(a)
Remove the pressure from the main hydraulic system (Ref 29-11-00).
(b)
Do a check of the brakes for leaks at these locations: 1) All hydraulic line connections. 2) Bleed ports. 3) Inlet ports. 4) Ports that drain hydraulic fluid. 5) Plugs in the piston housing. 6) Pistons.
(c)
Pressurize the right hydraulic system and reservoir (Ref 29-11-00).
(d)
Look for fluid leaks again while the system is pressurized: 1) Apply the brakes and hold them. 2) Look for leaks again at the same locations on the brake
where you looked when the system was not pressurized. 3) Release the brakes. 4) Do a check for leaks again at the same locations on the
brakes.
(e) If you find leaks, repair or replace the brake assembly
S 716-007
(3)
Do the check that follows to make sure that the brakes operate:
(a)
Apply the brakes and hold them.
(b)
Look at the rotors and stators on the brakes to make sure that they engage.
(c)
Release the brakes.
(d)
Look at the rotors and stators on the brake to make sure that they disengage.
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S 216-027
(4) Do a check for missing brake wear indicator pins.
NOTE: Each brake has two brake wear indicator pins.
____
(a)
If two brake wear pins are missing, you must replace the brake prior to the next flight.
(b)
If one wear pin is missing, the brake can stay in service if the wear pin operation is satisfactory.
S 216-010
(5)
Do a check for permitted brake wear as follows:
(a)
Pressurize the right hydraulic system and reservoir (Ref 29-11-00).
(b)
Push the brake pedals fully forward and hold them in this position.
(c)
Measure the dimension "L" (Fig. 601) at the two indicator pin locations on each brake.
(d)
Replace the brake if a "L" dimension is zero (flush) or less.
NOTE: The wear dimension is zero if end of the pin does
____ not come out of the pin tube on the indicator bracket.
TASK 32-41-10-216-011
4. Landing Gear Brake Inspection (With the Wheel Removed)______________________________________________________
A. Procedure
S 216-012
(1)
Do the Prepare for Inspection procedure (Ref Par. 2).
S 216-013
(2)
Examine the brake assembly for these types of damage that can cause leaks or a malfunction of the brake:
(a)
Cracks that you can see.
(b)
Parts that are broken.
(c)
Parts that have much wear.
S 716-014
(3)
Do the checks that follow while you operate the brakes as follows:
(a)
Apply and release the brakes fully a minimum of five times and do these checks for each cycle of the brake: 1) Make sure that the brake operates and the pressure plate
moves freely while the brake operates. 2) Make sure that the pressure plate goes to the initial position after each time that you apply the brake.
3) Make sure that the adjuster pins go to their initial position after each time that you apply and release the brake.
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(b) Do a check to make sure that the brake clearance is not less than 0.060 inch at four locations around the perimeter of the brake. 1) Measure this clearance between the pressure plate assembly
and the adjacent rotor at four locations that are an equal distance apart.
NOTE: The minimum clearance can be 0.050 inch for a brake
____ that is in service.
TASK 32-41-10-866-022
5. Put the Airplane Back to Its Usual Condition
_____________________________________________
A. References
(1)
29-11-00/201, Pressurize/Depressurize Main Hydraulic System
(2)
32-00-15/201, Landing Gear Door Locks
B.
Access
(1)
Location Zones
731 Left Main Landing Gear
741 Right Main Landing Gear
C.
Procedure
S 866-017
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