(1)
G32010 - Puller Equipment, Axle Sleeve
C.
Standard Tools and Equipment
(1)
Heat Blanket - Electrical (300°F maximum)
(2)
Thermometer - Surface Measurement (0° - 300°F)
D.
Consumable Materials
(1)
C00259 Enamel - Primer, BMS 10-11
(2)
D00633 Grease - BMS 3-33 (preferred)
(3)
D00013 Grease - MIL-G-23827 (optional)
(4)
G00829 Ice - Dry (Commercial Grade)
E.
References
(1)
AMM 32-00-30/201, Landing Gear Door Locks
(2)
AMM 32-11-11/601, Wing Landing Gear
(3)
AMM 32-41-15/401, Landing Gear Brake Unit
(4)
AMM 32-42-04/401, Antiskid Transducer
(5)
AMM 32-45-01/401, Main Gear Tire/Wheel Assembly
(6)
AMM 32-45-03/601, Wheels
(7)
AMM 32-45-03/801, Wheels
F.
Access
(1)
Location Zone
735 Wing Landing Gear, LH
745 Wing Landing Gear, RH
G.
Procedure
S 224-020
(1)
Examine the axle sleeve:
(a)
Examine the axle sleeve for damage.
1) Replace the axle sleeve if you cannot repair it (AMM 32-45-03/801).
(b)
Do a check of the fit of the axle sleeve (AMM 32-11-11/601, and AMM 32-45-03/601).
S 224-021
(2)
Examine the brake housing bushing:
(a)
Examine the brake housing bushing for damage. 1) Replace the brake housing bushing if you cannot repair it.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-11-32
ALL ú ú 01 Page 409 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b) Do a check of the fit of the brake housing bushing
(AMM 32-11-11/601).
S 884-022
(3) Apply thermal loads to the axle and the axle sleeve:
WARNING:_______DO NOT GET THE DRY ICE ON YOUR SKIN. THE DRY ICE IS FROZEN CARBON DIOXIDE AT A TEMPERATURE OF APPROXIMATELY -120°F. THE COLD TEMPERATURE OF THE CARBON DIOXIDE CAN CAUSE INJURY TO PERSONS.
(a) Decrease the temperature of the axle with the dry ice.
1) Apply the dry ice to the inner diameter and the outer diameter of the axle.
NOTE: When the steam from the dry ice almost stops, the
____ axle temperature will be near the temperature of the dry ice (-120°F). This is the recommended condition.
2) Add more dry ice to the inner diameter of the axle to keep the axle at a constant temperature.
(b) Put the electrical heat blanket around the axle sleeve (Fig. 401, View B).
CAUTION: DO NOT PERMIT THE TEMPERATURE OF THE AXLE COMPONENTS TO
_______ BECOME 300°F FOR MORE THAN 180 MINUTES. THE MATERIALS FOR THE AXLE COMPONENTS CAN BECOME WEAK IF THE THERMAL LOADS ARE TOO LARGE. WEAK AXLE COMPONENTS CAN HAVE A FAILURE DURING OPERATION.
(c) Permit the temperature of the axle sleeve to become approximately 250°F. 1) Use the thermometer to measure the temperature of the axle
sleeve.
S 644-023
(4)
Apply a layer of grease around the axle on the surfaces which will engage with the axle sleeve (Fig. 401).
(a)
Do not remove the grease from the outer edge of the axle recess (Fig. 401).
(5)
Remove the electrical heat blanket from the axle sleeve.
S 094-024
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-11-32
ALL ú ú 01 Page 410 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(6) S 424-025Immediately install the axle sleeve before the temperatures of the sleeve and the axle go to the ambient temperature.
CAUTION:_______ DO NOT HIT THE SLEEVE DIRECTLY WITH THE HAMMER. CAUSE DAMAGE TO THE AXLE SLEEVE. THIS WILL
(a) (b) (c) (d) If it is necessary, carefully use a hammer with a block of wood to move the sleeve.Make sure the retention pin hole in the sleeve aligns with the hole in the axle.Make sure a minimum clearance of 0.120 inch is between the flat edges of the saw clearance (Fig. 401).If the axle sleeve goes too far on the axle, use the axle sleeve puller to put the sleeve in its correct position.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 起落架 LANDING GEAR 2(71)
