Landoll 600A Series, Руководство оператора

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c. Reassembly for 12-1/4" X 7-1/2" Brakes
(See Figure 4-13)
1. Install new camshaft bushing and seals
into the spider.
IMPORTANT
WHEN INSTALLING CAMSHAFT SEALS, THE
SEAL ON THE SLACK ADJUSTER SIDE IS IN-
STALLED FACING INTO SPIDER. THIS ALLOWS
GREASE TO PURGE OUTSIDE THE BRAKE AS-
SEMBLY WHEN GREASING THE CAMSHAFT
BUSHING.
2. Install cam roller assemblies onto the brake
shoes.
3. Install “D” shaped camshaft washer onto
the camshaft.
4. Install the camshaft into the spider. Install
spacer washer and lock ring retainer on
camshaft before sliding the camshaft
through the camshaft support bracket.
Install the slack adjuster, washer and lock
ring retainer.
5. Install shoes, anchor pin bushings, anchor
pins, and spacers onto spider. Install
anchor lock rings.
IMPORTANT
ALWAYS USE ALL NEW SPRINGS WHEN
SERVICING BRAKES.
6. Install brake return spring.
7. Connect slack adjuster to brake chamber
pushrod.
8. Adjust automatic slack adjuster as outlined
in Section 4-8.5b.
d. Disassembly for 16-1/2" x 7" Brakes (See
Figure 4-13).
1. Release brakes and back off slack
adjuster.
2. Remove slack adjuster lock ring and slack
adjuster.
3. Remove drum assembly (See Figure
4-13).
4. Disengage the roller retainers from the
rollers.
5. Press down on the bottom brake shoe and
remove the lower cam roller. Lift the top
shoe and take out the top cam roller.
6. Lift out the shoe retractor spring, which is
now free of tension.
7. Swing the lower shoe back approximately
180
o
to relieve the tension on the shoe
keeper springs. Remove the springs and
slip the shoes off the anchor pins.
8. Remove camshaft lock ring, spacer
washer(s) and camshaft.
9. After removing the shoes, completely
inspect all brake components, servicing as
necessary.
e. Reassembly for 16-1/2 x 7" Brakes (See
Figure 4-13).
1. Install new anchor pin bushings, camshaft
bushing and camshaft seals into the spider.
IMPORTANT
WHEN INSTALLING CAMSHAFT SEALS, THE
SEAL ON THE SLACK ADJUSTER SIDE IS FAC-
ING INTO SPIDER. THIS ALLOWS GREASE TO
PURGE OUTSIDE THE BRAKE ASSEMBLY
WHEN GREASING THE CAMSHAFT BUSHING.
2. Install cam roller, retainer clip and retractor
spring retainers onto the camshaft.
3. Install 1/8" thick camshaft washer onto the
camshaft.
4. Install the camshaft into the spider. Install
spacer washer and lock ring retainer on
camshaft before sliding the camshaft
through the camshaft support bracket.
Install the slack adjuster, washer and lock
ring retainer.
5. Install the brake keeper onto the shoes.
Install shoes onto the spider by placing
shoes in place on the anchor pins, then
“wrap” the two shoes into place about the
spider.
6. Install the shoe retractor spring onto the
shoes.
7. Connect slack adjuster to brake chamber
pushrod.
8. Adjust automatic slack adjuster as outlined
in Section 4-8.5c.
4-8.5 Automatic Slack Adjuster
The semitrailer automatic slack adjusters pro-
vide the means for routine brake adjustment to
compensate for lining wear. Inspect slack adjusters
every 2,000 miles to assure correct operation.
4-22