Vehicle Recovery and Spring Brakes Operating Instructions
– 112 – Y53-6008
Medium Duty (R10/06)
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.
Comply with the following instructions to avoid transmission
damage:
• Always start the vehicle in motion with the shift lever in
first gear.
• Be sure that the transmission is fully engaged in gear
before releasing the clutch pedal (manual only).
• Do not shift into reverse while the vehicle is moving.
• Do not permit the vehicle to be towed for long distances
without removing the driveshaft.
Tire Chains
If you need tire chains, install them on both sides of the driv-
ing axle.
CAUTION: Chains on the tires of only one tan-
dem axle can damage the driveline U–joints and
the interaxle differential. Repairs could be costly
and time-consuming.