OPERATING INSTRUCTIONS
WARNING: This double pump long ram is designed for lifting purposes only – not for
supporting loads. Do not load beyond its rated capacity.
IMPORTANT: It is possible that air has got into the hydraulic system causing poor
lifting performance. Purge any air from the system by fully opening the release valve
(turn handle counter-clockwise) then while holding the boom down operate the pump
handle rapidly several times.
TO RAISE LOAD: Close release valve by turning handle clockwise to a snug-tight posi-
tion. Do not over-tighten.
TO LOWER LOAD: Open release valve by turning handle counter-clockwise very
slowly. The speed of the lowering is controlled by how much the handle is turned.
NOTE: Before raising the legs to the storage position bolt (No. 6) and nut (No. 7) must
be inserted into the base support and tightened. If this procedure is not followed the
unit may fall over.
MAINTENANCE
IMPORTANT: When adding or replacing oil always use high grade hydraulic jack oil.
Avoid mixing different grades/types of oil. Do not use brake fluid, alcohol, glycerine,
detergent motor oil or dirty oil. Improper fluid can cause serious internal damage to
the ram.
When adding oil be very careful not to permit dirt or foreign matter to enter the sys-
tem. Check ram and plunger every 3 months for any signs of rust or corrosion. Clean
as needed and wipe with an oily cloth.
When not using the ram always leave the jib in the fully lowered position.
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