TM-5-5420-279-10
Figure 3. 21 Tilt Roller
Leveling the A-Frame
3.5.4.1
If not already selected, set the 4-position mode selector rotary switch to position 4. Make
sure the PTO engages and the engine rpm goes to high idle.
NOTE
If the A-frame is not horizontal, difficulty could be experienced when launch beam or bridging
modules are being connected together during assembly.
3.5.4.2
Check the spirit level gauge on the lower A-frame transverse beam to confirm the A-frame
is level. If necessary, adjust the A-frame horizontal position by carrying out step 3.5.4.4.
Confirm that the A-Frame stabilizer legs are within the correct pin hole range (Chapter 1
Section II Table 1.8, Table 1.9 or Table 1.10).
3.5.4.3
Check the longitudinal slope of the slide frame to ensure that the slide frame is slightly
angled either positively or negatively. If the slide frame is horizontal raise or lower the A-
frame dependent on the ground slope to create a positive or negative slope on the slide
frame.
3.5.4.4
If necessary, at the A-frame stabilizer controls, extend the stabilizer on the low side of the
A-frame until the spirit level on the lower A-frame transverse beam indicates the A-frame
is horizontally level. The A-frame being level when the bubble is between the two lines.
