4
Use
only
Mobil DTE 13M or equivalent
hydraulic jack oil. Improper fluid can cause
premature failure of the jack and the potential for sudden
and immediate loss of load.
TROUBLeSHOOTInG
Symptom
Possible Causes
Corrective Action
Jack will not lift load
• Release valve not tightly closed
• Load is too heavy
• Ensure release valve tightly closed
• Consider higher capacity jack
Jack will lift, but not maintain
pressure
•
Release valve not tightly closed
• Hydraulic unit malfunction
•
Ensure release valve tightly closed
• Discontinue use, contact Mac Tool
Technical Service
Jack will not lower after unloading • Reservoir overfilled
• Linkages binding
• 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 ram fully retracted, remove oil
filler plug/screw to let pressurized
air escape. Reinstall oil filler plug
Will not lift to full extension
• Fluid level low
• Ensure proper fluid level
Lubrication
A periodic coating of light lubricating oil to pivot points,
axles and hinges will help to prevent rust and assure that
wheels, casters and pump assemblies move freely.
Cleaning
Periodically check the pump piston and 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 saddle fully
lowered.
1. With saddle fully lowered set jack in its upright, level
position. Remove oil filler plug.
2.
*
Fill until oil
nearly
covers the inner cylinder as seen
from the oil filler hole. Reinstall the oil filler plug.
Changing oil
For best performance and longest life, replace the
complete fluid supply at least once per year.
1. With saddle fully lowered, remove the oil filler plug.
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.
*
Fill until oil
nearly
covers the inner cylinder as seen
from the oil filler hole. Reinstall the oil filler plug.
!
It is difficult to confirm the correct oil level by simply
looking into the oil reservoir after removing the oil filler
plug.
*Correct oil level
allows the saddle to reach its
advertised maximum height and its advertised minimum
height.
Too
much
oil will not allow the saddle to lower
completely.
Too
little
oil will not allow the saddle to raise
completely.
MAInTenAnCe
Adding oil
•
•
RePLACeMenT PARTS
(refer to page 5, 6) 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 description below. Call or write for
current pricing: Mac Tools Inc. 505 N. Cleveland Ave.
Suite 200, Westerville, OH 43082.
Tel: 1-800-MAC-TOOL (622-8665)
