6A – 32 ENGINE MECHANICAL
COMPRESSION PRESSURE
MEASUREMENT
1. Start the engine and allow it to idle until the coolant
temperature reaches 70 – 80 °C (158 – 176 °F).
2. Remove the following parts.
• Leak off pipe
• Injection nozzle holder bracket
• Injection nozzle holder
3. Install the following parts.
• Set the adapter and compression gauge (SST) to
the No.1 cylinder injection nozzle hole.
• Injection nozzle holder bracket
Injection nozzle holder bracket Bolt Torque
N·m (kg·m /lb·ft)
37 (3.8/27)
Compression Gauge: 5-8840-2675-0
Adapter; Compression Gauge: 5-8531-7001-0
4. Turn the engine over with the starter motor and take
the compression gauge reading.
Compression Pressure MPa (kg/cm
2
/psi) at 200 rpm
Standard Limit
3.0 (31.0/441) 2.1 (21.7/309)
5. Repeat the procedure (Steps 3 and 4) for the
remaining cylinders.
If the measured value is less than the specified limit,
refer to “Troubleshooting” in this Manual.
F06XL056
901R100003
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