Sand, Mud, Snow And Ice - Peterbilt 348 2017 Operator's Manual

VEHICLE RECOVERY AND SPRING BRAKES
6. With a wrench,
turn the release stud
assembly nut until the
compression spring
is 90-95 percent
2
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
lb-ft, Wedge type
maximum: 30 lb-ft).
The spring brake is
now mechanically
released.
2-22

Sand, Mud, Snow and Ice

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.
Y53-6060-1C1
WARNING!
Do not spin the wheels faster than
35 mph (55 km/h). Spinning a tire at
speedometer readings faster than
35 mph (55 km/h) 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 explosion could
cause death or personal injury to a
bystander or passenger, as well as
extensive vehicle damage: includ-
ing tire, transmission and/or rear
axle malfunction.
Comply with the following
instructions to avoid transmission
damage:
•
Always start vehicle in motion with
the shift lever in first gear.
(03/17)