TM-9-2330-335-14-P
SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)
SEPTEMBER 2008
TM-9-2330-335-14-P - Page 352 of 640
TM 9-2330-335-14&P
0075-4
0075
INSTALLATION - CONTINUED
4.
To center the kingpin (Figure 3, Item 4), measure the distance from the chalk mark to the center of the hub cap plugs on
the front axle (Figure 2, A and B). The difference between measurements should be no more than 3/8 in.
5.
If the measurements are not correct, adjust position of kingpin (Figure 3, Item 4) on bolster plate (Figure 3, Item 5) until
measurements are within limits.
Figure 3.
Center Kingpin.
075
WARNING
Wear welding mask, gloves, and apron when welding or using cutting torch. Failure to wear
adequate protective clothing may result in serious injury.
6.
Weld the kingpin (Figure 3, Item 4) 8-in.-round base to the bolster plate (Figure 3, Item 5) with a continuous 5/8-in. fillet
weld. Welds are to be in accordance with MIL-STD-1261, class 3. Use 70,000 psi electrode or wire of the following
specification: electrodes, mineral coated, low hydrogens MIL-E-2200/6 type MIL-10015 or MIL-10016. Wire, use bare
solid wire, low alloy steel, MIL-E-23765/2 type 100S-1 or 110S-1.
7.
Repeat step 6 two times to obtain a continuous 3-pass weld on the kingpin.
8.
Inspect kingpin weld and the air-arc cut edges with dye penetrant or magnetic particle inspection. No cracks are
allowable. Any cracks found must be ground out or otherwise repaired.
9.
Weld into place the top metal plate (Figure 3, Item 2) that was removed to gain access to the kingpin.
10. Prime and paint the top metal plate (Figure 3, Item 2) as follows: prime, per TT-P-636 or TT-P-634. Paint using chemical
Agent Resistant Coating (CARC) per MIL-DTL-53039 or MIL-DTL-64159.
END OF TASK
447-0193
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