Paccar Kenworth T800 2012, Manual, Page: 216 / 276

7-4
08/12
Section 7
Frame Modifications
When reducing the wheelbase, we recommend that the suspension be moved forward and relocated on the original rail.
The rail behind the suspension can then be cut to achieve the desired frame cutoff. See Figure 7–3.
Do not drill new holes any closer than 2 inches (50 mm) to existing holes. Frame drilling
affects the strength of the rails.
Before the rear suspension is relocated, check the new location of the spring hanger brackets. The new holes for the
spring hanger brackets must not overlap existing holes and should not come any closer than 2 inches (50 mm) to existing
holes.
FIGURE 7-3. Comparison of Original, Shortened, and Extended Wheelbases.
WARNING!
Original Wheelbase
Extended Wheelbase
Shortened Wheelbase
Cut Frame at Rear to
Obtain Desired Cutoff
Do Not Mount the
Suspension Bracket
On the Added
Frame Rail
Mount the suspension Brackets On the
Original Rail (see frame insert section &
Figures 7-1 and 7-2)
Relocated Rear
Suspension