TM 5-3805-290-23-1
THEORY OF OPERATION - CONTINUED
0003 00
BRAKE SYSTEM - CONTINUED
11.
Parking Brake.
a.
Parking brake is located in drive line on forward end of transmission. Braking force is applied with lever and cable
assembly. Arrangement is manually actuated pulling upward on lever.
b.
As drive shaft rotates, drum rotates. Brake group and lever assembly are fastened to cage. Cage remains stationary.
c.
When parking brake is engaged, lever assembly moves upward, and brake group is actuated. Brake group consists
of three retraction springs and two brake shoes. These components are mounted on plate assembly.
d.
When lever is pulled up, cable pulls lever assembly. When lever assembly is pulled, lever pulls apart plate sections.
This causes brake shoes to press against drum. Drive shaft is prevented from rotating.
e.
When button on lever is pressed and lever is released, springs cause plate sections to close.
427-B1564
0003 00-118
