Tecnam P2002 JF - ATA 32-20 Troubleshooting

Page 100 2
nd
Edition – Rev 0
32-20
BRAKE SYSTEM – TROUBLESHOOTING
TROUBLESHOOTING
The following troubleshooting steps are provided to augment specific system information
found in this manual about the brake system.
ATA 32-20 Troubleshooting
Trouble
Likely cause
Action required
Unable to obtain sufficient
hydraulic brake pressure.
Excessive toe pedal travel;
spongy pedal.
Air in hydraulic system.
Check for source, then
bleed brake system.
Vent in master cylinder
reservoir clogged.
Clean
Leak in system; brake,
master cylinder, fittings, or
lines.
Locate leak and repair.
Defective master cylinder.
Replace or repair.
Back plate bolts loose (not
properly torqued), causing
excessive brake deflection.
Torque bolts to proper
value.
Excess bolt torque has
caused back plate to crush
cylinder, evidenced by
depressions around bolt
holes.
Replace cylinders
Improper adjustment of
master cylinder rod length
restricting the development
of maximum stroke
Check cylinder rod for free
movement up to maximum
compression
Brake drag.
Piston cocked in cylinder,
resulting in overheating
brake and/or excessive
lining wear.
Remove and repair cylinder
or piston, or replace brake.
Foreign matter wedged in
brakes.
Locate and remove.
Back pressure due to
malfunction of master
cylinder or parking valve.
Bleed hydraulic system
and/or repair/replace
master cylinder or parking
valve.
Water or ice in hydraulic
system.
Bleed hydraulic system
Excessive bolt torque has
caused back plate to crush
cylinder, evidenced by
depressions around bolt
holes.
Replace cylinder