TM 9-2330-238-14
Section V. FRAME AND TOWING ATTACHMENTS MAINTENANCE
Page
Paragraph Title
Number
Kingpin Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-19
Landing Gear Actuating Leg Assembly Repair (Early Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-39
Landing Gear Gearbox Repair (Early Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-31
Landing Gear Leg Assembly Maintenance (Early Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-34
Landing Gear Maintenance (Early Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-20
Landing Gear Ratchet Maintenance (Early Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-43
5-10. KINGPIN REPLACEMENT.
This Task Covers:
a.
Removal
b.
Installation
Initial Setup:
Materials/Parts:
Tools/Test Equipment:
• One kingpin (P/N MS53036-1)
• General mechanic’s toolkit
• 90 psi supply of shop air
References:
• 300 amp welder
• TM 9-237
• 100,000 psi electrode or wire
a.
REMOVAL
CAUTION
Care must be taken to minimize damage to bolster plate. Damage to kingpin being
removed is of no consequence.
1.
Remove weld from outside 12 in. (30.48 mm) diameter and four plug welds from kingpin ’’mushroom” top, using
air-arc process (TM 9-237).
2.
Remove kingpin.
3.
Grind area of bolster plate under kingpin “mushroom” flush so that new kingpin will lie flat on bolster plate.
b.
INSTALLATION
1.
Install new kingpin. Aline holes in kingpin top in same manner as the one removed.
2.
Preheat kingpin and bolster plate to 150°F (66°C) and maintain throughout welding process.
3.
Weld kingpin “mushroom” to bolster plate with 3/8 in. (9.53 mm) fillet weld on outside diameter and 1/2 in.
(12.7 mm) plug welds in holes in “mushroom”, Welds must be in accordance with MIL-STD-1261, Class 3 and
TM 9-237.
4.
Inspect weld with dye penetrant or magnetic particles. No cracks are aIlowed. Any cracks found must be
repaired.
5.
Prime top of kingpin and bolster plate per TT-P-636 or TT-P-664. Paint with enamel per MI L-E-52798 (color: forest
green).
5-19
