Product Manual

TROUBLESHOOTING
5
MAINTENANCE
Important: Use only a good grade hydraulic jack oil.
Avoid mixing different types of fluid and Never use
brake fluid, turbine oil, transmission fluid, motor oil or
glycerin. Improper fluid can cause failure of the jack and
the potential for sudden and immediate loss of load. We
recommend Hein-Werner hydraulic jack oil HW93291
or equivalent.
Adding Oil
1. With saddle fully lowered, set jack in its upright,
level position. Locate and remove oil filler screw. It
may be necessary to remove cover plate on model
HW93733.
2. Fill with oil until just below the rim of the oil filler hole.
Reinstall the oil filler screw.
Changing Oil
For best performance and longest lift, replace the
complete fluid supply annually.
1. With saddle fully lowered, and pump piston fully
depressed, remove oil filler screw. It may be necessary
to remove cover plate on model HW93733.
2. Lay the jack on its side and drain the fluid into a
suitable container.
Note: Dispose of hydraulic fluid in accordance with local
regulations.
3. Set jack in its level, upright position and fill with oil
until just below the rim of the oil filler hole. Reinstall
the oil filler screw.
Lubrication
1. A periodic coating of light lubricating oil to pivot points,
axles and hinges will help to prevent rust and assure
that wheels move freely and the pump functions
smoothly.
2. When used on a daily basis, air pump should be
internally lubricated before each use. Use only good
quality air tool lubricant such as #630 - AAA Lubriplate.
If no inline oiler is used, pour a teaspoon of air tool oil
into the inlet of the air control valve. Simply operate
the jack using the air feature in order to fully distribute
the oil.
Cleaning
Periodically inspect the ram for signs of rust or corrosion.
Clean as needed and wipe with an oily cloth.
Note: Never use sandpaper or abrasive material on
these surfaces!
Storage
When not in use, store the jack with ram fully retracted.
REPLACEMENT PARTS
(refer to page 6 thru 11)
Not all components of the jack are replacement items, but
are illustrated as a convenient reference of location and
position in the assembly sequence. When ordering parts,
give model number, part number and parts description.
Call or write for current pricing: Hein-Werner Customer
Support, 10939 N. Pomona Ave. Kansas City, MO 64153.
Phone: [phone];
E-mail: [e-mail]
Symptom Possible Causes Corrective Action
Jack will not lift load
• Release valve not tightly closed
• Overload condition
• Air supply inadequate
• Ensure release valve tightly closed
• Remedy overload condition
• Ensure adequate air supply
Jack will lift, but not maintain
pressure
• Release valve not tightly closed
• Overload condition
• Hydraulic unit malfunction
• Ensure release valve tightly closed
• Remedy overload condition
• Contact Tech. Service
Jack will not lower after unloading • Reservoir overfilled
• Linkage binding
• Ensure load is removed, then drain
fluid to proper level
• Clean and lubricate moving parts
Poor lift performance • Fluid level low
• Air trapped in system
• Ensure proper fluid level
• With saddle fully lowered, remove
oil filler plug to let pressurized air
escape, then reinstall oil filler plug
Jack will not lift to full extension • Fluid level low • Ensure proper fluid level