Emergency Stop
Safety System
A0.04
M20/M25/M32/M43
en / 15.12.2010 AA033984 2/5
1. Overspeed condition
Emergency stop due to excessive rpm.
1.1 How high was the maximum rpm before emergency stop was triggered?
1.2 Why did engine go into an overspeed condition?
Check:
• Check if emergency stop safety device is operational.
• Check free operation of adjustment shaft and joint
• Check every single regulator rack of fuel pumps in both directions for proper operation by
pulling and pressing.
• Checking governor drive.
• Verification of possible out of calibration of actuator (if fitted).
1.3 Contact your Caterpillar Service.
2. Lube oil (lube oil pressure, lube oil temperature)
2.1 Emergency stop due to lack of lube oil
Checks:
• Visual inspection of engine.
• Lube oil pump drive:
- Check gears for damage or loss.
• Check lube oil pressure switch.
• Check lube oil filter for metal chips.
• Check oil sump and piping for leaks and cracks.
2.2 Contact the Cater
pillar Service.
NOTE
The following checks may be of assistance during troubleshooting and permit identi-
fication of root causes of an emergency stop. However, they cannot cover the entire
spectrum of possible causes.
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