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| Illustration 1 | g01618926 |
Relief valve locations (1) Sequence valve (left travel brake) (2) Sequence valve (right travel brake) (3) Pressure reducing valve (left travel brake) (4) Pressure reducing valve (right travel brake) (5) Relief valve (left travel forward) (6) Relief valve (left travel reverse) (7) Relief valve (right travel forward) (8) Relief valve (right travel reverse) | |
| Relief Valve | Specifications | |
|---|---|---|
| New Rebuilt (2) |
||
| (1) Sequence valve (left travel brake) | 2500 kPa (365 psi) | |
| (2) Sequence valve (right travel brake) | ||
| (3) Pressure reducing valve (left travel brake) | 6000 kPa (875 psi) |
|
| (4) Pressure reducing valve (right travel brake) | ||
| (5) Relief valve (left travel forward) | 35000 kPa (5100 psi) |
|
| (6) Relief valve (left travel reverse) | ||
| (7) Relief valve (right travel forward) | ||
| (8) Relief valve (right travel reverse) | ||
| ( 2 ) | A New specification is the performance that can be expected for a new machine. A Rebuild specification is the performance that can be expected after rebuilding the components of a system. |
Note: Use a pressure gauge for adjustment.
Note: Normal operations of the engine and pumps are necessary for the pressure adjustments. If the results of the pressure adjustment are not correct, then the engine and the pump characteristic curve needs to be checked. Slow output flow from the pump is an indication of air in the hydraulic system. Make sure that no air is present in the hydraulic system. Refer to Testing And Adjusting, "Main Hydraulic Pump Air - Purge".