(2)
Remove the access panel from the inner surface of the door.
(3)
Lubricate the cargo door (Fig. 301).
(4)
Install the access panel on the inner surface of the door.
(5)
Install the insulation on the inner surface of the door.
S 013-003
S 643-004
S 423-005
S 423-006
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A
737-300/400/500MAINTENANCE MANUAL
CARGO DOOR SEE A
CABLE MECHANISM BALANCE SEE D
LATCH ROLLER SEE B SPRING BALANCE MECHANISM
SEE E
LATCH ROLLER
SEE B
BEARING HOUSING TORQUE TUBE SEE C FWD
CARGO DOOR
A 1
1 2 AIRPLANES WITH UPLATCH AIRPLANES WITH COUNTERBALANCE MECHANISM
Figure 301 (Sheet 1) Cargo Door Lubrication
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A
737-300/400/500
MAINTENANCE MANUAL
SEE B LATCH ROLLER FOR CLARITY REMOVED INNER SKIN
FWD INBD SEE C TORQUE TUBE BEARING HOUSING SEE B SEE F LATCH ROLLER ROLLER COUNTER BALANCE
ACARGO DOOR 2
Figure 301 (Sheet 2) Cargo Door Lubrication
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A 737-300/400/500MAINTENANCE MANUAL
LATCH ROLLER
FLUSH
MIL-G-23827
(1 LOCATION)
LATCH ROLLER 1 POINT
B3
TORQUE TUBE
BEARING HOUSING
FLUSH
MIL-G-23827
(1 LOCATION)
TORQUE TUBE BEARING HOUSING 1 POINT
3 THERE ARE TWO LATCH ROLLERS
C
ON EACH CARGO DOOR
Cargo Door Lubrication Figure 301 (Sheet 3)
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A
737-300/400/500
MAINTENANCE MANUAL
BALANCE MECHANISM CABLE
OR
MIL-G-25760 (1 LOCATION) 4
BALANCE MECHANISM CABLE
1 POINT
D 1
COUNTER BALANCE
SPRING ATTACH BOLT
BMS 3-23
(1 LOCATION)
BALANCE MECHANISM SPRING 1 POINT
E1 4
AIRPLANES WITH A 7 X 19 CARBON STEEL CABLE
ONLY. LUBRICATION IS NOT REQUIRED ON
AIRPLANES WITH A 7 X 7 CORROSION RESISTANT
STEEL CABLE. REMOVE THE INSULATION PAD TO
GET TO THE CABLE. REFER TO 12-26-0 FOR
CABLE LUBRICATION PROCEDURE.
Cargo Door Lubrication Figure 301 (Sheet 4)
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A 737-300/400/500MAINTENANCE MANUAL
APPLY 5 TO 6 SHOTS OF GREASE AND THEN CYCLE DOOR. APPLY MORE GREASE IF NECESSARY.
Cargo Door Lubrication Figure 301 (Sheet 5)
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