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Page 5SKU 91039
(A37)
(A39)
(X)
REV 04e
7. Place vehicle stands, or other support devices under the equipment before attempting
to do any work in or around it.
Caution: Avoid rapid descent to avoid spilling of load. Turn the Handle slowly.
8. Slowly and carefully lower the load by turning the Handle counterclockwise in
extremely small increments.
9. When finished using the Jack, perform maintenance on it, and store the Jack in a dry
location.
Maintenance
General
Periodically lubricate the Jack as described below.
1. Lubricate the joints and Ram (A5) with a light oil as needed.
2. Remove Handle and grease the lower end of the Handle where it rotates in the
Handle Base (29).
3. Oil all lift arm linkages, front wheels, and rear casters.
4. Clean the outside of the Jack with a dry, clean cloth.
5. If the Jack is exposed to moisture, wipe dry with a clean cloth and lubricate.
6. Store Jack with piston Ram (A5) withdrawn (Saddle down), and in a clean and dry
location.
Purging Air from the Hydraulic System
Air bubbles can become trapped inside the hydraulic system thereby reducing the efficiency
of the Jack. Purge the air from the system if lift efficiency drops.
1. Turn the Handle 1-1/2 turns counterclockwise.
2. Remove the Breathing Screw (A37) by turning it
counterclockwise.
3. Rapidly pump the Handle assembly several times to
purge the air from the hydraulic system.
4. Close the release valve by turning the Handle
completely clockwise.
5. Replace and tighten the Breathing Screw.
6. If efficiency is still low, remove Oil Plug (A39), and top off
fluid reservoir in the Aluminum Base (A13) with hydraulic oil.
7. Replace the Oil Plug (A39) and repeat steps 1 ~ 5, above.
8. Wipe up any hydraulic oil overflow with a cloth.
9. Test the Jack as described under Operation, step 1 on page 4.