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OWNER'S MANUAL cont'd
PREVENTATIVE MAINTENANCE
This is the safety alert symbol used for the PREVENTATIVE MAINTENANCE section of this manual to alert you to potential
personal injury hazards. Obey all instructions to avoid possible injury or death.
IMPORTANT: Any jack found to be defective as a result of worn parts due to lack of lubrication, or hydraulic system
contaminated with water, rust and/or foreign materials is not eligible for warranty consideration.
1.
Always store the jack in a well protected area where it will not be exposed to inclement weather, corrosive vapors, abrasive
dust, or any other harmful elements. The jack must be cleaned of water, snow, sand, grit, oil, grease or other foreign matter
before using.
2.
The jack must be lubricated periodically in order to prevent premature wearing of parts. A general purpose grease must be
applied to all pivot points with exception to hydraulic components. Do not lubricate any portion of the lift saddle and make
sure the saddle is free from grease, any kind of lubricant, or debris before using the jack.
3.
It should not be necessary to refill or top off the reservoir with hydraulic fluid unless there is an external leak. An external leak
requires immediate repair which must be performed in a dirt-free environment by qualified hydraulic repair personnel who are
familiar with this equipment. Authorized Service Centers are recommended. IMPORTANT: In order to prevent seal damage and
jack failure, never use alcohol, hydraulic brake fluid, or transmission oil in the jack. Use hydraulic jack oil.
4.
Every jack owner is responsible for keeping the jack label clean and readable. Use a mild soap solution to wash external surfaces
of the jack but not any moving hydraulic components.
5.
Do not attempt to make any hydraulic repairs unless you are a qualified hydraulic repair person that is familiar with this equipment.
TROUBLESHOOTING
PROBLEM
1. Unit will not lift rated load.
2. Unit will not sustain rated load or feels "spongy" under rated
load.
3. Unit will not lift to full height.
4. Handle tends to raise up while the unit is under rated load.
5. Unit still does not operate.
4412AH, 4420AH
ACTION
Purge air from hydraulic system by following procedure under
SETUP.
Purge air from hydraulic system as above.
Purge air from hydraulic system as above.
Pump the handle rapidly several times to push oil past ball valves in
power unit.
Contact Sunex authorized hydraulic service center.
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2/3/20
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