AXLE-REAR
MOTOR TRUCK SERVICE MANUAL
Fig. 17-Bent Housing
Housing "A" shown in Fig. 17 is a diagrammatic sketch
line, was sprung from its original position. Repeated axle
of a housing bent or sprung through accident. The
shaft failures and excessive tire wear will occur with
differential carrier face was moved back from its original
housings in this condition. Bent in this direction, they
position shown by the dotted line. This change in
cannot be satisfactorily straightened, but must be
alignment was the result of contact by an obstruction with
replaced.
sufficient force to bend the housing. Housings like this
will be responsible for repeated axle shaft or differential
Overloading causes housing deflection. Since housings
failures. The misalignment must be corrected. This may
will recover from a certain amount of deflection, if it is not
sometimes be accomplished by straightening; however,
sufficient to produce a permanent set, trucks frequently
unless properly done by an experienced worker, the
operate with a temporary spring in the housing which will
spring may come in again.
be enough to create axle shaft failure. The same part
checked unloaded will seem to be in proper alignment.
Housing "B" shown in Fig. 17 was bent by excessive
loading. Note how the center, as shown by the dotted
74
