Lit. No. 74912, Rev. 00
6
May 1, 2020
T-FRAME HOLE POSITION
IMPORTANT!
Before assembling the headgear to the
T-frame, the T-frame hole position must be determined
using the following procedure. (If the truck is not
available, use the middle position. Adjustments can be
made later.)
Before measuring the vehicle mount height, the
vehicle mount must be installed, ballast must be
installed, if required, and the vehicle must be parked
on a level surface.
1. Measure the distance "d" from the ground to the
center of the hole in the vehicle mount. Measure
the distance on both sides of the vehicle and
determine average value for "d."
2. Use distance "d" from Step 1 and the following
chart to determine the proper T-frame hole.
T-Frame Hole Chart
Distance "d"
Hole
14.25" – 15.5"
1
13.0" – 14.25"
2
11.75" – 13.0"
3
T-FRAME TO HEADGEAR
1. Position the T-frame between the headgear strut
and inner ear, aligned with the appropriate T-frame
hole.
2. On each side, insert a 3/4" x 3-1/4" clevis pin
(from the shipping bracket) from the outside of
the headgear through the correct T-frame hole.
Secure the clevis pins with 5/32" x 1-1/2" cotter
pins found in the parts bag.
3.
Fold the headgear forward and pin the lift cylinder
to the T-frame using a 1/2" x 2-1/8" clevis pin and
5/32" x 1-1/2" cotter pin from the parts bag.
INSTALLATION INSTRUCTIONS
3/4" x 3-1/4"
Clevis Pin
5/32" x 1-1/2"
Cotter Pins
1/2" x 2-1/8"
Clevis Pin
Hole 1
Hole 2
Hole 3
Center of Hole
in Vehicle Mount
d
