Page 210 Doc # 6.02.01 09 Jan 2003 Rev. 4
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Landing Gear
AMM
7. Bleed the Brake System
A. Equipment
Item Quantity Reference
Pressure bleed equipment with MIL-H-5606A brake fluid. 1 Commercial.
Transparent overflow pipe and container. 1 Commercial.
B. Bleeding Procedure
This procedure bleeds the air from the braking system on one side of the airplane (left or right). If necessary, perform this procedure on both braking systems (left and right).
Detail Steps/Work Items Key Items/References
(1) Clean the area of the brake fluid reservoir cap. On the co-pilot’s rudder pedal assembly. Refer to Figure 3.
(2) Remove the cap.
WARNING: DO NOT GET BRAKE FLUID ON YOU. BRAKE FLUID CAN CAUSE DISEASE. CAUTION: CLEAN UP SPILT BRAKE FLUID IMMEDIATELY. BRAKE FLUID CAN DAMAGE PAINT AND OTHER MATERIAL.
(3) Connect the transparent overflow pipe to the reservoir. Put the free end of the pipe in a container.
(4) Clean the area around the bleed nipple below the brake cylinder. Refer to Figure 4.
(5) Connect the pressure bleed equipment to the bleed nipple below the brake cylinder. Use only MIL-H-5606A brake fluid.
(6) Open the bleed nipple about 1/2 to 1 turn.
(7) Use the pressure bleed equipment to fill the brake system. Monitor the fluid coming from the reservoir for air bubbles.
(8) Operate the parking brake ON and OFF 10 to 20 times to remove air from the system. Continue bleeding the system until the fluid has no bubbles.
Doc # 6.02.01 Page 211
Rev. 4 09 Jan 2003
32-40-00
AMM
DA 40 Series
Detail Steps/Work Items Key Items/References
(9) Operate the pilot’s brake pedals many times to remove air from the system. Continue bleeding the system until the fluid has no bubbles.
(10) Operate the co-pilot’s brake pedals many times to remove air from the system. Continue bleeding the system until the fluid has no bubbles.
(11) Remove the pressure bleed equipment. Close the bleed nipple and install the protective cap.
(12) Remove the overflow pipe and container.
(13) Measure the fluid level in the reservoir. If necessary, add or remove fluid. The correct level is 12 mm (0.5 in.) below the top of the filler hole. When the level is 25 mm (1 in.) below the top of the filler hole you must add fluid to the correct level. Refer to Figure 2.
(14) Install the reservoir cap.
(15) Do a function test of the brake system.
32-40-00
Landing Gear
AMM
8. Condition the Brake Linings
The brake linings are a non-asbestos organic material. You must condition new brake linings. Conditioning gives a thin layer of glaze at the friction surface. Usual brake usage keeps the layer of glaze for the life of the brake lining.
Light brake use can wear off the glaze. This reduces brake performance. If the glaze wears off, do the conditioning procedure.
Detail Steps/Work Items Key Items/References
WARNING: DO NOT TAXI THE AIRPLANE UNLESS YOU HAVE BEEN TRAINED TO TAXI AND YOU ARE AUTHORIZED BY YOUR AIRWORTHINESS AUTHORITY. CAUTION: MAKE SURE THAT THE BRAKES OPERATE CORRECTLY WHILE YOU TAXI THE AIRPLANE, IF THE BRAKES FAIL, YOU MUST BE ABLE TO STOP THE AIRPLANE WITHOUT HITTING ANY PERSONS, EQUIPMENT OR OTHER OBSTACLES.
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