Landoll 425B Series, Руководство оператора

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4-20 F-543-1011 Edition
MAINTENANCE AND LUBRICATION
Figure 4-12: Brake Lining Wear
Emergency Relay Valve Maintenance
The Emergency Relay Valve should be disassembled,
cleaned, and lubricated by a trained technician
(See
Table 4-2) .

WARNING
Brake Assembly Maintenance
The brake assemblies should be inspected and adjusted
per interval described in
Table 4-2. Examine the brake
linings visually to locate the lining showing the greatest
amount of wear. The wheel and drum should be removed
and the linings replaced if the thinnest portion of the
lining is 3/8 in. (9.5 mm) or less. Do not allow the linings
to wear thin enough that the lining rivet contacts the
drum.
(See Figure 4-12.) Lubricate brake assembly per
Figure 4-1, Lubrication Points and Table 4-2,
Maintenance Schedule.

WARNING
Brake Adjustment
This semitrailer is equipped with automatic slack
adjusters which compensate for brake lining wear and
keep brakes adjusted. Brakes should not be adjusted
manually except when relining brakes.
Disassembly for 12-1/4” X 7-1/2” Brakes
1. Release brakes and back off slack adjuster.
2. Remove slack adjuster lock ring and slack adjuster
(See Figure 4-13.)
3. Remove drum assembly (See Figure 4-15.)
4. Remove anchor pin retainers, washers, and
bushings.
5. Remove anchor pins and brake shoes.
6. Remove brake return springs.
7. Remove camshaft lock ring, spacer washer and
camshaft
8. Remove roller pin retainers.
9. Remove roller pins and rollers from shoes.
10. Remove camshaft bushings and seals from spider.
11. After removing the shoes, completely inspect all
brake components, servicing as necessary.
Repair or replacement of the relay/emergency
valve is a complex operation and should be
performed by trained service personnel. Contact
a Landoll authorized service center or the Landoll
factory for servicing.
Do not allow grease to contact brake linings as
this could result in reduced braking performance.