3
SPECIFICATIONS
MAINTENANCE
Important
: Use only 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 premature failure of the jack and the potential
for sudden and immediate loss of load. We recommend
Williams 8H1G or equivalent.
Adding
1. With saddle fully lowered set jack in its upright, level
position. Locate and remove oil filler plug.
2
. Fill with oil even with the bottom of 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 set jack in its upright, level
position. Locate and remove 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 with oil even with the bottom of the oil filler hole. Reinstall
the oil filler plug.
Lubrication
A periodic coating of light lubricating oil to pivot points will
help to ensure that pump piston linkages move freely.
Note:
Never apply oil to saddle.
Cleaning
Periodically check the pump piston and ram plunger, and
saddle for signs of rust or corrosion. Clean as needed and
wipe with a clean, oil soaked rag.
Note:
Never use sandpaper or abrasive material on these
surfaces !
Storage
Store the jack with pump piston, ram plunger/saddle fully
lowered and release valve open, but never more than 1/2
turn. This will help prevent rust and corrosion to those critical
surfaces.
Figure 1 - Typical Mini Jack Components (3M05T75 shown)
OPERATION
Use of this device may require special skills and
knowledge. Read, understand, and follow
all
printed materials
provided with and on this device
before use
.
Raising the Ram Plunger
1. Locate and close release valve by turning handle
clockwise until firm resistance is felt to further thread
engagement.
2. Pump until load reaches desired height.
Immediately
secure with appropriately rated mechanical devices. It
is recommended you follow the load with cribbing and
blocking where practical.
Never allow personnel to work or pass under a load
until the load is secured by cribbing, blocking, or other
mechanical means.
Lowering
Make certain that all personnel are clear of the load
before lowering.
Control
the rate of descent of the load
at
all times
. The
more
you open the release valve, the
faster
the load descends.
1. Use the manufacturer's provided operating handle
to engage and slowly turn the release valve counter-
clockwise, but no more than 1/2 turn.
If the operating handle is damaged, operates abnormally,
or will not positively engage the release valve, immediately
discontinue use of the jack until a manufacturer's replacement
handle assembly can be acquired.
2. Push ram down and handle sleeve in to reduce exposure
to rust and contamination after removing jack from under
load.
!
!
!
!
Handle Assembly
Handle Sleeve
Saddle
Oil Filler Plug
Release Valve
Saddle Adapter
(for 3M05T75 &
3M05T150 only)
Ram Plunger
Model
Capacity
(ton)
Min. Height
(in)
Max. Height
(in)
Base Size
(LxW)
Weight
(lb.)
3M05T75
5
2 3/8
3 1/8
4 1/8" x 4"
4.6
3M05T150
5
3 3/8
4 7/8
4 1/8" x 4"
5.3
3M10T160
10
4 3/4
6 1/4
4 7/8" x 4 3/8"
12.6
3M20T160
20
5 1/8
6 3/4
5 3/8" x 4 3/4"
16.7
