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5
FRAME MODIFICATIONS
Peterbilt Motors Company 5-2
CROSSMEMBERS
After lengthening a wheelbase, an additional crossmember may be required to maintain the original frame strength. Con-
tact Dealer for crossmember locations.
The maximum allowable distance between the forward suspension crossmember and the next crossmember forward
is 47.2 inches (1200 mm). If the distance exceeds 47.2 inches (1200 mm) after the wheelbase is lengthened, add a
crossmember between them. See Figure 5-4. See Figure 4-7 on page 4-3 for crossmember hole patterns.
FIGURE 5-2. Crossmember Spacing Requirements