Doosan DA40 - Page 431

SHOP MANUAL
DRIVE LINE
Ch 3 page 68 Ch 3 page 69
DRIVE LINE
5. Measure the distance from the bottom of the chamber to the
center of the clevis pin while the brakes are applied.
Figure 181.
6. Have another person release and hold the brakes.
7. Measure the distance from the bottom of the chamber
to the center of the clevis pin while the brakes are
released.
• To determine push rod travel (adjusted chamber
stroke): Subtract the measurement you recorded
in Step 5 from the measurement recorded in Step 7.
The difference is the push rod travel (adjusted
chamber stroke).
Push rod travel (adjusted chamber stroke)
must not exceed 2.0-inches (50.8 mm).
• If push rod travel (adjusted chamber stroke)
exceeds specification, Refer to Section,
Troubleshooting Park brake
Inspect the Brake Components
Lining Thickness
Lining material thickness must not be less than 0.200-inch (5.1 mm). Replace the linings before
the lining material thickness reaches this specification.
Anti-Rattle Springs
1. Anti-rattle springs are attached to the linings.
Inspect for bent, cracked or broken springs.
2. If you find damaged springs, replace both springs.
Seals
Replace the caliper if you find cracked, torn or damaged seals.
Caliper
1. The caliper should slide freely on the slide pins. Slide the caliper back and forth to check for
clearance between the disc and pad.
2. Check that the linings slide freely in the caliper.
3. If components are worn enough to restrict free movement of the caliper or linings,
replace the caliper.
Install only the specied components when you service the caliper. Do mix
components from other calipers. Installing non-specied components can
cause the caliper to operate incorrectly and can cause equipment damage.
CAUTION
Use Doosan parts only. Do not use parts manufactured by other suppliers.
Use of non-Doosan parts can cause damage, loss of braking and serious
personal injury.
WARNING
Figure 181