(2)
Replace any pulleys that match the description in Fig. 602.
S 216-036
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A
747-400
MAINTENANCE MANUAL
CABLE STRAND
(EXAMPLE)
(7 WIRES)
EACH OUTER WIRE WORN
7X7 CABLE WIRE LESS THAN 40%
(WORN AREAS NOT BLENDED)
CABLE STRAND
(EXAMPLE) 3
(19 WIRES)
2
4 EACH OUTER WIRE WORN 40-50% 7x19 CABLE (WORN AREAS ARE BLENDED)
1
EACH WIRE IS WORN MORE THAN 50%
1 VISIBLE SPACE BETWEEN WIRES.
EXAMPLE 0F INTERNAL WEAR
2 WEAR CONDITION RESULTING IN BLENDED SURFACES BETWEEN WIRES.
3 THE OUTER WIRE WEAR AREA ON CABLE STRAND. A VISIBLE SPACE BETWEEN WIRES 1 OR A FULLY BLENDED SURFACE 2 SURFACE OVER APPROXIMATELY SIX WIRES INDICATES 50 PERCENT WIRE WEAR.
4 CABLE WEAR MAY OCCUR ON ONE SIDE ONLY OR ON FULL CIRCUMFERENCE. CABLE WEAR CAN EXTEND ALONG THE CABLE FOR A DISTANCE EQUAL TO USUAL CABLE TRAVEL.
Cable Wear Patterns
Figure 601
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A
747-400
MAINTENANCE MANUAL
CABLE TENSION TOO HIGH PULLEY NOT ALIGNED CORRECTLY
PULLEY GROOVE WITH EXCESSIVE WEAR CABLE NOT ALIGNED CORRECTLY
PULLEY WILL NOT TURN OR
NORMAL CONDITION
Pulley Wear Patterns
Figure 602
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747-400 MAINTENANCE MANUAL
ELECTRICAL BONDING - INSPECTION/CHECK
_____________________________________
TASK 20-22-01-766-015
1. Electrical Bonding - Inspection/Check_____________________________________
A. General
(1) Refer to SWPM 20-20-00 Electrical Bonding and Grounding in the Standard Wiring Practice Manual D6-54446.
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747-400 MAINTENANCE MANUAL
SPECIFICATIONS AND MATERIALS - MAINTENANCE PRACTICES
____________________________________________________
1. General_______
A. This procedure has one task:
(1) Specifications and Materials
TASK 20-30-00-802-001
2. Specifications and Materials____________________________
A. General
(1)
Specifications and materials sections contain lists of consumable materials that can be necessary during regular maintenance of the airplane.
(2)
Whenever possible, consumable materials will be referenced in the Maintenance Manual by a material specification.
(3)
In the event a material is shown with no material specification, the material will be a specific vendor product or it will be commercially available.
(4)
For specific vendor information on a product, you should refer to the U-file Bulk Materials List. Or, you should refer to the qualified products list of the applicable material specification.
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