- Load Haul Dump:
- R2900 (S/N: 5TW1-UP)
- R2900G (S/N: GLK1-UP; JLK1-UP)
The information in this article has changed. Replace this information with the following information.
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| Illustration 1 | g01334840 |
108-6428 Relief Valve
(1) Torque for the nut ... 50 ± 7 N·m (37 ± 5 lb ft)
(2) Torque for the valve body ... 65 ± 5 N·m (48 ± 4 lb ft)
(3) 4T-4942 Spring
- Length under test force ... 54.3 mm (2.14 inch)
- Test force ... 1246 ± 100 N (280 ± 22 lb)
- Free length after test ... 63.2 mm (2.5 inch)
- Outside diameter ... 15.75 mm (0.620 inch)
- Test force ... 1246 ± 100 N (280 ± 22 lb)
(4) Lubricate the bore with the lubricant that is being sealed.
For testing purposes, use oil at 49 ± 3°C (120 ± 5°F)
Flow rate ... 160 ± 5 L/min (42 ± 1 US gpm)
4T-4162 Relief Valve
(1) Torque for the nut ... 50 ± 7 N·m (37 ± 5 lb ft)
(2) Torque for the valve body ... 65 ± 5 N·m (48 ± 4 lb ft)
(3) 4T-2741 Spring
- Length under test force ... 58.7 mm (2.31 inch)
- Test force ... 240 ± 20 N (55 ± 4 lb)
- Free length after test ... 61 mm (2.4 inch)
- Outside diameter ... 15.75 mm (0.620 inch)
- Test force ... 240 ± 20 N (55 ± 4 lb)
(4) Lubricate the bore with the lubricant that is being sealed.
For testing purposes, use oil at 49 ± 3°C (120 ± 5°F)
Flow rate ... 38 ± 4 L/min (10 ± 1.0 US gpm)
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| Illustration 2 | g01027315 |
| Line Relief Valves (1) | |
| Relief Valve | Location |
| Tilt cylinder (head end) | A |
| Tilt cylinder (rod end) | B |
| ( 1 ) | For the part number and pressure setting of the line relief valves, refer to the specifications that follow. |
Note: The 108-6428 Relief Valve and the 4T-4162 Relief Valve preset pressures have changed for this application. Ensure the 108-6428 Relief Valve and the 4T-4162 Relief Valve are set to the following pressures.
(A) 108-6428 Relief Valve
- Pressure setting ... 24305 ± 345 kPa (3525 ± 50 psi)
(B) 4T-4162 Relief Valve
- Pressure setting ... 12775 ± 345 kPa (1850 ± 50 psi)