DRUM BRAKES
SUBSECTION 7C
Figure 7C-5. Planetary Brakes (9215J107-14)
See the Operator's Manual for the method of adjusting
THIRD DRUM BRAKE (2100N464-1)
brakes for normal lining wear.
DESCRIPTION. The third drum brake is spring set-hydrauli-
The third drum brake should be relined when brake lining
cally released brake and is supplied with the third drum.
thickness reaches 3/16 inch (0.48 cm) as measured at the
When there is no pressure in the third drum brake cylinder,
dead end of the band.
the piston is retraced and springs apply the third drum
brake.
REMOVAL. To remove the third drum brake band, proceed
as follows (see Figure 7C-6):
When the operator moves the third drum control lever,
1. Shut down the engine and operate a control lever until
hydraulic fluid is directed to the third drum brake cylinder.
all hydraulic pressure is exhausted from the system.
With hydraulic pressure applied to the cylinder, the piston
extends and applies force to the linkage, overcoming the
2. Unspool any rope left on the third drum.
spring and releasing the brake.
3. Remove the brake band adjusting bolt and spring by
removing the nut and spacer.
When the linings are new and the brake is in proper
adjustment, the brake spring length with the brake applied
4. Remove the dead end pin to free the dead end of the band
(hydraulic pressure released), should be 6-3/16". When
from the dead end bracket. Remove the live end pin to free
the brake lining starts to wear, thisdimension will increase.
the live end of the band from the actuating rod.
