MM40-107/30-107 COMPONENT MAINTENANCE MANUAL WITH IPL
FOR MAIN WHEEL ASSEMBLY PART NO. 40-107 SERIES AND
MAIN BRAKE ASSEMBLY PART NO. 30-107 SERIES
Page 9
Feb 01/02
5.
SERVICING RETRACT SPRING STACK (30-107, 30-107A, 30-107B)
Refer to IPL Figure 9 for identification of brake assembly components.
With the exception of piston removal, corrosion or damage caused by external
(foreign objects), the spring stacks should not require service and/or replacement.
If removal is required, caution must be taken and eye protection worn to avoid
injury since we are dealing with a preloaded spring stack.
5.1
Apply a slight amount of pressure to the brake system to prevent piston
rotation.
5.2
For brake assemblies equipped with stud assembly (9-125):
WARNING:
USE EXTREME CAUTION WHEN REMOVING THE STUD
ASSEMBLY (9-125). THE DISC SPRINGS (9-120) ARE UNDER
LOAD.
5.2.1
Loosen and slowly remove the stud assembly (9-125) from each
piston.
5.2.2
Slide the disc springs (9-120) from each stud assembly. At this
point, check to see if the bolt (9-140) in the stud assembly has
loosened. If so, re-tighten the bolt into the stud at 80-90 in-lbs.
5.2.3
Inspect the springs (9-120) for nicks or other damage caused by
stones or other foreign objects. Damage of this nature is cause for
replacement.
5.2.4
Inspect parts for corrosion. Lightly corroded parts may be polished
with a fine grit emery and coated with a light film of oil or lubricant.
Parts that are deeply corroded and/or pitted must be replaced.
5.2.5
Refer to Figure 3. After inspection, slide disc springs (9-120) onto
the stud (9-130). Re-attach to each piston as shown in Figure 3.
Torque stud assembly (9-125) at 60-70 in-lbs.
5.2.5
Actuate brake 2-3 times and visually inspect each assembly to
insure that everything appears normal and seat properly.
