Lubrication Digger Derrick EEC-0173 V1.0
Lubrication
G. Brush or spray grease on each gear tooth. Note: Swing cover must be removed.
H. Apply approx. 3 pumps of grease.
I. See “Tulsa Winch Swing Drive Service Manual” for complete lubrication and oil
changing directions.
J. Remove doors to expose linkage and replace after oiling.
K. Fittings are on outrigger cylinders. Apply approx. 3 pumps of grease to each fitting
on wear pad. Note: There are 4 fittings per side-two on the top, front of tube and two
on the bottom, rear of tube.
L. When checking the level on the hydraulic tank, the boom must be retracted and
stowed and all outriggers and stabilizers must be fully retracted. Add hydraulic oil as
required to keep the level on the sight gauge between the high and low marks. Use
high quality ISO Grade 32 hydraulic fluid with a viscosity index greater than
100.
M. Check daily and periodically throughout day. Replace the element when the gauge
reading reaches 25 PSI with warm oil and the engine at high RPM. Note: The filter
has a bypass that opens when the pressure exceeds 25 PSI. Operating the crane
when the filter is bypassing may damage the pump, valves and hydraulic system.
N. Replace at earlier intervals if required. Do not clean and reuse.
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