(2)
B00130 Solvent Spec. TT-I-735 Isopropyl Alcohol
(3)
B00102 Fine-grain abrasive
(4)
G00034 Clean cloth
B. Access
(1) Location Zone
200 Passenger Cabin
C. Repair the Handset On-Hook Magnet
S 308-003
(1) Do these steps to repair the magnet:
(a)
Get to the aft side of the cradle assembly.
(b)
Make sure that the magnet assembly is loose or fell off from the recess.
(c)
Remove the old adhesive from the flange of the magnet assembly and recess at the rear of the cradle assembly.
(d)
Lightly sand the two surfaces and rub with a clean cloth made moist with isopropyl alcohol.
NOTE: Correct preparation of the faying surfaces is necessary for correct adhesion.
(e)
Make sure that the red dot is identified on the end of the magnet assembly that looks for north.
(f)
Make sure that the flange of the magnet assembly is installed in the center of the recess.
(g)
Apply a thin layer of adhesive to each faying surface.
(h)
Put magnet assembly into the recess with the red dot mark at the end as shown on Fig. 801.
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MAINTENANCE MANUAL
RED DOT (NORTH-SEEKING END)
MAGNET POSITIONED IN RECESS
ATTENDANT HANDSET CRADLE (REAR SIDE)
Cabin Interphone Handset On-Hook Magnet - Location
Figure 801
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MAINTENANCE MANUAL
(i) Apply pressure to magnet during the time necessary to dry and for a continuous line of adhesive is made around the two surfaces that touch.
NOTE: Assemble immediately after you apply the adhesive to the faying surfaces. Adhesives listed under BMS 5-19 class B-1/2 with a work life of less than 2 hours dries sufficiently in 4 hours if heat is applied to bring the bond line temperature to approximately 120°F. Make sure the temperature is not more than 140°F.
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757 MAINTENANCE MANUAL
GROUND CREW CALL SYSTEM - DESCRIPTION AND OPERATION
___________________________________________________
General
_______
A. The ground crew call system allows personnel in the flight compartment and ground servicing personnel to gain each others attention so they may communicate using one of the interphone systems. The system uses 28v dc power obtained from a circuit breaker on the overhead panel P11.
B. The ground crew call system provides a signaling capability between the flight compartment and nose landing gear area.
C. The attention of personnel outside the airplane is gained by pressing the GND CALL switch on the pilots' call panel. The ground crew call horn will sound when this is done.
D. From the nose landing gear, the attention of personnel in the flight deck is gained from outside the airplane by pressing the FLIGHT DECK CALL SW button on the P62 CONTROL PANEL. The GND CALL light on the pilots' call panel comes on, and a single high chime sounds in the flight compartment.
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