Rear Axle And Suspension; General Maintenance - Peterbilt 348 2017 Operator's Manual

REAR AXLE AND SUSPENSION

REAR AXLE AND
SUSPENSION

General Maintenance

WARNING!
Do not work on the vehicle without
the parking brake set and wheels
blocked securely. If the vehicle is
not secured to prevent uncontrolled
vehicle movement, it could roll and
may result in death, personal injury,
equipment or property damage.
Your vehicle's suspension, by
design, requires a minimal amount of
5
maintenance. However, suspensions
in over-the-road operations require
periodic inspection to ensure trouble-
free performance.
5-132
WARNING!
Do not operate the vehicle if the
U-bolts are not properly tightened.
Loose U-bolts will cause the axle
to not be properly secured to the
suspension, which could cause loss
of vehicle control and an accident.
Loose U-bolts can also cause un-
even tire wear and poor alignment.
Failure to comply may result in
death, personal injury, equipment or
property damage.
Y53-6060-1C1
WARNING!
Failure to maintain the specified
torque values or to replace worn
parts can cause component system
failure, possibly resulting in an ac-
cident. Improperly tightened (loose)
suspension U-bolts can lead to un-
safe vehicle conditions, including:
hard steering, axle misalignment,
spring breakage or abnormal tire
wear. See Front Spring Suspension
U-bolts on page 5-117 for proper
torque specifications. Failure to
comply may result in death, per-
sonal injury, equipment or property
damage.
CAUTION
Do not spray the suspension with
chemical products or mineral oil; it
can cause damage to the bushings.
(03/17)