4-79. SPRING ASSEMBLY REPLACEMENT (Con't).
When replacing springs, weight of semitrailer must be supported by Ieveling jacks or by
blocking or placing jackstands under rear corners of frame. Failure to follow this
warning may result in serious injury to personnel.
With rear of semitrailer raised and axle and wheel assembly properly located, install spring assembly (12) on
axle mounting bracket (10). Nut (11 ) of spring assembly center bolt should rest in recess on mounting bracket.
install two U-bolts (9), four flatwashers (3), and nuts (4) in spring assembly (12). Torque nuts to 350 ft.-lb.
Raise axle (6) and spring assembly (12) into position. Ends of spring assembly should be fitted into front and
rear spring holders (2).
install screw (1) in each spring holder (2). Secure each screw with nut (14) and new cotter pin (13).
Connect hydraulic line (8) to multiple connector (7) on rear of axle (6).
Close pressure tank draincock (5).
Raise rear of semitrailer to relieve weight from leveling jacks. Place leveling jacks in stowed position under
Lower rear of semitrailer.