Hyundai HDFN35T Operation And Maintenance Manual page 98

TROUBLESHOOTING
SYMPTOM
High oil temperature
Excessive noise
Oil escaping from breather
CAUSE
- Improper oil level (high or low)
- Bearing failure
- Improper alignment
- Oil level too high
- Wrong type of oil
- Clogging the breather holes
REMEDY
- Check and fill or drain with
proper oil to the correct level.
- Overhaul marine transmission
- Check alignment of engine and
transmission and transmission
output flange to propeller shaft.
Correct as necessary.
- Adjust oil level
- Drain and refill with
recommended oil
- Remove the foreign substance in
the oil gauge
66