8760621
4 Ton Low Profile Floor Jack
V4.0
14
For technical questions call 1-800-665-8685
TROUBLESHOOTING
Visit a Princess Auto Ltd. location for a solution if the tool does not function
properly or parts are missing. If unable to do so, have a qualified technician
service the tool.
Problem(s)
Possible Cause(s)
Suggested Solution(s)
Jack will not lift
load.
1. The release valve is not
closed tightly.
2. Overloaded the jack.
3. Air is trapped in the
hydraulic system.
1. Close the release valve firmly.
2. Reduce load or use a jack with a
greater lift capacity.
3. Bleed air from the system.
Jack will lift, but
will not maintain
pressure.
1. Release valve is not closed
tightly.
2. Overloaded the jack.
3. Hydraulic unit is
malfunctioning.
1. Close the release valve firmly.
2. Reduce load or use a jack with a
greater lift capacity.
3. a. Replace the seals.
b. Have service technician repair
the jack.
Will not lower
after loading.
1. Reservoir is overfilled.
2. Linkages are binding.
3. Air is trapped in the
hydraulic system.
1. Drain oil to the proper level.
2. Clean and lubricate all moving
parts.
3. Bleed air from the system.
Poor lift
performance.
1. Hydraulic oil level is low.
2. Air is trapped in the
hydraulic system.
1. Add oil to the proper level.
2. Bleed air from the system.
Will not lift to
the max. height.
1. Air is trapped in the system.
2. Hydraulic oil level is too low.
1. Bleed air from the system.
2. Add oil to the proper level.
Summary of Contents for 8760621
Page 17: ...V4 0 4 Ton Low Profile Floor Jack 8760621 Visit www princessauto com for more information 17...
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Page 20: ...8760621 4 Ton Low Profile Floor Jack V4 0 20 For technical questions call 1 800 665 8685...
