Lit. No. 30118, Rev. 00
June 15, 2020
8
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."
Center of Hole
in Vehicle Mount
d
BLADE, T-FRAME & HEADGEAR
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
Hole 1
Hole 2
Hole 3
