General Information 7
Modifications to Vehicle
Chassis Frame
Frame side rails are heat treated. No weld-
ing is permitted because structural failure
may result. Do not drill through either top
or bottom flanges. A warning label is also
attached to the frame for information.
Drilling is permitted in the frame web in
accordance with a specified hole spacing
pattern. Consult a Volvo Truck dealer to
obtain approved hole spacing dimensions or
refer to the Frame Rail and Cross Member
Service Manual.
Frame rail and cross member nuts and bolts
should be checked periodically and tight-
ened to the specified torque if necessary.
W7001174
WARNING
Do not weld on any part of the frame or
drill holes in the top or bottom flanges.
Serious structural damage could occur.
Frame Alterations
Under no circumstances can the frame be
cut and an extension piece added to in-
crease the wheelbase. The only alteration
allowed is wheel base shortening, where
the only change in the frame rail is a new
hole pattern drilled for the new location of
the rear suspension.
Welding In Vehicle
Do not weld anywhere in or on the vehicle
before disconnecting batteries, all electronic
control units (ECU) and instrument cluster.
See page 249 for more information. Do not
use oxy/acetylene welding to repair cab
panels. Refer to the service manuals for
specific information.
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