Parking brake
Symptoms Major causes Remedies
Braking force is insufficient
or not evenly applied
•
The total thickness of three friction discs
and four center discs is 13.5 mm or less
• Disc surface is faulty
• Spring is damaged
• Bolt for manual releasing is being fitted
• Replace the discs.
• Repair or replace.
• Replace the spring.
• Remove the bolt for manual release, and fit
the plug.
Abnormal
heat generation
due to brake drag
Release of braking is faulty
•
Oil leak due to O-ring breakage
• Orifice is clogged
• Pilot pressure for the releasing is not
working
•
Replace the O-ring.
• Clean the orifice.
• Check whether the specified pressure is gen-
erated
in the pilot port, and then check and
repair each device.
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