44
3. Insert rst, a steel brake disc against the spacer
followed by a friction brake disc then alternate steel
and friction discs until seven (7) friction and eight (8)
steel discs have been installed. Finish with a steel
brake disc on top.
NOTE: Lubricate the discs in gear oil prior to assembly.
4. Install the remaining brake spacer on top of the last
steel brake disc. (This is the only spacer used with
lobed discs.)
5. To check brake stack height, place pressure plate on
top of brake spacer. Hold pressure plate down rmly by
hand and measure clearance in three places between
motor support and pressure plate. Average gap must
measure between .153 in. (4 mm) maximum and .080
in. (2 mm) minimum. If the gap exceeds the maximum
limit, there are too many brake discs in stack-up or the
discs are distorted. If the gap is less than the minimum,
there are too few discs in stack-up or the discs are worn
out. When stack height is correct, remove pressure
plate and continue assembly.
6. Lubricate the brake piston seal and motor support
sealing surface with petroleum jelly or hydraulic oil.
Install new piston seal to motor support, seal lip down.
Note the height of the brake piston seal was changed
in 2014 from 0.562 in. (0.562mm) to 0.25 inch (6.4mm).
OLDER STYLE BRAKE CYLINDER
7. Install brake springs into brake cylinder
NEW STYLE BRAKE CYLINDER
7A. When using the new style brake cylinder without
milled spring pockets, install the spring spacer, then
the brake springs.
MOTOR SUPPORT — BRAKE CYLINDER SERVICE
DO NOT clean brake friction disks in solvent. Solvent may
cause damage to friction material which may result in brake
failure and loss of load control.
!
!
To Next Page
Loading...
