99903514:TELESCOPIC CRANE: 4-9
SECTION 4: INSTALLATION
4.8 MODEL 3020 CRANE INSTALLA-
TION
MINIMUM CHASSIS SPECIFICATIONS
BODY STYLE Conventional
Cab
WHEELBASE 154”
CAB TO AXLE 84”
FRAME SECTION MODULUS 10 in³
RBM 360,000 in-lb
FRONT AXLE RATING 5000 lb
REAR AXLE RATING 9500 lb
TRANSMISSION 4-speed
CRANE INSTALLATION
In addition to meeting Minimum Chassis
Specifications, there must be sufficient room
for mounting the crane and the platform must
be strong enough to support the crane and
rated load. Install the 3020 crane only on an
IMT designed and approved truck body. The
body must be designed to sustain the forces
imposed by the crane when lifting the full rated
load. In addition, an IMT designed body is
designed to take full advantage of the standard
reservoir placement. This reservoir is in-
stalled in the cargo area of the body. Before
attempting to install the crane, the body must
be installed.
To install the crane:
1. Use a lifting device capable of lifting the
weight of the crane, 1,400 lbs (635 kg). Attach
fabric slings to the crane lower boom, cen-
tered approximately 18 inches from the mast
hinge. Make certain the crane is well bal-
anced on the slings by slowly lifting approxi-
mately 6" off the ground. Lift the crane, apply
a bead of waterproof compound, such as
silicon based caulk, to the bottom of the base.
Move the chassis under the crane and lower
the crane into the desired position.
2. Install the 1-8x3" mounting cap screws
and 1" washers to secure the crane base to
the truck body (see Figure below). Torque the
cap screws to 680 ft-lbs (94 kg-m).
CAP SCREW
1-8 X3" SH GR8
(4 PLACES)
1" WASHER
(4 PLACES)
WASHER,
SPECIAL
1" X 2" X 1/4"
(4 PLACES)
CRANE INSTALLATION
MOUNTING HOLE LAYOUT
CAUTION
THE 3” BOLTS SUPPLIED FOR USE ON
BODIES WITH A CRANE BOX TOP PLATE
THICKNESS OF 7/8”-1” ONLY. DETERMINE
THE CRANE BOX TOP PLATE THICKNESS
PRIOR TO MOUNTING. IF DIFFERENT
LENGTH BOLTS ARE REQUIRED, THEY
MUST BE 1-8, GRADE 8, ZINC COATED OF
THE PROPER LENGTH. FAILURE TO USE
PROPER LENGTH BOLTS MAY CAUSE THE
BOLTS UNDER THE WORM HOUSING TO
BOTTOM OUT BEFORE TORQUEING. IN-
SURE A MINIMUM OF 1-1/2” THREAD EN-
GAGEMENT.
20030115
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