(2)
D00153 Fluid, Hydraulic - BMS 3-11
(3)
D00378 Grease, Wheel Bearing -Aeroshell 22 (Preferred)
Mobilgrease 28 (Optional)
(4)
D50005 Grease, Wheel Bearing -Mobil Aviation Grease SHC 100 (Optional)
(5)
D00388 Grease, Wheel Bearing -MIL-G-3545 Aeroshell 5 (Optional)
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C. Parts
~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT |FIG | ITEM | ................................................................................ | 401 | 1 | Screw | 32-41-10 | 01 | 407 | | | 4 | Brake Assembly | | | 7 | | | | | | | | | | 6 | Brake Disconnect Fitting | | | 415 | | | | Brake Valve Coupling | | | 420 | | | | Backup Ring | | | 425 | | | | Packing (O-ring) | | | 430 | | | 7 | Cap - End | 32-11-01 | 10 | 140 | | | 8 | Cotter Pin | | | 122 | | | 9 | Nut | | | 125 | | | 10 | Washer | | | 124 | | | 11 | Bushing | 32-41-10 | 01 | 375 | | | 12 | Bolt | 32-11-01 | 10 | 123 | | | 13 | Pin | | | 145 | 2......…........…...................................…...........…....….........1
D. References
(1)
AMM 07-11-03/201, Jacking Airplane Axles
(2)
AMM 12-21-14/301, Main Gear and Actuating Mechanisms
(3)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
(4)
AMM 32-11-26/601, Main Gear Axle
(5)
AMM 32-41-00/501, Hydraulic Brake System
(6)
AMM 32-41-08/401, Brake Disconnect Valve
(7)
AMM 32-44-00/001, Parking Brake System
(8)
AMM 32-45-01/401, Main Gear Wheel and Tire
E.
Access
(1)
Location Zones
731 Left Main Landing Gear
741 Right Main Landing Gear
F.
Prepare for Installation
S 864-020
(1)
Make sure that hydraulic pressure was removed from the left, right, and center hydraulic systems (AMM 29-11-00/201).
S 214-021
(2)
Examine the part of the axle (5) that you can see for scoring, galling, or corrosion.
NOTE: The wear limits for the main gear axles are in
____
AMM 32-11-26/601.
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S 494-023
(3) Make sure that the axle protector (cap and sleeve) is installed.
S 644-024
WARNING: APPLY A THIN LAYER OF GREASE TO THE INTERFACE SURFACES OF THE
_______ BRAKE AND AXLE ONLY. DO NOT APPLY GREASE IN THE SPACE BETWEEN THE AXLE BUSHINGS ON THE BRAKE ASSEMBLY. IF YOU APPLY TOO MUCH GREASE A FIRE CAN OCCUR WHEN THE BRAKES BECOME HOT.
(4) Apply a thin layer of wheel bearing grease to the brake sleeve and to the axle bushings on the brake assembly.
S 614-045
(5) Make sure that the brake (4) that you will install is filled with ú hydraulic fluid and bled (AMM 32-41-00/201).
NOTE: The brake valve coupling (zero leak type) which is installed
____ in the brake, allows the brake to be pre-filled and bled before it is installed on the airplane.
G. Install the Main Gear Wheel Brake (Fig. 401, 402))
S 424-046
CAUTION: BE SURE THAT SLING AND HOIST EQUIPMENT WILL HOLD THE WEIGHT OF
_______ EQUIPMENT BECAUSE IT WEIGHS APPROXIMATELY 218 POUNDS (STEEL BRAKES OR 145 POUNDS (CARBON BRAKES).
(1)
Use the brake sling and position the brake (4) on the axle (5).
S 434-028
(2)
Install the brake hydraulic line disconnect (6) to the brake (4). (AMM 32-41-08/401).
(a)
Apply a light coating of BATCO X8401-2 grease on the brake half of the brake disconnect, from the diametrical surface above the upper retaining ring to the top of the brake half.
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(b)
Before installing the hose half of the disconnect, apply a light coating of BATCO X8401-2 grease on the underside of the mounting flange of the hose half.
(c)
Make sure the brake coupling half of the brake disconnect (6), backup rings, and the O-ring are installed in the brake before you install the hose half of the brake disconnect (6).
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