MWO 5-4310-452-20-1
9. SPECIAL TOOLS; TOOL KITS; JIGS; TEST, MEASUREMENT AND DIAGNOSTIC EQUIPMENT
(TMDE); AND FIXTURES REQUIRED. There are no special tools, tool kits, jigs, or test measurement and
diagnostic equipment required to complete this MWO.
10. MODIFICATION PROCEDURE. Modify the Lunette/Drawbar using the following modification proc-
dures.
TOOLS REQUIRED
NSN
Torque Wrench (200 ft/lb capability)
5120-00-221-7983
15/16 Combination Wrench
5120-00-895-9573
Grinder/Sander
15/16 Socket 1/2 inch drive
5120-00-181-6813
Ratchet 1/2 inch drive
5120-00-230-6385
(1) Remove the five nuts (2) and bolts (1) holding the Iunette (3) to the frame.
(2) Remove the old Iunette.
CAUTION
CARC PAINT... Use breathing protection when sanding or removing paint.
(3) Using a sander/grinder, clean the area of old paint and scale before installing the new Iunette on the
drawbar frame. Make sure all paint, rust and scale is removed before installing the new Iunette. Prime the
surface which was just cleaned using zinc primer, NSN 8010-00-297-0593, or equivalent.
(4) Position the new Iunette on trailer frame and install the bolts from the bottom side with the nuts on top.
(5) Using a torque wrench tighten the nuts in three increments. The first increment will be 90 ft/lbs. The
second increment will be 125 ft/lbs. The third and final increment will be 190 ft/lbs, plus or minus 10
pounds.
(6) Torque all five nuts to the first increment before going to the next increment. The combination wrench
will be used to hold the head of the bolt while tightening the nut.
11. CALIBRATION REQUIREMENTS. Not applicable.
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