Important vibration of drifter hoses
P2 hose : Deflated or punctured HP accumula
LP P2 hoses : Deflated or punctured LP accu
Overheating on drifter front part
- Air pressure reducer.
- Feed pressure if too low.
Coupling sleeve overheating, important
Feed pressure too low.
vibration level or erratic motion.
Increase feed pressure.
If unsuccessful, check :
- Bit wear
- Flushing (insufficient)
- Rubbing of drifter cradle on guide
- Feed motor if internal leak.
Rotation speed irregular or too low.
If rotation back to normal while drilling in
manual mode, check rotation circuit relief valve
If still irregular while drilling in manual mode,
check the drifter rotation motor for internal leak.