Paccar Kenworth T170 Hybrid 2011, Builder'S Manual

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Section 6
Body Mounting
6-4
12/11
If your design permits placement of body mounting brackets at crossmember
locations, you can use the crossmember gusset bolt holes for body mount-
ing. See Figure 6-8
Any unused holes must have the correct size bolts installed and torqued
properly. Failure to do so can cause the frame rails to crack around the holes.
Holes must be located from the flange as indicated in Figure 6–7. They must be no closer than 2 inches (50 mm) to
each other .
Hole Location Guidelines
CAUTION:
Note:
Do not allow the frame rails or flanges to deform when tightening the U–bolts. It will
weaken the frame and could cause an accident. Use suitable spacers made of steel
or hardwood on the inside of the frame rail to prevent collapse of the frame flanges.
Do not allow spacers and other body mounting parts to interfere with brake lines,
fuel lines, or wiring harnesses routed inside the frame rail. Crimped or damaged
brake lines, fuel lines, or wiring could result in loss of braking, fuel leaks, electrical
overload or a fire. Carefully inspect the installation to ensure adequate clearances
for air brake lines, fuel lines, and wiring. See Figure 6–9.
Mount U–bolts so they do not chafe on frame rail. Failure to do so could result in
premature wear of the U-bolt or frame rail and cause an accident.
Use a hardwood spacer between the bottom flange and the U–bolt to prevent the U–bolt from notching the frame flange.
See Figure 6–8 .
Body Structure
Wood Sill 0 .5 (12) Minimum
Truck Frame
Frame Rail Spacer
(Fabricated Steel or
Hardwood)
U-Bolt Spacer (Hardwood)
FIGURE 6-7. Acceptable U-Bolt Mounting with Wood and Fabricated Spacers [inch mm)]
U-Bolt
BODY MOUNTING USING U–BOLTS
Spacers
If the body is mounted to the frame with U–bolts, use a hardwood sill (minimum 0 .5 inch (12 mm) thick)
between the frame rail and body frame to protect the top surface of the rail flange.
WARNING:
WARNING:
CAUTION: