National Crane Published 5-27-2018 Control # 039-06 9-5
800D INSTALLATION
Requires 16,000 lb (7257 kg) GAWRF, 34,000 lb (15 422 kg) 
GAWRR, 50,000 lb (22 679 kg) GVWR, standard sub-base 
for 22 ft bed, SFO and RSOD rear stabilizers. Truck must 
have 20.0 in
3
 (327 cm
3
) section modulus and 2,200,000 lb-in 
(248 566 N-m) RBM or be capable of being reinforced to this 
strength under the crane frame through to the front 
suspension. Normally a tapered frame cannot be reinforced 
to this requirement. Additional truck frame requirements 
must be met from the crane frame through the front 
suspension to the SFO attachment point (See “Truck Frame 
and Mounting Bolt Requirements for Front Stabilizer” in this 
section).
*Actual axle scale weights prior to installation of crane, 
torsion box and stabilizers.
**If the distance from the front bumper (SFO) to center of 
rotation exceeds 144 in (366 cm), the 40 ft (12.19 m) overall 
truck length restriction will be exceeded. Overall length 
restrictions vary from state to state. In some states it is legal 
to be more than 40 ft (12.19 m) in length and some states 
allow overlength permits.
Configuration 3 — 800D (all booms other 
than 8100D)
This configuration allows the installation of the Series 800D 
on a chassis with a sub-base and bed combination which 
best fits the boom length. Depending on the boom length, the 
bed can be 18 ft, 20 ft or 22 ft. Not all bed lengths can be 
used with each boom due to rear overhang limits.
Requires 16,000 lb (7257 kg) GAWRF, 34,000 lb (15 422 kg) 
GAWRR, 50,000 lb (22 679 kg) GVWR, RSOD rear 
stabilizers and sub-base for 18 ft, 20 ft or 22 ft bed. Full 
capacity work area is rear 180° of vehicle from outrigger to 
outrigger. Truck frame must have or be capable of being 
reinforced to 15.9 in
3
 S.M. (260 cm
3
) and 1,749,000 lb-in 
(197 610 Nm) RBM under the crane, spring hanger to spring 
hanger.
*Actual scale weights prior to installation of crane, sub-base 
and stabilizers.
64 in 
(1625 mm) 
MIN
*8500 lb 
(3856 kg)
*9100 lb 
(4128 kg)
192 in 
(4876 mm) 
MIN
3 in (76 mm) MIN
RSOD
360° 
FULL CAPACITY 
WORK AREA
SFO
9428
RSOD
3 in (76 mm) MIN
165 in 
(4191 mm) 
MIN
*9100 lb 
(4128 kg)
*7500 lb 
(3402 kg)
69 in 
(1753 mm) 
MIN
180° 
FULL CAPACITY 
WORK AREA
9429
Fo
r 
Reference 
Only