SECTION 10
RECIRCULATION SYSTEM
Jan 2003
p. 10-5
05130497
WARNING
The breather is not a fill component, and must not be
used as a fill point.
Replace Hydraulic Oil
1. Drain the reservoir, by connecting the inlet hose of the oil filter/ transfer
pump to the drain valve. Open valve and pump oil to container.
2. Close hand valve, remove oil filter/ transfer pump inlet hose from hand
valve.
NOTE
Never assume a new drum of oil is free of damaging contaminants. Typically,
oil from a new drum does not meet the hydraulic system cleanliness
requirements. For this reason it is important to use the oil filter/ transfer
pump, which forces oil through the return filter into the reservoir.
3. Remove cap from fill port.
4. Connect oil filter/ transfer pump discharge to fill port. This will assure
clean filtered oil is pumped into the reservoir.
CAUTION
Oil must be filtered through an equivalent filter such as a
10 micron filter element or see filter element in figure 12 in
section 12. Failure to do so will cause damage to the
primary hydraulic components, voiding the warranty.
5. Check oil sight gage to assure proper fill level. Remove hose, cap fill port.
6. Remove the plug of the main hydraulic pump case and make sure the case
fills with oil. With the plug removed, head pressure from the reservoir will
force oil into the pump case.
7. Run pump following initial start-up procedure. This will assure the system
is filled.
8. Check oil sight gage. Add oil if necessary.
9. Disconnect oil filter/ transfer pump discharge hose, install fill port cap.
CAUTION
Failure to fill the pump case with oil will damage the pump
due to air becoming trapped inside.
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