SECTION V
PREVENTIVE MAINTENANCE
CHECK THIRD DRUM BRAKE
The third drum brake is a spring set, hydraulically released
type brake.
To adjust the third drum brake, proceed as follows (see
1. From the operator's cab, release the third drum brake
and then apply it. With the brake set, the spirng length
should be between 6-3/16" and 6-3/8".
NOTE
The 6-3/16" dimension is for machines with new
linings. The 6-3/8" spring dimension is the point at
which the brake must be readjusted.
2. If the dimension observed in step 1 is greater than 6-
3/8", tighten the brake band adjusting nut as necessary
until the spring length is 6-3/16".
NOTE
The 6-3/16" spring length dimension given above is
the original setting. The spring length will increase as
the brake lining wears.
3. The third drum brake should be relined when the thick-
ness of the lining has been reduced to 3/16", as measured
at the dead end of the band. See the Shop Manual for
relining instructions.
Figure 5B-10. Third Drum Brake
CHECK CHAIN CASE OIL LEVEL
Remove the level plug from the chain case to check the level
of the oil in the chain case. The oil should be just up to the
bottom of the level plug opening. If the oil is not at the proper
level, add oil of the type specified in Section III, as required,
to bring the oil to the proper level (see Figure 5C-6).
FiII the chain case through the fill/breather cap at the bot-
tom edge of the chain case cover.
Figure 5B-11 Chain Case Oil Level
5-16
