(d)
Blisters.
(e)
Too much play in the bearings or loose bearings.
(2)
Make an inspection of the pulleys during the operation cycle.
(a)
Make sure that there are no hard points when the pulleys turn.
(b)
Make sure that the cable does not skid on the pulleys.
(c)
Check of the eccentricity.
Pulley Wear Patterns
Figure 605/TASK 20-24-12-991-006
1EFF : ALL 1 20-24-12 Page 610
1 1 Feb 01/98
1 1
1CES 1
-------------------------------------------------------------------------------| PULLEY MINOR MAX. ECCENTRICITY MAX. ECCENTRICITY | | DIAMETER AT TOP OF GROOVE AT BOTTOM OF GROOVE| |-----------------------------------------------------------------------------| |- Less than or equal to 0.011 in. (0.30 mm) 0.005 in. (0.15 mm) | | 1.181 in. (30 mm) | |- from 30 mm to less than 0.015 in. (0.40 mm) 0.007 in. (0.20 mm) | | 3.149 in. (80mm) | |- more than or equal to | | 3.149 in. (80 mm) 0.019 in. (0.50 mm) 0.007 in. (0.20 mm) | -------------------------------------------------------------------------------
(3) Make an inspection of the pulleys after run-out.
(a) For each turn of the pulley, make sure that the sideways run-out is not more than:
-0.25 mm (0.0098 in.) for pulleys with a diameter less than 80 mm (3.1496 in.),
-0.30 mm (0.0118 in.) for pulleys with a diameter of 80 mm (3.1496 in.) or more.
INSTALLATION OF EXPANSION JOINTS - MAINTENANCE PRACTICES
________________________________________________________
TASK 20-26-00-910-002
Installation of Expansion Joints
1. Reason for the Job
__________________
This topic shows a typical installation of the expansion joints. This
R typical installation prevents damage to the bleed duct seals and subsequent
R leakage.
2. Job Set-up Information
______________________
A. Consumable Materials
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
Material No. 04-007 USA MIL-M-7866
MOLYBDENUM DISULFIDE POWDER (Ref. 20-31-00)
Material No. 06-012
LUBRICANT (Ref. 20-31-00)
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
20-26-00-991-001 Fig. 201 R 20-26-00-991-003 Fig. 202
3. Job Set-up
__________
Subtask 20-26-00-210-050
A. Not Applicable
4. Procedure
_________
Subtask 20-26-00-420-050
A. Installation of Expansion Joints
(Ref. Fig. 201/TASK 20-26-00-991-001)
(1) Visual inspection
(a) Make sure that the seal housings on the female duct and the
R contact surface on the male duct are clean and that there are no
R deposits or lubricant. If you find dirt, deposits or lubricant,
R you must clean, flush and dry the surface(s) before you install a
R new duct seal.
R (b) Visually examine the seal contact surfaces on the male and female
R duct for deformation or too much wear.
R
(2) Seal installation
NOTE : Remove the seal(s) from the packaging immediately before you____
install it (them). Make sure that you do not cause
contamination of the seal with chemicals or dust particles
during its installation.
R (a) For ABS0737-XXX seals and Pre ABS1040-XXX
R
R 1 Carefully install the seal ABS0737-XXX in the housing grooves._
R Make sure that you install the seal in the correct direction
R and in the correct position.
R NOTE : ABS0737-XXX seal type is the recommended replacement____
R P/N. Other seal types found in service are:
R - NSA8054-XXX-08 with NSA8054-XXX-09,
R - ABS0605-XXX,
R - ABS0632-XXX.
R
R (b) For ABS1040-XXX
R (Ref. Fig. 201/TASK 20-26-00-991-001, 202/TASK 20-26-00-991-003)
R
R 1 Install the outer ring (1) into the duct groove._
R Installation of Expansion Joints Figure 201/TASK 20-26-00-991-001 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM STANDARD PRACTICES-AIRFRAME(80)
