Schwing SP 305, Operation Manual

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Maintenance
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49
Operation Manual - SP 305
Annual maintenance
Change hydraulic oil for age reasons
Change hydraulic oil if you haven’t already done it
because of the weather. The same filling rules that
apply to adding hydraulic oil apply to filling the tank
after draining and cleaning. To change the oil:
1. The engine must be shut off. Put the key in your
pocket.
2. The oil should be cool. This is for safety reasons.
Do not change oil that is above 120
°
F (50
°
C).
3. Drain the old oil into barrels or another waste oil
receptacle. The oil can be pumped out of the
inspection cover on the top of the tank or drained
out of the bottom of the tank (Figure 35).
4. Once the oil is drained, clean the tank through the
inspection covers using cleaning solvent and lint
free rags. DO NOT USE GASOLINE! Remove all
of the silt from the bottom of the tank.
5. Close the drain, if open. Refill by pumping new oil
out of the barrels with a filter cart. If no cart is
available, rent one. REMEMBER! NEW OIL IS
NOT CLEAN ENOUGH TO INSTALL IN YOUR
UNIT. If you ignore this step, you may begin
having trouble with pumps and valves immediately
or within the first few days. See the information at
the beginning of this chapter for specific
information about hydraulic oils that are approved
for use in Schwing machines.
6. Change the main return filter before restarting the
unit (Figure 35).
In s pection cover
Filler c a p
t a nkfill.ep s
tankdr
ain.eps
Drain cock
PHfilter.eps
Filter
Element
Dirty Filter
Indicator
Figure 35
Change hydraulic oil
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