Landoll 7450 VT Plus - Manual (Page 21)

ASSEMBLY INSTRUCTIONS
3-3
Disc Gangs

DANGER
1. Attach the disc gang assemblies to the center section
using 3/4-10 x 2-1/4, 3/4-10 x 8, 3/4-10 x 9 grade 8
hex head cap screws, and hex lock nuts (See
Figure 3-1.) Use a 3/4-10 x 9 grade 8 hex head cap
screw, manifold mounting bracket, and hex lock nut
on the center front screw of the left rear gang for all
sizes.
2. Install a 1/2 x 2-1/4 grooved alloy pin in the end of
each hinge pin.
3. Assemble each wing gang to the center frame gang
using the hinge pin, 1-3/4 thrust washer, and 1-1/4-7
hex lock nut allowing the blades to sit on the ground.
4. Assemble rh/lh light brackets.
NOTE
The thrust washer is positioned on the rear side of the
inner hinge on the front gangs, and on the front side of
the inner hinge on the rear gangs.
Figure 3-2: Stud Tightening Sequence
Mounting Center Frame Tires
and Wheels
Install the tire and wheel assemblies on the center
section. The center frame tires uses 235/75R17.5 tIres
with 8-bolt walking dual wheels and 4” slip-in spindles.
1. Make sure that all mounting surfaces are clean and
free of rust, dirt or paint. A wire brush may be used to
clean these surfaces (See Figure 3-1.)
2. Position the inner disc wheel over the studs, being
careful not to damage the stud threads. Make sure
that the disc wheel is flat against the mounting
surface. There will be a wheel spacer on the hub and
it needs to be mounted between the hub and the
inner wheel.
NOTE
Do not put hub spacer between the wheels.
3. Position the outer disc wheel being careful not to
damage the stud threads. Be sure the valve stems
for both the inner and outer tire are pointing away
from each other (facing outward). Align wheel holes
when mounting.
4. Install the flange nut and tighten to 50 foot-pounds
using the sequence in Figure 3-2. Then tighten to full
torque of 450-500 ft./lbs.
5. Torque will drop after the first 10 hours of operation.
Check the nuts for proper torque after this interval
and retighten them.

WARNING
NOTE
All tire/wheel assemblies are mounted with the valve
stem facing outward.
Disc blades are extremely sharp. Exercise
extreme care when working on or near disc
blades. Do not allow discs to roll over or fall onto
any bodily part. Do not allow wrenches to slip
when working near disc blades. Never push
wrenches toward disc blades. Do not climb over
machine above disc blades. Failure to stay clear
of disc blade edges can cause serious personal
injury or death.
Use a torque wrench to assure proper torque.
Insufficient torque can cause stud breakage and
damage wheel pilots. Overtorque can overstress
the studs and strip the threads.