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Maintenance &
Troubleshooting
ENGINE OIL
Your engine comes to you installed, full of oil and has been certified for use on this machine. After the
initial 10 hour break in period, drain oil and re-fill with recommended oil for your machine. Please
consult the engine manual for specific oil grade and capacity.
HYDRAULIC OIL & FILTERS
At Wolfe Ridge MFG, your machine comes ready to use with all hydraulic systems filled with AW-32/
ISO-32 hydraulic oil. There is room for oil expansion, do not fill tanks completely full. Only fill to Full/
Cold line or about 150 degree mark on sight gauge.
Hydraulic filters should be replaced annually or every 100 hours of run time. Only use filters designed
for Hydraulic systems at 10 micron filtration. Contact your servicing dealer or Wolfe Ridge MFG for
the correct filter for your application.
HYDRAULIC OIL & FILTERS
At Wolfe Ridge MFG, your machine comes ready to use with all hydraulic systems filled with AW-32/
ISO-32 hydraulic oil. There is room for oil expansion, do not fill tanks completely full. Only fill to Full/
Cold line or about 150 degree mark on sight gauge.
PUSH BLOCK SLIDES
At Wolfe Ridge MFG, all machines come standard with replaceable Delrin slides. This material is
self-lubricating and are very easy to replace with new pieces. If your pusher becomes loose, with more
than ¼” of play side to side, it is time to replace slides. You should have an extra set of replacement
slides in the owner’s manual canister. When installed, please contact your servicing dealer or Wolfe
Ridge MFG to order more. These parts are low cost and are provided to you at no charge for the first
year of use. To replace slides, just remove bolts and replace with new parts orientated the same way.
Replaceable push block slides
Summary of Contents for 28HDI
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