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S 915-023
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 865-025
(2) Put the WIPER switch on the P5 panel in the LOW position and do the steps that follow: (a) Make sure the wiper operates at a minimum of 130 sweeps per minute.
NOTE:____ A sweep is considered the travel of a wiper from the park position to the top of the window, or from the top of the window to the park position.
(b) (c) Make sure the wiper moves smoothly and effectively.Make sure the wiper sweep is on the windshield and that the blade does not go over the windshield seal (Fig. 501).
S 865-024
(3) Put the WIPER switch on the P5 panel in the HIGH position and do the steps that follow: (a) Make sure the wiper operates at a minimun of 185 sweeps per minute.
(b) (c) Make sure the wiper operates smoothly and effectively.Make sure the wiper sweep is on the windshield and that the blade does not go over the windshield seal (Fig. 501).
S 865-026
(4) Put the WIPER switch in the OFF position and do the steps that follow:
(a) Make sure the wiper arm is on the lift block to hold the wiper blade away from the windshield frame surface.
S 905-027
(5) If wiper speed was not within the limits, replace the motor-converter (Ref 30-42-02).
S 825-028
(6) If the wiper sweep or park position was not correct (Fig. 501), adjust them as follows:
NOTE:____ If wiper sweep will not adjust, but is still incorrect, replace the motor-converter (AMM 30-42-02/401).
(a) If it is necessary, remove the sealing compound from the head of the pressure adjusting bolt on the wiper arm hub (View A-A).
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30-42-00
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(b)
If it is necessary, remove the sealing compound from the heads of the screws, bolts, and shaft tightening slot on the wiper arm hub.
(c)
Loosen the pressure adjusting bolt to release the pressure from the wiper arm.
(d)
Loosen the hub clamping screw.
CAUTION:_______DISCARD THE HUB HOLDDOWN BOLT. THE BOLT CAN BECOME LOOSE IF YOU USE THE BOLT AGAIN.
(e)
Remove the hub holddown bolt and flat washer. Discard the hub holddown bolt.
(f)
Remove the wiper arm, and turn the adjustment sleeve on the motor-converter shaft to get the correct sweep and park position. Install the adjustment sleeve and wiper arm on the motor-converter shaft.
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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(134)
