TM 9-2330-235-14&P
4-58.
SPRINGS AND RADIUS RODS REPLACEMENT (M390C) (Con't).
15.
Connect hose (3) to reducer (2) at master
cylinder (1).
16.
Add brake fluid to master cylinder (1).
Bleed
brakes (para 4-25).
17.
Adjust handbrake levers (para 3-7).
18.
Perform RADIUS ROD ADJUSTMENT (subpara
c).
c.
RADIUS ROD ADJUSTMENT
1.
Radius rod (39) maintain correct axle alinement and transmit stopping stresses to the frame. Radius rods also
provide a means of compensating for slight differences in strength of springs to give correct height.
2.
To determine if adjustment is necessary, measure distance from center of bumper bracket (9) to center of screw
(17). Distance should be 24 US in. (62.9 cm) + Y8 in. (3.2 mm) when trailer is empty. If distance is incorrect,
adjust radius rod (39) as follows:
(a)
Remove two nuts (23), screw (30), outer shouldered washer (29), sleeve bearing (28), inner shouldered
washer (24), two rubber bushings (25), and two flatwashers (26) securing radius rod (39) to spring hanger
(27).
(b)
Loosen two nuts (41) and turn middle portion (40) of radius rod (39) to shorten or lengthen. Fully tighten
nuts.
(c)
Install radius rod (39) on spring hanger (27) with two flatwashers (26), two rubber bushings (25), sleeve
bearing (28), inner shouldered washer (24), outer shouldered washer (29), screw (30), and two nuts (23).
3.
Repeat measurement and continue adjusting radius rod (39) until measurement is correct.
TA505068
4-151
