TM-9-2320-272-23-5
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 5 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-5 - Page 448 of 623
1.
Slide nut and sleeve on tubing.
2.
Slide I.D. of tubing onto fitting insert until it bottoms.
3.
Assemble nut to fitting body.
4.
Tighten assembly finger-tight to cover body threads.
M9874DAA
Figure 5.
Knurl-On.
1.
Slide nut and sleeve on tubing.
2.
Slide I.D. of tubing onto fitting insert until it bottoms.
3.
Assemble nut to fitting body.
4.
Finger-tighten nut. From that point, tighten with a wrench two complete turns.
M9875DAA
Figure 6.
Self-Align-PTF.
1.
Cut tubing to desired length. Ensure ends are cut reasonably square.
2.
Slide tubing into preassembled fitting and push until tube bottoms.
3.
Tighten nut as indicated in chart. Another check on proper assembly is dimension A, when nut is fully
tightened.
M9876DAA
A
Figure 7.
Nylon Tubing for Airbrake.
TUBE O.D.
TIGHTEN NUT TO:
A
1/4
85 to 115 lb-in (9.6 to 13.0 N·m)
.085/.105
3/8
12 to 17 lb-ft (16.3 to 23.1 N·m)
.125/.145
1/2
25 to 33 lb-ft (33.9 to 44.7 N·m)
.100/.120
5/8
26 to 35 lb-ft (35.3 to 47.5 N·m)
.115/.135
3/4
38 to 50 lb-in (51.5 to 67.8 N·m)
.180/.200
DISASSEMBLY - Remove nut and pull tubing out of fitting body. Insert will remain on tubing.
REASSEMBLY - Push tubing and insert into fitting body until it bottoms. Thread nut onto fitting body and
tighten as in Step (3).
TM 9-2320-272-23-5
0821
0821-9
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