Maintenance and servicing – General Machine Products 32481 Power Pack User Manual
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Page 9 of 16
General Machine Products Co., Inc.
5. MAINTENANCE AND SERVICING
To insure reliable service from your power pack, we recommend the unit be
completely serviced every 6 months.
Hydraulic Circuit
The circuit should be drained off and replaced with the appropriate grade of hy-
draulic oil (refer to 3.0 specification for details) or
equivalent until it is almost to the top of the sight glass
when the power pack is on level ground. The circuit is
fitted with two filters, only one of these requires replac-
ing. Replace the Return Line Filter when the filter gauge
is in the red (indicating higher return pressure - i.e.,
clogged filter). The gauge is found on the side of the fil-
ter housing.
Gas Engine
Refer to manufacturer’s manual.
1. Unscrew the return
line filter top cap with a
24mm box wrench or
socket and remove.
2. Remove old filter
and replace with the
new one.
3. Replace the top cap
making sure not to cross
the thread. Check for
leaks after tightening.
Return Line Filter Replacement