Engine Performance - Test - Engine Speed
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| Required Tools | ||
|---|---|---|
| Part Number | Description | Qty |
| 1U-6602 | Photo-Tachometer | 1 |
- Position the machine on level ground.
- Stop the engine.
- Install a piece of reflective tape on the fan or a pulley on the engine.
- Start the engine.
- Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).
- Read the engine speed display (rpm) on the photo-tachometer. Refer to Table 2 for the specifications for engine speed at the desired engine operation.
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| Engine Speed | |||
|---|---|---|---|
| Item | Specification | ||
| 303C CR | 303.5C CR | ||
| High Idle (1) | 2400 - 2500 rpm | 2500 - 2600 rpm | |
| Low Idle (1) | 1130 - 1230 rpm | 1150 - 1250 rpm | |
| Auto Idle (1) | 1130 - 1230 rpm | 1150 - 1250 rpm | |
| Engine speed with load (2) | 2300 rpm (3) | 2400 rpm (3) | |
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| ( 1 ) | No load |
| ( 2 ) | Pressure is relieved from both pumps. |
| ( 3 ) | Minimum RPM |
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