User's Manual

5
MAINTENANCE
Important: Use only a good grade hydraulic jack oil.
Avoid mixing different types of fluid and NEVER use
brake fluid, turbine oil, transmission fluid, motor oil or
glycerin. Improper fluid can cause failure of the jack and
the potential for sudden and immediate loss of load. We
recommend Mobil 13M or equivalent.
Adding oil
1. Carefully remove hydraulic jack from crane.
2. With ram fully lowered and pump piston fully
depressed, set jack in its upright, level position.
Remove oil filler plug.
3. Fill with oil until just below the rim of the oil filler
plug hole. Reinstall the oil filler plug.
Changing oil
For best performance and longest life, replace the
complete fluid supply annually.
1. Carefully remove hydraulic jack from crane.
2. With ram fully lowered and pump piston fully
depressed, set jack in its upright, level position.
Remove oil filler plug.
3. Lay the jack on its side and drain the fluid into a
suitable container.
Note: Dispose of hydraulic fluid in accordance with
local regulations.
4. Set jack in its level upright position.
5. Fill with oil until just below the rim of the oil filler
plug hole. Reinstall the oil filler plug.
Lubrication
A periodic coating of light lubricating oil to pivot points,
axles and hinges will help to prevent rust and assure that
wheels, casters, and pump assemblies move freely.
Cleaning
Periodically check the pump piston and ram for signs of
rust or corrosion. Clean as needed and wipe with an oily
cloth.
Note: Never use sandpaper or abrasive material on
these surfaces !
Storage
1. When not in use, store the jack with pump piston
and ram fully retracted.
2. To transform the crane into storage position:
a. Remove lock pin (#24 on figure 2) from boom.
b. Lean hydraulic unit back against upright and
slowly lower the boom to rest against hydraulic
unit.
c. Remove bolts (#8 on figure 2) of left and right legs
of the crane.
d. Remove legs from crane and keep it in the leg
holder at each side of upright.
Figure 3 - Engine Crane Storage Position