TM 9-2330-235-14&P
2-9.
UNCOUPLING TRAILER FROM TOWING VEHICLE (Con't).
WARNING
Weight distribution on the M390C trailer requires that rear leveling jacks be lowered to support
position before disconnecting trailer from towing vehicle. Failure to do so could cause trailer to
tip, causing Injury to personnel and damage to equipment.
f.
If uncoupling an M390C, lower rear leveling jacks (para 2-10).
g.
Raise pintle latch and unhook trailer drawbar coupler from towing vehicle pintle.
2-10.
LEVELING THE TRAILER.
a.
M514.
(1)
(2) Turn handcrank clockwise until leveling jack shoe firmly contacts ground and desired height is obtained.
(3)
Repeat steps 1 and 2 for second front leveling jack.
(4)
Remove support pin from supports on each side of rear leveling jack. Allow supports to rest on trailer.
(5)
Pull spring-loaded retractor out and rotate one-half turn to hold in released position.
(6)
Move rear leveling jack to vertical position.
(7)
Adjust leveling jack heights as required to level trailer.
CAUTION
Handbrakes must be released after emplacing trailer. Failure to release handbrakes
(8)
b.
M390C.
(1)
Using control lever (2), unlock each
double-swiveling
leveling
jack
support assembly.
(2)
Rotate support assembly until
control lever (2) locks in place.
(3)
Using control lever (2), swing
leveling jack to vertical position.
(4)
Turn handcrank (1) to lower shoe
(3) to ground.
(5)
Adjust leveling jack heights as re-
quired to level trailer.
2-10