THRUSH AIRCRAFT, INC – MODEL S2R-G10
AIRCRAFT MAINTENANCE MANUAL
6-19
TABLE 6-1: WHEEL AND BRAKE TROUBLE SHOOTING CHART (page 2 of 2)
TROUBLE PROBABLE CAUSE REMEDY
Restriction in hydraulic
lines or restriction in
parking brake valve.
Have someone apply and then release
brakes. Wheel should rotate freely as soon
as brake is released. If wheel fails to rotate
freely, loosen brake line at brake housing
to relieve any pressure trapped in line. If
wheel now turns freely, the brake line is
restricted. Drain all brake lines and clear
the inside of brake line. If cleaning the
lines fails to give satisfactory results, the
parking brake valve may be faulty and
should be repaired.
Parking brake valve
holding.
Check parking brake valve. Release
parking brake valve.
Worn, scored or warped
brake disc (see Fig. 6-3).
Visually check disc. Replace brake disc
and lining if required.
Damage or accumulated
dirt restricting free
movement of wheel brake
parts.
Check parts for freedom of movement.
Clean and repair or replace parts as
necessary.
Dragging
brakes.
Leak in system.
Check entire hydraulic system for leaks. If
hydraulic reservoir, parking brake valve, or
wheel brake assemblies are leaking, they
must be repaired or replaced.
Effective: 03/26/2010 Page
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