TM 9-2330-381-14
4-60.
LOADING RAMP (CONT)
ADJUSTMENT
1.
Adjust rear of platform to 36 inches (91.4 cm) high (para. 2-19).
2.
Operate spring assisted ramps (para. 2-20) and check for proper tension of spring (12) adjustment as follows:
a. When lowering ramps, the ramp ends, upon first contact with the ground, should remain on the ground or rise not
more that 6 inches (15 cm) from bottom of ramp to ground. If ramp ends rise higher, spring tension may be too
great. To reduce spring tension, proceed to step 3 below.
b. When lowering ramps, the ramp ends, without downward push from operator, should not forcefully strike the
ground and remain there. Raising of ramp should not require extreme effort by one operator. If above conditions
are observed, ramp springs do not have sufficient tension. Refer to step 4 to increase spring tension.
c. If ramp meets requirements of steps a and b, ramps are properly adjusted.
3.
Reduce spring tension as follows:
a. Raise ramps and attach chain assemblies to platform (para. 2-20).
b. One person must hold spring (12) in place while second person removes locknut (14) and capscrew (15) from
adjustment fitting (16).
c. Lower fitting (16) on guide rod (8) and aline with next available hole in rod (8). Insert capscrew (15) and secure
with locknut (14).
d. Operate ramps and check for proper tension on spring. Repeat steps 3a and 3b as required.
Change 1 4-301
