CAUTION:_______DISCARD THE HUB HOLDDOWN BOLT. THE BOLT CAN BECOME LOOSE IF YOU USE THE BOLT AGAIN.
(g)
Install a new hub holddown bolt and the flat washer. 1) Tighten the hub holddown bolt to 20-30 inch-pounds.
(h)
Tighten the hub clamping screw to 60-100 inch-pounds.
(i)
Do the Wiper Arm Pressure Adjustment/Test paragraph.
H. Procedure - Wiper Arm Pressure Adjustment/Test
S 915-047
CAUTION:_______DO NOT OPERATE THE WIPERS ON A DRY WINDSHIELD. THE WINDSHIELD CAN BE DAMAGED BY THE WIPER MOVEMENT.
(1)
Supply water to keep the windshield wet when the wipers are in operation.
S 865-030
(2)
Put the WIPER switch on the P5 panel in the LOW position.
S 865-031
(3)
Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags to stop the windshield wipers in midstroke:
(a)
11R13, WSHLD WIPER LEFT
(b)
11R22, WSHLD WIPER RIGHT
(4)
Stop the flow of water to the windshield.
S 485-033
(5)
Connect a spring scale at the place where the wiper blade is attached to the arm.
S 915-032
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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 - Adjustment
Figure 502
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S 735-034
CAUTION:_______DO NOT LIFT THE ARM TOO FAR. IF YOU LIFT THE ARM TOO FAR, DAMAGE TO THE ARM CAN OCCUR.
(6)
Slowly pull the scale perpendicular from the windshield surface, until the arm is off of the windshield surface or touches at only one tip. Make sure the scale indicates 15 |1 pounds.
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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(135)
