Front/Rear Axle Fluid - Jeep Grand Cherokee 2013 Operating Information Manual

With disc brakes, the fluid level can be expected
to fall as the brake linings wear. However, an
unexpected drop in fluid level may be caused by
a leak and a system check should be con-
ducted.
Refer to "Fluids, Lubricants, and Genuine Parts"
in "Maintaining Your Vehicle" for further informa-
tion.
WARNING!
• Use only manufacturer's recommended
brake fluid. Refer to "Fluids, Lubricants,
and Genuine Parts" in "Maintaining Your
Vehicle" for further information. Using the
wrong type of brake fluid can severely
damage your brake system and/or impair
its performance. The proper type of brake
fluid for your vehicle is also identified on
the original factory installed hydraulic mas-
ter cylinder reservoir.
WARNING! (Continued)
• To avoid contamination from foreign matter
or moisture, use only new brake fluid or fluid
that has been in a tightly closed container.
Keep the master cylinder reservoir cap se-
cured at all times. Brake fluid in a open
container absorbs moisture from the air re-
sulting in a lower boiling point. This may
cause it to boil unexpectedly during hard or
prolonged braking, resulting in sudden brake
failure. This could result in a collision.
• Overfilling the brake fluid reservoir can
result in spilling brake fluid on hot engine
parts, causing the brake fluid to catch fire.
Brake fluid can also damage painted and
vinyl surfaces, care should be taken to
avoid its contact with these surfaces.
• Do not allow petroleum based fluid to
contaminate the brake fluid. Brake seal
components could be damaged, causing
partial or complete brake failure. This
(Continued)
could result in a collision.

Front/Rear Axle Fluid

For normal service, periodic fluid level checks
are not required. When the vehicle is serviced
for other reasons the exterior surfaces of the
axle assembly should be inspected. If gear oil
leakage is suspected inspect the fluid level.
Refer to "Fluids, Lubricants, and Genuine Parts"
in "Maintaining Your Vehicle" for further informa-
tion.
Front Axle Fluid Level Check
The front axle oil level needs to be between 1/8
in (3 mm) below the bottom of the fill hole and
the bottom of the fill hole.
The front axle fill and drain plugs should be
tightened to 22 to 29 ft lbs (30 to 40 N·m).
CAUTION!
Do not over tighten the plugs as it could
damage them and cause them to leak.
Rear Axle Fluid Level Check
The rear axle oil level needs to be between 1/8
in (3 mm) below the bottom of the fill hole and
the bottom of the fill hole.
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