Napa 791-6402 Manual Del Usuario página 4

Operating ManUal & parts list fOr 791­6402 Operating ManUal & parts list fOr 791­6402
prOper stOrage
It is recommended that this jack be stored in a dry location with all wheels touching the ground on a relatively level surface.
trOUbleshOOting
Important: Service jacks are self-contained devices used for lifting, but not sustaining, a partial vehicular load. In accordance with
ASME-PALD standard, section 10-4.1.2 Load Sustaining Test: "A load not less than the rated capacity...shall not lower more than
1/8" (3.18mm) in the first minute, nor a total of .1875" (4.76mm) in 10 minutes." Leak down within this range is considered normal
operation and is NOT a warrantable defect.
791-6402
sOlUtiOn
The release valve is not closed. Turn the valve clockwise tightly.
If this does not work, remove handle, lubricate handle
receptacle and handle end, then retry.
Low on hydraulic fluid. Refill the jack to the correct level of
hydraulic fluid, using an approved hydraulic fluid or jack oil.
Pump seals or back-up ring may be defective. Clean hydraulic fluid
passages, replace seals and refill hydraulic fluid.
(Must be serviced by qualified service center)
The hydraulic system has trapped air.
Open the release valve, pump handle rapidly (4) full strokes
to purge air, close release valve.
Return spring is broken or linkages are binding. Replace spring if
broken. Grease pivot shaft and all lift arm linkages.
Discharge ball is not sealing hydraulic system and oil may be dirty.
Manually flush hydraulic system. Open the release valve, as required,
to raise and lower the lift arm. Manually raise
and lower lift arm.
4 12/13/06