Service Manual
| Simpro Multi-Tip | v40.0 | June 2018 | Page 14
5
Hydraulic Powerpack
5.1
General Description
The motor, pump, oil tank, and all control valves are mounted into one integral unit, referred to
as the ‘powerpack’.
The control valves are: check, pressure-relief, and solenoid-operated lowering.
The power-packs are very reliable and long-lasting, and no regular maintenance is required.
Possible faults include:
I.
Foreign matter in the lowering valve (symptoms
–
raising slowly or not at all, coming back
down without pushing the Lower button)
II.
Blocked suction strainer (raising slowly or not at all, noisy operation)
III.
Worn shaft or shaft seal (slow lifting, noisy operation, oil foaming)
IV.
Low oil level (normally only following an oil leak)
V.
Worn brushes
There is an oil-level gauge on the side of the main box; the level should be approximately in line
with the upper indicators when the cradle is fully lowered.
5.2
Removal and Refitting
I.
Ensure the cradle is fully lowered.
II.
Loosen the screws holding the outer cover and remove it.
III.
Make note of the wiring connections to the motor and disconnect. Undo the retainer nut
holding the lowering solenoid coil on and remove it.
Hydraulic
Powerpack
•
Note the oil
reservoir, motor,
and control valves
