Tulsa Rufnek Intelliguard 3541RL, Руководство по обслуживанию

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B. BRAK E SECT I ON DI SASSEM BLY
Evenly remove the four capscrews (item 49)
that hold the brake cover in place. Spring
pressure will raise the cover up as the
capscrews are loosened. Carefully remove
the cover (item 28) from the brake housing
(item 14). Inspect the o-ring (item 36) for
damage and replace if necessary.
Remove the springs (item 30) from the piston
(item 29) and check the free height. Each
spring should measure at least 1.250 inches
with no force on them.
Remove the brake piston (item 29) by
installing two pieces of 3/8”-16NC all thread
into the two holes in the top of the piston and
run in evenly until the piston is clear of the
housing. An alternate way of removing the
piston is to use a portable hydraulic power unit
or air to gently pressurize the brake cavity to
remove the piston from the brake housing
(item 14).
If one or both the square seals (item 51)
remain in the bore of the brake housing,
remove them. Inspect the seals for damage
and replace if necessary.
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Grasp the brake driver/clutch assembly
(assembled items 34,37,38,39,40,41 & 42)
and remove it from the brake housing.
Remove the stator plates (item 25) and friction
discs (item 26) from the brake housing and
check them for excessive wear. Replace if
necessary. Be sure to check the top stator
plate for scoring caused by the removal of the
piston and polish if necessary. Friction discs
should measure no less than .055-in. thick and
stator plates should measure no less than
.068-in thick.
To dis-assemble the brake driver/clutch
assembly, remove the retaining ring (item 37)
from either end of the driver. Then remove the
race (item 38) and bushing (item 39). Slide
the brake driver (item 41) off the drive
coupling.
(Note: Notice the direction of lock-
up on the clutch for re-assembly. Inspect the
driver coupling and brake driver for wear.
Replace if necessary.
Remove the retaining ring (item 24), then
remove the middle piston (item 21). Inspect
the seal (item 43) and o-rings (items 20 & 81)
for damage and replace if necessary.
Remove the clutch spring (item 47) and thrust
washer (item 48) from brake housing.
Grasp the sliding clutch (item 27) and remove
from the brake housing.
Remove inner piston (item 17) from brake
housing. Inspect the o-rings (items 18 & 19)
for damage and replace if necessary.