Main Gear Damper Wear Limits 501
32-11-81 Figure 601 (Sheet 1) Aug 15/72
Page 602
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
501 Main Gear Damper Wear Limits
Aug 15/72 Figure 601 (Sheet 2) 32-11-81
Page 603
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Main Gear Damper Wear Limits 501
32-11-81 Figure 601 (Sheet 3) Oct 20/85
Page 604
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
MAIN GEAR AXLE THREAD AND AXLE NUT - INSPECTION/CHECK
1. General
A. This data has illustrations and a wear limit chart. No procedure is given in this piece that permits access for inspection. For this data, refer to Main Gear Wheel and Tire -Removal/Installation.
2. Main Gear Axle Thread and Axle Nut Inspection/Check
A. Special Tools and Equipment
(1)
Axle Thread NO-GO Gage Tool for pitch diameter.
(a)
Precise Tool NG2.8750-16 PTG THREADSNAP, used to examine the pitch diameter of the axle thread with undersized configuration.
(b)
Precise Tool NG2.9375-16 PTG THREADSNAP, used to examine the pitch diameter of the axle thread with original configuration.
(2)
Micrometer of appropriate size and accuracy, used to measure the major diameter of the axle thread.
(3)
Axle Nut NO-GO Gage Tool for minor diameter.
(a)
Plug Gage, Landing Gear Nut, F80198-12, used to examine the minor diameter of the axle nut with original configuration or equivalent vendor tool Class X, 2.8697 Go/2.8774 NoGo with handle.
(b)
Plug Gage, Landing Gear Nut, F80198-13, used to examine the minor diameter of the axle nut with undersized configuration or equivalent vendor tool Class X, 2.8141 Go/2.8163 NoGo with handle.
(4)
Axle Nut NO-GO Gage Tool for pitch diameter.
(a)
NO-GO Gage, 2-15/16-16 UNS 3B NoGo member only with handle, pitch diameter 2.9024, used to examine the pitch diameter of the axle nut with original configuration.
(b)
NO-GO Gage, 2-7/8-16 UNS 3B NoGo member only with handle, pitch diameter 2.8379, used to examine the pitch diameter of the axle nut with undersized configuration.
(5)
GJ-5/PD-MD -- Axle nut internal thread gage tool, Johnson Gage Co., (V74979) (Optional).
NOTE: All the NO-GO gage tools, except for the F80198-XX, can be purchased from PRECISE TOOL and GAGE CO. INC., 13300 S.E. 30th St., Suite #201, Bellevue, WA 98005 USA, Tel. No. (206) 746-1234/623-1120, Fax No. (206)747-8131.
B. Do a check on the main gear axle thread and axle nut wear limits (Fig. 601).
CAUTION: ON AIRPLANES WITH REWORKED AXLES, MAKE SURE THERE IS A MARKING WHICH READS "CAUTION - SPECIAL AXLE NUT REQUIRED" ALONG THE UPPER OUTER END OF THE AXLE SLEEVE. THE MARKING WILL CONSIST OF BLACK LETTERS ON A YELLOW BACKGROUND. IF MARKING IS NOT ON THE AXLE, THE INCORRECT AXLE NUT MAY BE INSTALLED. IF THE INCORRECT AXLE NUT IS INSTALLED, THE WHEEL MAY FALL OFF DURING TAKEOFF OR LANDING.
500
Feb 01/95 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-11-85 Page 601
Main Gear Axle Wear Limits 500
32-11-85 Page 602 Figure 601 (Sheet 1) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Oct 20/91
501 Main Gear Axle Wear Limits
Feb 01/96 Figure 601 (Sheet 2) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-11-85 Page 603
MAIN GEAR FORWARD TRUNNION BEARING - REMOVAL/INSTALLATION
1. General
A. The main gear forward trunnion bearing must be replaced if damaged or worn beyond limits specified in 32-11-0.
B. The bearing is an interference fit and the complete bearing assembly must be removed before the bearing can be installed by shrinking.
2. Equipment and Materials
A. Holding Fixture - Main Gear Forward Trunnion Bearing - F80096 or equivalent
B. Spanner Wrench - Main Gear Forward Trunnion Bearing Nut - F80018-1 or equivalent
C. Mandrel, Installation Bearing - ST918 or equivalent
D. Equipment for containing and handling liquid nitrogen
E. Corrosion Preventive Compound - MIL-C-16173, Grade 2 or MIL-C-11796, Class 3
F. Rivets MS20427 M4-10
3. Remove Main Gear Forward Trunnion Bearing
A. Remove main gear trunnion link and remove trunnion link bearing assembly per 32-11-11.
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