Atlas Copco HC 150

Oil escapes from the hydraulic motor (rotor and rotating
mechanism)
ByRemedyCause
Atlas Copco Customer
Center/Dealer in your area
Workshop
Seal the motor
Replace the motor
Motor damaged
Oil leaks from hydraulic ports
ByRemedyCause
Carrier driver
Tighten the cap nuts (see section Screw
connections/Tightening torques)
Cap nuts loose
Oil escapes from parts of the hydraulic attachment installation
(connecting fittings, hoses etc.)
ByRemedyCause
Carrier driver or workshopTighten the connecting fittings; replace any defective parts;
check the hydraulic attachment installation, replace any
damaged parts, only use original parts (see section Screw
connections/Tightening torques)
Connecting fittings are loose
Oil escapes from the hydraulic attachment
ByRemedyCause
Workshop
Tighten the covers see chapter (Screw
connections/Tightening torques)
Covers are loose
Workshop
Replace the O-rings (see chapter Replacing rotor and/or O-
rings of covers)
O-rings of covers defective
Operating temperature too high
ByRemedyCause
Carrier driver or workshopCheck oil level and top up oilOil level in tank too low
Atlas Copco Customer
Center/Dealer in your area
Check and correct motor speed of carrier
Drive the pump
Carrier pump delivery too high; a constant
volume of oil is squirted out of the pressure
relief valve
Workshop or Atlas Copco
Customer Center/Dealer in
your area
Fit new type-tested pressure relief cartridges or a more
precise pressure-limiting valve
Pressure relief valve defective or valve with
poor characteristics
The hydraulic compactor cannot be rotated
ByRemedyCause
Atlas Copco Customer
Center/Dealer in your area
Replace the defective partsRotation motor/transmission defective
Carrier driver or Service
Department of carrier
manufacturer
Check the »Rotate gripper« function of the carrier (Observe
the Operating Instructions for the carrier)
Carrier defective
© 2014 Construction Tools EOOD | No. 3390 5121 01 | 2014-11-19
Original instructions
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HC 150, 350, 450, 850, 1050, 1055TROUBLESHOOTING