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A 757 MAINTENANCE MANUAL
COUNTER BORE FOR
ADJUSTMENT SLEEVE SLOT
BUSHING MOVEMENT ONE TOOTH BETWEEN OUTPUT SHAFT AND BUSHING APPROXIMATELY 2 3/4 INCHES MOVEMENT AT BLADE ATTACHMENT POINT
ONE TOOTH BETWEEN BUSHING AND HOUSING APPROXIMATELY 3 1/4 INCHES
AND BUSHING, THEN TOOTH COUNTERCLOCKWISE BETWEEN BUSHING AND HOUSING ONE TOOTH CLOCKWISE BETWEEN OUTPUT SHAFT APPROXIMATELY 1/2 INCH
APPROXIMATE MOVEMENT CORRELATION CHART
PUT THE SLOTS LESS THAN 90` APART WHEN YOU INSTALL THE WIPER ARM HUB TO THE ADJUSTMENT SLEEVE
Windshield Wiper Arm and Blade
Figure 402
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757 MAINTENANCE MANUAL
S 824-037
(9) Lift the wiper arm and blade (just enough to go over the lift block) and put them on the lift block (parked position).
S 434-038
CAUTION:_______DISCARD THE OLD HUB HOLDDOWN BOLT. THE HUB HOLDDOWN BOLT CAN BECOME LOOSE IF USED AGAIN.
(10) Install a new hub holddown bolt and flat washer.
(a) Tighten the hub holdown bolt to 20-30 inch-pounds.
S 434-039
(11)
Tighten the hub clamping screw to 60-100 inch-pounds.
S 434-040
(12)
Lightly tighten the pressure adjusting bolt.
S 034-041
(13)
Remove the pad between the wiper arm and windshield.
S 824-042
(14)
Examine and adjust the wiper arm pressure, sweep, and park position (AMM 30-42-00/501).
S 394-043
(15)
Apply sealant to the shaft tightening slot, the boltheads, and the screw heads (AMM 51-31-01/201).
F. Put the Airplane Back to Its Usual Condition
S 864-071
(1)
Put the WIPER switch to OFF.
S 864-064
(2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11R13, WSHLD WIPER LEFT
(b)
11R22, WSHLD WIPER RIGHT
S 864-065
(3) Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P37 panel:
(a)
37E3, WINDOW HTR 2L
(b)
37E4, WINDOW HTR 3L
(c)
37J2, WINDOW HTR 1R
S 864-066
(4) Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P70 panel:
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本文链接地址：757 AMM 飞机维护手册 防冰和排雨 CHAPTER 30 - ICE AND RAIN PROTECTION(150)
