TM 5-3825-225-14&P
Section IX. FRAME AND TOWING ATTACHMENTS MAINTENANCE
4-27. KINGPIN AND FIFTH WHEEL PLATE ASSEMBLY MAINTENANCE.
a. Removal and Disassembly (See Appendix EF Figures 30 and 31).
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WARNING
Use proper lifting devices to support fifth wheel plate assembly while removing It.
It is very heavy and can Injure personnel If dropped.
CAUTION
Be alert not to break hose assemblies (5, Appendix F, Figure 31) when lowering
fifth wheel plate assembly.
(1) Remove screws (3 and 4, Appendix F, Figure 30), nuts (2), and lockwashers (1) and carefully lower fifth
wheel plate (5). Discard lockwashers.
(2) Disconnect straight adapters (6 and 7, Appendix F, Figure 31).
(3) Lower fifth wheel plate (5, Appendix F, Figure 30) completely.
(4) Disconnect straight adapters (4, Appendix F, Figure 31) and elbows (2).
(5) Remove and separate elbows (2), pipes (1), and grease fittings (8). Discard grease fittings.
(6) If hose assemblies (5) leak or are chafed, cracked, or plugged, replace them as an assembly.
b. Assembly and Installation (See Appendix Figures 30 and 31).
(1) Install new grease fittings (8, Appendix F, Figure 31), pipes (1), and elbows (2).
(2) Attach straight adapters (4) to elbows (2).
(3) Install straight adapters (7) in fifth wheel plate (5, Appendix F, Figure 30).
WARNING
Use proper lifting devices to support fifth wheel plate assembly. It is heavy and
can injure personnel if dropped.
(4) Lift fifth wheel plate (5) and connect straight adapters (6 and 7, Appendix F, Figure 31).
(5) Lift the fifth wheel plate (5, Appendix F, 30) and secure it with screws (3 and 4), new lockwashers (1),
and nuts (2).
(6) Lubricate kingpin and fifth wheel plate (see Chapter 3, Section I).
4-28. LANDING GEAR MAINTENANCE.
a. Removal and Disassembly (See Appendix E Figure 32).
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WARNING
Support the semitrailer with proper jacks or jackstands before removing landing
gear. Ensure that the water distributor is drained. Failure to follow this warning
may result in serious injury or death to personnel.
(1) Retract landing gear and place support blocks under the sand shoes (47).
(2) Remove nuts (3), lockwashers (2), screws (7), angle support (8), and side braces (1). Discard
lockwashers.
(3) Remove nuts (4), lockwashers (5), and screws (6). Discard lockwashers.
(4) Remove nuts (25), screws (22), landing gear assemblies and intermediate shaft (23).
(5) Remove nut (34), washers (35), screw (37), and crank (36).
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