MWO-9-2320-272-35-1
MODIFICATION OF 5-TON M939, M939A1, M939A2 SERIES FAMILY OF VEHICLES (FOV)
M939 BRAKE STABILIZATION PROGRAM (RETROFIT OF ANTI-LOCK BRAKE SYSTEM (ABS) FOR M939 FOV); MODIFICATION WORK ORDER
JANUARY 2007
CHANGE 1
MWO-9-2320-272-35-1 - Page 12 of 109
MWO 9-2320-272-35-1
10
c.
Bulk and Expendable Material.
NOMENCLATURE
NSN
CAGEC
PART NO.
QTY
Screw, Drive
96906
MS21318-20
1
Tire, Pneumatic, Vehicle
81348
X/GBX/GP3/TYRB/
w/insert (M939 Basic
CL0/0/11.00R20/H
11
vehicles only)
Inner Tube, Pneumatic
81348
GP2/11.00R20/
(M939 Basic vehicles only)
TR444/ONCENTER
11
Compound, Sealing
80244
24241
250cc
Lubricant, Molykote Paste
71984
CU7439
Qt.
d. Parts Disposition. All parts not reused during installation will be returned to stock for disposition in
accordance with AR 725-50.
9.
SPECIAL TOOLS; TOOL KITS; JIGS; TEST, MEASUREMENT, AND DIAGNOSTIC EQUIPMENT (TMDE); AND FIXTURES
REQUIRED.
a. Special tool:
NOMENCLATURE
NSN
CAGEC
PART NO.
Haldex Info-Centre
C0UKB6
WHMB364317001
b. Hand tools necessary to apply MWO are contained in the following kit:
NOMENCLATURE
NSN
CAGEC
PART NO.
SUPPLY CATALOG
Tool Kit, General Mechanic’s
50980
SC 5180-95-N26
Hole Saw Arbor w/1/4 in.
25795
4L535
Hole Saw 1-1/2 in.
25795
4L495
Step Bit 1/4-3/4 in.
53800
#9-MG44687
c.
Tools necessary to apply MWO are contained in following shop set:
NOMENCLATURE
NSN
CAGEC
SUPPLY CATALOG
Shop Equipment, Automotive
19204
SC 4910-95-A74
Maintenance and Repair:
Organizational Maintenance,
Common No. 1
10. MODIFICATION PROCEDURE.
NOTE
NOTE
The Quality Assurance (QA) checklist in appendix A will be used
as an in-progress checklist during the modification procedure and
as a final checklist to ensure adequate QA provisions have been
addressed.
a. Pre-Modification Vehicle Checks.
(1)
Check voltage per TM 9-2320-272-24 (voltage must not exceed 31 volts).
(2)
Verify operation of check valves by draining secondary reservoir.
(a) Primary reservoir pressure should NOT decrease when secondary reservoir is being
drained, however a 10-15 psi decrease is allowable.
(b) If primary reservoir pressure does decrease along with secondary, inspect and clean or
replace the primary reservoir one-way check valve as needed.
(3)
Start engine and allow air pressure to build to normal operating pressure (TM 9-2320-272-10).
(4)
Shut engine down (TM 9-2320-272-10).
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