Worksheets
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| Steering Pressure Test | |||
|---|---|---|---|
| Machine Model | DateToday | ||
| Machine Serial Number | Machine Hours | ||
| ECM Flash File | Flash File Date |
||
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| Visual Checks | |
|---|---|
| Oil Level | Oil viscosity |
| Air or water in the oil | Examination of oil filter |
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| Test | Specifications | Actual |
|---|---|---|
| Steering oil temperature during the test | 60° C (140° F) 121 °C (250 °F) |
|
| Cut out pressure at low idle | 24115 ± 345 kPa (3500 ± 50 psi) |
|
| Cut-in pressure at low idle | 22050 ± 345 kPa (3200 ± 50 psi) |
|
| Cycle time of the cut out pressure to the cut-in pressure at low idle | Greater than 30 seconds | 1. 2. 3. Average |
| Cycle time at high idle while the steering wheel is turned at one revolution per second. Release the brakes. Turn the steering wheel from the left to the right and then turn the steering wheel back to the left. | 11 to 13 seconds | 1. 2. 3. Average |
| Release the brakes and turn the steering wheel from stop to stop at high idle. Record the number of turns of the steering wheel. Turn the steering wheel 3.5 to 4.5 turns at one revolution per second. | Left to right 1. 2. 3. Average |
Right to left 1. 2. 3. Average |
| Pump low standby pressure at low idle | 1724 to 3448 kPa (250 to 500 psi) (1) or 0 to 1380 kPa (0 to 200 psi) (2) |
|
| High-pressure cutoff valve (Pressure and flow compensator valve) at high idle The accumulator should be charged and the sensor on the accumulator should be disconnected. |
28200 ± 1000 kPa (4100 ± 150 psi) |
|
| Backup relief valve pressure at low idle (1) | 27580 ± 345 kPa (4000 ± 50 psi) |
|
| Record the pressure setting of the steering check and relief valve while the steering wheel is turned to the left. (1) | 28000 ± 1000 kPa (4062 ± 145 psi) |
|
| Record the pressure setting of the steering check and relief valve while the steering wheel is turned to the right. (1) | 28000 ± 1000 kPa (4062 ± 145 psi) |
|
| Nitrogen charge pressure for one of three steering accumulators | 7230 ± 345 kPa (1050 ± 50 psi) at 21 °C (70 °F) (2) |
|
| Nitrogen charge pressure for two of three steering accumulators | 7230 ± 345 kPa (1050 ± 50 psi) at 21 °C (70 °F) (2) |
|
| Nitrogen charge pressure for three of three steering accumulators | 7230 ± 345 kPa (1050 ± 50 psi) at 21 °C (70 °F) (2) |
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| ( 1 ) | JSM1-168 |
| ( 2 ) | JSM169-UP |
| ( 1 ) | Use a bench test to determine the pressure setting for this valve before you perform any adjustments. |
| ( 2 ) | The specification for this pressure depends on the ambient temperature. Refer to the table in Testing and Adjusting, "Steering Accumulator - Test and Adjust". |
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