Specifications

STARTING AND OPERATING THE VEHICLE VEHICLE RECOVERY AND SPRING BRAKES
Medium Duty
(R05/09) Y53-6008A – 141 –
6. With a wrench, turn the
release stud assembly nut until
the compression spring is 90–
95 percent caged. While doing
this, check to make sure the
push rod (adapter push rod or
service push rod) is retracting.
Do not over-torque the release
stud assembly. (S–Cam type
maximum: 50 ft-lb, Wedge type
maximum: 30 ft-lb.) The spring
brake is now mechanically
released.
Freeing the Vehicle from Sand,
Mud, Snow and Ice
WARNING! Do not spin the wheels faster
than 35 mph (55 km/h). Spinning a tire at
speedometer readings above this can be
dangerous—tires can explode from spinning
too fast. Under some conditions, a tire may
be spinning at a speed twice that shown on
the speedometer. Any resulting tire explo-
sion could cause severe injury or death to a
bystander or passenger, as well as exten-
sive vehicle damage: including tire, trans-
mission and/or rear axle malfunction.
If the vehicle gets stuck in sand, mud, snow, or ice:
• Move the gearshift lever or selector from First to
Reverse.
• Apply light pressure on the accelerator pedal while
the transmission is in gear.
• Remove your foot from the accelerator while shifting.
• Do not race the engine.
• For best traction and safety, avoid spinning the
wheels.