SERVICE REPAIR
S2.00XL S2.50XL S3.00XL Europe [B187]
1
INTRODUCTION
GENERAL
This section has a description and the service
procedures for the brake system. The brake system
includes the following parts: master cylinder, master
cylinder with brake booster [only available lift truck
models H2.00–3.00XL (H40–60XL)], brake shoes,
wheel cylinders, a single inching/brake pedal and
linkage, and the parking brake system.
Two sizes of service brakes are used on the H3.00XL
(H60XL) lift trucks: a 260 mm (10.25 in) or a 310 mm
(12.20 in). New drive wheels and tires are required for
the larger diameter service brake. Both sizes of service
brakes are described in this section. A troubleshooting
section is included at the end of this section.
SERVICE BRAKES AND PARKING BRAKE
DESCRIPTION AND OPERATION
Service Brakes
A service brake assembly is installed on the brackets at
each end of the drive axle. The parts of the service brake
assembly for the 260 mm (10.25 in) brake are shown in
FIGURE 2. The parts of the service brake assembly for
the 310 mm (12.20 in) brake are shown in FIGURE 13.
When the brake pedal is pushed, fluid pressure from the
master cylinder causes the pistons in the wheel cylinder
to extend. The pistons expand the brake shoes against
the drum.
The clearance between the brake shoes and the brake
drum is adjusted automatically. An adjuster linkage
turns the adjuster wheel to adjust the clearance. When
the lift truck moves in the REVERSE direction and the
brakes are applied, the rear brake shoe and the adjuster
links move with the drum. This linkage moves the ad-
juster lever to rotate the adjuster wheel. The adjuster
wheel can turn only when there is clearance between the
lining of the brake shoe and the brake drum. The ad-
juster wheel can also be turned with a tool. A hole in the
drum is used for access to the adjuster wheel in the 260
mm (10.25 in) brake. A slot in the back plate gives ac-
cess to the adjuster wheel in the 310 mm (12.20 in