MWO-9-2330-390-25-1
MODIFICATION WORK ORDER
MODIFICATION OF M1022A1 DOLLY SET; POSITIONING TUBE REINFORCEMENT
DECEMBER 2006
CHANGE 1
MWO-9-2330-390-25-1 - Page 30 of 54
MWO 9-2330-390-25-1
B-1
APPENDIX B.
MANEUVERING POSITION
a. Placing Dolly Half in Maneuvering Position.
WARNING
•
DO NOT operate control valve levers to put front or rear dolly in maneuvering position
unless telescopic brace and front axle steering locking pin are installed. Telescopic
brace and front axle steering locking pin must ALWAYS be installed before lift
cylinders reach their vertical position.
Failure to follow this warning may cause front
or rear dolly to overturn, resulting in serious injury or death to personnel.
CAUTION
•
Use extreme caution to ensure that near (left side) top beam vertical tube does not
contact control valve and fittings and cause damage when placing dolly half in
maneuvering position.
Carefully follow all steps and monitor position of lift cylinders
and pivoting tray to guard against binding and interference.
NOTE
•
The maneuvering position is a three-wheel configuration.
The dolly half’s center of
gravity is shifted over the axle, the top beam is resting over the drawbar, and the axle
is level with the ground.
In this position, the dolly half can be easily moved and
positioned where required.
•
Before proceeding, ensure that all stowed items such as rear drawbar, ladder, and
intradolly air hoses and cable have been removed; air bags must be deflated;
transportation lockouts have been secured to top beam vertical tubes with stowage
straps; and toolbox has been closed.
•
The following steps are performed at the front and/or rear dolly as required.
Procedure begins with bottom beam resting on ground with top and bottom beams
vertical and engines running at high idle.
(1)
Ensure that front axle steering locking pin (40) is installed to lock steering.
Ensure that
telescopic braces are installed.
(2)
Pull down on positioning cylinders lever (71) to extend positioning cylinders (2) until
telescopic brace (49) reaches rest pin (50).
(3)
Quickly push up on positioning cylinders lever (71) to FLOAT position.
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