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The power train/hydrostatic transmission and the hydraulic system on this machine use the hydraulic tank as a common sump. When the oil in the power train/hydrostatic transmission and hydraulic system gets hot, it causes the air to expand and build up pressure in the hydraulic tank. Pressure can remain in the hydraulic tank after the engine and pumps are stopped. Personal injury can occur if pressure is not released before any service is performed on the power train/hydrostatic transmission or the hydraulic system. To prevent possible injury, remove the cap from the oil filler tube before any fitting, hose, or component in the power train/hydrostatic transmission or hydraulic system is loosened, tightened, removed, and/or adjusted. The cap must be replaced when the tests and/or the adjustments are completed. The bucket and the other attachments must always be flat on the ground before service is performed. When it is necessary for an attachment to be raised while tests and/or adjustments are being performed, be sure the correct supports are in place. In the case of the bucket, it must be in the full DUMP position. Move the machine to a location away from the travel of other machines. Wear the seat belt, and be sure that other personnel are not near the machine when the engine is running and tests or adjustments are being performed. |
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Required Tools
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| Illustration 1 | g00995348 |
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| Illustration 2 | g00995390 |
| Required Tools | ||||
| Tool | Item | Part Number | Description | Qty |
| A | A1 | 6V-9834 | Cap As | 1 |
| A2 | 6V-3966 | Fitting As | 1 | |
| B | B1 | 6V-4143 | Coupler | 2 |
| B2 | 6V-3989 | Fitting | 1 | |
| B3 | 8T-0854 | Pressure Gauge ( 1000 kPa (145 psi)) |
1 | |
| B4 | 177-7860 | Hose As | 1 | |
Tooling (A) must be manufactured. Drill and tap a 1/4 inch by 18 NPTF in cap (A1). Install fitting (A2) in the tapped hole.
Procedure
- Disconnect the transmission oil cooler inlet line. Collect any leaking oil in a suitable container. Install a plug on the end of hose assembly (1) .
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| Illustration 3 | g00995377 |
- Install tooling (A) in the line to the bypass filter (2). Install tooling (B) onto tooling (A) .
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| Illustration 4 | g00995385 |
- Run the engine at LOW IDLE.
- Record the pressure on the gauge (B3) .
The pressure should be between 310 and 450 kPa (45 and 65 psi).
Note: If the pressure is low, check the oil cooler bypass valve in the hydraulic tank.