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Page Title:
TROUBLESHOOTING GUIDE G HYDRAULIC |
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 TM 1-1510-223-MTF
TROUBLESHOOTING GUIDE G HYDRAULIC
CONDITION
PROBABLE CAUSE
G1.
Solid pedal, no brakes.
Brake linings worn beyond allowable limits.
G2.
Spongy brakes.
a.
Air in brake hydraulic system.
b.
Low hydraulic fluid.
G3.
Unable to hold brake pressure.
a.
Leak in brake hydraulic system.
b.
Brake cylinder seal leaking.
c.
Master cylinder seal leaking.
G4.
Brake pedals bottom, no brakes.
a.
Broken or leaking hydraulic lines.
b.
Brake cylinder seal failure.
c.
Master cylinder seal leaking.
G5.
Parking brake will not hold.
a.
Air in brake hydraulic system.
b.
Defective parking brake valve.
c.
PARKING BRAKE control out of adjustment.
G6.
Brakes grab.
a.
Stones or foreign matter locking brake disc.
b.
Warped or bent disc.
G7.
Brakes drag.
Packing nut or threaded bushing too loose.
G8.
Brakes weak.
Packing nut or threaded bushing, as applicable, too tight.
3-24
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