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13
Section 2
Hydraulic Brakes
H Brake
(Hydraulic)
Description
The H brakes are two shoe hydraulic brakes
mounted on backing plates or on planetary axle
housings. Many of the H brakes have adjustable
anchor pins to permit the centering of the brake
shoe arc with the drum and eccentric cams for
secondary brake shoe adjustment. H brakes are
available in nine different sizes from 7.125" x 2" to
17.25" x 4" (180.9 mm x 50.8 mm to 438.1 mm x
101.6 mm). Figures 2.15 and 2.16.
Figure 2.15
H BRAKE
Figure 2.16
GUIDE PIN LOCK
BRAKE SHOE
RETURN SPRING
ANCHOR PIN
ā€œCā€ WASHER
ADJUSTABLE BRAKE SHOE
ANCHOR PIN
BACKING PLATE ASSEMBLY
BRAKE SHOE AND
LINING ASSEMBLY
BRAKE SHOE
ECCENTRIC
ADJUSTER
WHEEL CYLINDER
ASSEMBLY
GUIDE PIN
WASHER
GUIDE PIN SPRING
WASHER