11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
71
STEP 15 - ADJUST UNDERRIDE - Continued
NOTE: The bed height dimensions, for each underride hole shown below, apply to
an unloaded vehicle.
RECOMMENDED BOLTED HOLE POSITIONS FOR OPTIONAL
FMVSS UNDERRIDE INSTALLED ON GPTLR-25 & GPTLR-33
BED
HEIGHT
UNDER-
RIDE
HOLE NO.
“H”
EXPECTED UN-
DERRIDE GROUND
CLEARANCE
(PLATFORM STOWED)
“H1”
EXPECTED UNDERRIDE GROUND CLEAR-
ANCE & MAX SPRING DEFLECTION OF
VEHICLE WITH LOAD
(PLATFORM ON THE GROUND)
55” 1 21.5” 6.3”
54” 2 21.5” 5.5”
53” 2 21.5” 4.7”
52” 3 21.5” 4.0”
51” 3 21.5” 3.4”
50” 4 21.5” 2.9”
49” 4 21.5” 2.4”
48” 4 21.5” 2.0”
47” 5 21.5” 1.7”
44” 6 21.5” 1.4”
TABLE 71-1