TM-9-2320-341-10

TRUCK, TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET), 8X8 M983A4 LET

TECHNICAL MANUAL; OPERATOR'S MANUAL

OCTOBER 2008

TM-9-2320-341-10 - Page 322 of 962

16. Assistant visually checks that front of semitrailer is on guide ramps (10).

10

Figure 9.

17. Slowly back tractor vehicle until fifth wheel jaws lock around kingpin. Stop tractor

vehicle.

NOTE

Daylight should not show between top of fifth wheel plate and bottom of

semitrailer.

18. Assistant visually checks that kingpin is in fifth wheel throat.

19. Ensure primary lock release handle (8) is pushed completely in.

8

Figure 10.

NOTE

If coupling is not secure, rock tractor vehicle back and forth slowly until

kingpin is locked in fifth wheel.

20. Verify semitrailer kingpin is fully engaged and locked within fifth wheel.

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