757 FAULT ISOLATION/MAINT MANUAL
PARKING BRAKE MOTOR
PARKING BRAKE VALVE
PARKING BRAKE VALVE AND MOTOR, V41
F
ACCUMULATOR ISOLATION VALVE
DECAL
1
THERMAL RELIEF VALVE OR CHECK VALVE
1
ACCUMULATOR ISOLATION VALVE AND THERMAL RELIEF CHECK VALVE 1
SEE DECAL TO SEE IF CHECK
VALVE OR THERMAL RELIEF VALVE
G
IS INSTALLED
Parking Brake System - Component Location (Details from sht 2)
Figure 102 (Sheet 3)
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FAULT ISOLATION/MAINT MANUAL
CONTROL HOUSING FOR THE NOSE LANDING GEAR P62/P63
SEE J
PARKING BRAKE
ON INDICATOR
LIGHT- LIGHT, L456
PARKING
BRAKE ON
CONTROL HOUSING FOR THE NOSE LANDING GEAR
P62/P63
J
Parking Brake System - Component Location
Figure 102 (Sheet 4)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. GUN 051 ú
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PARKING BRAKE SYSTEM - ADJUSTMENT/TEST
______________________________________
TASK 32-44-00-825-001
1. Adjust the Parking Brake System_______________________________
A. General
(1)
The adjustment of the parking brake system contains the adjustment of the linkage mechanism. The adjustment of the linkage mechanism sets the contacts for the parking brake to engage and disengage correctly. This procedure also sets the electrical switch for the parking brake in the correct position to operate.
B.
Equipment
(1)
Rig Pins: Kit B20003-XX (Ref 20-10-24)
(a)
R1A - P/N B20003-26
(b)
LGB1 - P/N B20003-28
(2)
Ohmmeter - commercially available
C.
References
(1)
20-10-24/201, Rig Pins
(2)
29-11-00/201, Pressurize/Depressurize Main Hydraulic System
(3)
32-41-00/501, Hydraulic Brake System
D.
Access
(1)
Location Zones
119/120 Main Equipment Center
211/212 Control Cabin
(2)
Access Panel
119BL Main Equipment Center
E.
Prepare to Adjust the Linkage for the Parking Brake
(1)
Put the chocks below the wheels.
(2)
Remove the pressure from the main hydraulic system (Ref 29-11-00).
S 865-005
(3)
Open this circuit breaker on the main power distribution panel, P6, and attach a DO-NOT-CLOSE tag:
(a)
6F4, LANDING GEAR PARKING BRAKE VLV
S 495-145
S 865-004
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MAINTENANCE MANUAL
PARKING BRAKE
MECHANISM
SEE A B
CAPTAIN'S
BRAKE/RUDDER
PEDALS
CAPTAIN'S
BRAKE PEDAL RUDDER PEDAL
HOUSING A HOUSING
RIG PIN R1A
B
A
B INBD
LGB1 RIG PIN HOLE (INSTALL FROM THE OTHER FWD
SIDE OF THE HOUSING)
PARKING BRAKE MECHANISM PARKING BRAKE MECHANISM
B A
Parking Brake System Adjustment Figure 501 (Sheet 1)
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757
MAINTENANCE MANUAL
INCH0.72
FWD
A-A
BRAKE NUT BELLCRANK
THE PAWL STOP IS SHOWN IN THE BRAKE "ON" POSITION BUT THE PAWL IS NOT ENGAGED
THE PAWL STOP IS SHOWN IN THE BRAKE "OFF" POSITION
Parking Brake System Adjustment
Figure 501 (Sheet 2)
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MAINTENANCE MANUAL
F. Adjust the Linkage for the Parking Brake (Fig. 501)
S 435-006
(1)
Install the rudder rig pin, R1A, through the two arms and the structure of the captain's rudder pedal (Detail A).
(a)
If it is necessary to install the rig pin, move the arms to align the holes.
S 825-007
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