Craftsman 50136 - Manual (Page 6)

6
MAINTENANCE
MAINTAINING OIL LEVEL
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 Mobil DTE13M
or equivalent.
ADDING OIL
• Position the jack on level ground and fully
lower the saddle. (Ram will be all the way
in). Remove oil filler plug from the reservoir
(see Fig. 3 & 4).
• Oil should be filled to the level of about 3/
16” above the inner cylinder as seen from
the oil filler hole. If low, add oil as needed.
• Re-install oil filler plug. The jack is now
ready to use.
LUBRICATION
• Add lubricating oil to all moving parts as
needed.
PREVENTING RUST
• Check ram and pump piston (see Fig. 4)
every few months for any signs of rust or
corrosion. Clean as needed by wiping with
an oily cloth.
• When not in use, ALWAYS store jack with
saddle lowered all the way down.
FIG. 4
ANNUAL INSPECTION
To ensure that it is in optimum condition,
annual inspection of the jack at a Sears
Service Center is recommended.
REPLACING OIL
• To drain oil, with saddle fully lowered,
remove oil filler plug and open release
valve. Turn jack over and drain old oil out
through the oil filler hole and into a suitable
container.
N o t e : D i s p o s e o f h y d r a u l i c o i l i n
accordance with local regulations.
• Refill with new oil through the oil filler hole.
DO NOT allow dirt or foreign material to
enter the hydraulic system when filling.
• After refilling, remove any air from the
hydraulic system by opening the release
valve and rapidly pumping the jack handle
several times.
• Re-install oil filler plug and the jack is ready
to use.
Release valve
Oil filler plug
Oil filler hole
Pump plunger
Ram all way in
Cylinder
Reservoir
Proper oil lever