... 33.27 mm (1.310 in)

Test force ... 248 ± 20 N (55.8 ± 4.5 lb)

Free length after test ... 36.17 mm (1.424 in)

Outside diameter ... 11.68 mm (.460 in)

(3) Torque for cap ... 110 ± 10 N·m (80 ± 7 lb ft)

(4) NOTE: Use as required to adjust HIGH setting. Set HIGH setting prior to adjusting LOW setting.

4T-4660 Shim:

Quantity ... 1

Thickness of one shim ... 0.08 mm (.003 in)

One shim changes pressure approximately ... 820 kPa (119 psi)

3J-7473 Shim:

Quantity ... 1

Thickness of one shim ... 0.12 mm (.005 in)

One shim changes pressure approximately ... 1367 kPa (198 psi)

3H-2549 Shim:

Quantity ... 5

Thickness of one shim ... 0.25 mm (.010 in)

One shim changes pressure approximately ... 2735 kPa (397 psi)

(5) NOTE: Use as required to adjust low setting. Set low setting after adjusting high setting.

4M-6978 Shim:

Quantity ... 4

Thickness of one shim ... 0.05 mm (.002 in)

One shim changes pressure approximately ... 547 kPa (79 psi)

4M-6979 Shim:

Quantity ... 2

Thickness of one shim ... 0.13 mm (.005 in)

One shim changes pressure approximately ... 1367 kPa (198 psi)

4M-6980 Shim:

Quantity ... 6

Thickness of one shim ... 0.25 mm (.010 in)

One shim changes pressure approximately ... 2735 kPa (397 psi)

4T-4659 Shim:

Quantity ... 5

Thickness of one shim ... 0.80 mm (.032 in)

One shim changes pressure approximately ... 8760 kPa (1270 psi)

(6) Torque for valve group ... 135 ± 10 N·m (100 ± 7.4 lb ft)

Attachment Control Valve

(1) Torque for plug ... 200 ± 15 N·m (150 ± 11 lb ft)

(2) 5H-2341 Spring:

Length under test force ... 50.8 mm (2.00 in)

Test force ... 3.4 to 3.8 N (.75 to .87 lb)

Free length after test ... 63.5 mm (2.50 in)

Outside diameter ... 24.61 mm (.969 in)

(3) Torque to install relief valves ... 80 ± 4 N·m (60 ± 3 lb ft)

(4) 5J-9089 Spring:

Length under test force ... 42.9 mm (1.69 in)

Test force ... 105.0 ± 6.7 N (24.00 ± 1.50 lb)

Free length after test ... 106.9 mm (4.21 in)

Outside diameter ... 39.1 mm (1.54 in)

(5) Torque for bolt ... 55 ± 4 N·m (40 ± 3 lb ft)

Relief Valve For Attachment Cylinders

Pressure setting ... 32 600 + 600 - 100 kPa (4732 + 87 - 14.5 psi)

At a flow of ... 38 ± 2 liter/min (10 ± .5 U.S. gpm)

(1) 5J-9103 Spring (outer);

Length under test force ... 52.2 mm (2.06 in)

Test force ... 639 to 756 N (143.6 to 169.8 lb)

Free length after test ... 63.8 mm (2.51 in)

Outside diameter ... 19.84 mm (.781 in)

(2) 5J-9104 Spring (inner):

Length under test force ... 52.2 mm (2.06 in)

Test force ... 194 to 227 N (43.5 to 51.1 lb)

Free length after test ... 65.0 mm (2.56 in)

Outside diameter ... 11.12 mm (.438 in)

(3) Torque for nut ... 21 ± 2 N·m (15 ± 1 lb ft)

(4) Torque for plug ... 65 ± 5 N·m (48 ± 4 lb ft)

Main Relief Valve (Dual Pressure)

LOW Pressure setting ... 21 400 ± 350 kPa (3100 ± 50 psi)

At a flow of ... 124 ± 6 liter/min (33 ± 1.6 U.S. gpm)

HIGH Pressure setting ... 24 000 ± 350 kPa (3485 ± 50 psi)

At a flow of ... 124 ± 6 liter/min (33 ± 1.6 U.S. gpm)

NOTE: The HIGH pressure setting should always be set first and then the LOW pressure setting.

1. Final installation tighten to ... 2.85 ± 0.50 N·m (25 ± 5 lb in)

2. Final installation tighten to ... 108 ± 7 N·m (80 ± 5 lb ft)

(A) Main Relief valve (dual pressure)

(B) Stage 2 adjuster (HIGH setting).

(C) Stage 1 adjuster (LOW setting).

Caterpillar Information System:

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