Maintenance; Adding Oil; Changing Oil - WilTec QYL12 Operation Manual

LOWERING
1) Raise load enough to carefully remove jack stands.
2) Insert handle onto release valve and slowly turn the handle counterclockwise, but not more than
1/2 turn. If load fails to lower, carefully transfer the load to another lifting device and jack stands.
Carefully remove the affected jack, and then the jack stands. Lower the load again by slowly turn -
ing the release valve no more than 1/2 turn.
CAUTION: Be sure all tools and personnel are clear before lowering the load. Dangerous dynamic
shock loads are created by quickly opening and closing the release valve while the load is being low-
ered. The resulting overload may cause hydraulic system failure which could cause severe per-
sonal injury and/or property damage.
3) After removing jack from under the load, push the ram and handle sleeve down to reduce expo-
sure to rust and contamination.

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.

ADDING OIL

1) With saddle fully lowered and pump piston fully depressed, set jack in its upright level position and
remove the oil filler plug.
2) Fill until oil is level with the filler plug hole and reinstall the oil filler plug

CHANGING OIL

For best performance and longest life, replace the complete fluid supply at least once a year.
1) With saddle fully lowered and pump piston fully depressed remove the oil filler plug.
2) Lay the jack on its side and drain the fluid into a suitable container.
Note: Dispose hydraulic fluid in accordance with local regulations.
3) Fill with good quality jack oil. Reinstall oil filler plug. We recommend MOBIL DTE 13 or equivalent.
LUBRICATION
1) A coating of light lubricating oil to pivot points, axles and hinges will help to prevent rust and as-
sure that wheels, casters and pump assemblies move freely.
2) Periodically check the pump piston and ram for signs of rust or corrosion. Clean as needed and
wipe with an oily cloth.
CAUTION: NEVER use sandpaper or abrasive material on these surfaces.
3) When not in use, store the jack with pump piston and ram fully retracted.
© by WilTec Wildanger Technik GmbH
http://www.WilTec.de
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