II  II

D

12. HINGE/PIN 13. HINGE/PIN

(12.) (13.)
I-I J-J

Forward/Aft Cargo Door Wear Limits
Figure 601 (Sheet 5)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
DESIGN LIMITS WEAR LIMITS PERMITTED MAXIMUM
DIAMETER
INDEX WEAR DIAMETER
PART NAME DIM.
NO.
MINIMUM MAXIMUM DIMENSION CLEARANCE INCHES INCHES INCHES INCHES (mm) (mm) (mm) (mm)
1.3750 1.3850
LATCH CAM ID  
5
(34.93) (35.18)
0.111
1
(2.82)
1.3340 1.3350 1.3240
PIN OD (33.88) (33.91) (33.63)
1.6030 1.6050 1.608
BUSHING ID (40.72) (40.77) (40.84)
0.0115
2
(0.29)
1.5985 1.5990 1.5965
LATCH CAM OD (40.60) (40.61) (40.55)
0.6265 0.6275
BUSHING ID  
2
(15.91) (15.94)
3
0.6220 0.6230 0.6200

BUSHING OD (15.80) (15.82) (15.75)
0.6250 0.6270
BUSHING ID  
2
(15.88) (15.93)
4
0.6200 0.6230 0.6180

SHAFT OD (15.75) (15.82) (15.70)
0.8750 0.8770
BUSHING ID  
2
(22.23) (22.28)
5
0.8700 0.8730 0.8680

SHAFT OD (22.10) (22.17) (22.05)
0.3281 0.3321 0.3436
HOUSING ID (8.33) (8.44) (8.73)
0.046
6
(1.17)
0.3070 0.3100 0.2980
PLUNGER OD (7.80) (7.87) (7.57)
0.3125 0.3140 0.3280
BUSHING ID (7.94) (7.98) (8.33)
0.03
7
(0.76)
0.3080 0.3100 0.2980
PIN OD (7.82) (7.87) (7.57)
0.1270
0.1320 0.1500
TRIGGER ID (3.23) (3.35) (3.81)
0.03
8
(0.76)
0.1220 0.1250 0.1200
PIVOT PIN OD (3.10) (3.18) (3.05)
PART WORN REPLACE  PART WORN REPAIR  REPAIR INSTR 
X  1 
X  1 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 

Forward/Aft Cargo Door Wear Limits
Figure 601 (Sheet 6)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
INDEX

NO.
9
10
11
12
13

A
747-400
MAINTENANCE MANUAL

OD OD ID OD ID ID ID OD ID OD  DESIGN LIMITS DIAMETER  WEAR LIMITS  PART WORN REPLACE X  PART WORN REPAIR  REPAIR INSTR 
(mm) MAXIMUM DIAMETER CLEARANCE INCHES (mm) INCHES PERMITTED DIMENSION WEAR (0.35) 0.014 (6.12) 0.2410 (6.47) 0.2550 (9.29) 0.3660 (9.65) 0.3800 (0.35) 0.014 (2.84) 0.112 (4.39) 0.173(28.54) 1.1240 (21.15) 0.833 (12.60) 0.4960 3 6 2 
(mm) (mm) INCHESINCHES MINIMUM MAXIMUM (6.18) 0.2435 (6.17) 0.2430 (6.42) 0.2530 (6.35) 0.2500 (9.36) 0.3685 (9.34) 0.3680 (9.60) 0.3780 (9.52) 0.3750 (22.16) 0.87270.8707 (22.11) (23.62) 0.93000.8820 (22.40) (28.04) 1.1040 (27.53) 1.0840 (12.68) 0.4995 (12.66) 0.4985 (12.76) 0.5025 (12.73) 0.5015 44 
X X 
X  X  1 
X X  1 1 7 
X X  1 1 7 7 
X  1 7 

PART NAME DIM.
BUSHING BUSHING LATCH PIN HOOK PIN HINGE PIN HINGE PIN
REPAIR THE PART. REFER TO OVERHAUL MANUAL
REPLACE THE BUSHING WHEN THE TEFLON LAYER IS NOT SATISFACTORY
DAMAGE THROUGH THE CHROME LAYER IS NOT SATISFACTORY
SMALL DIAMETER: MIN = 0.6905 INCH (17.53 mm)
MAX = 0.7110 INCH (18.05 mm)
LARGE DIAMETER: MIN = 0.9905 INCH (25.15 mm)
MAX = 1.0110 INCH (25.67 mm)

SEE SECTION B-B FOR THE APPROVED DIMENSION OF THE LATCH CAM
MAXIMUM DAMAGE IS 0.040 INCH (1.01 mm) AT ANY LOCATION AROUND THE PIN. ONLY ONE DAMAGED LOCATION IS PERMITTED FOR EACH PIN
THE HINGE AND PIN MAY BE OVERSIZED A MAXIMUM OF 0.0325 INCH (0.82 mm) MORE THAN THE MAXIMUM DESIGN LIMITS PER CMM REPAIR
Forward/Aft Cargo Door Wear Limits Figure 601 (Sheet 7)
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