TORQUE TUBE ATTACH FITTING INBD
LOWER HINGE HINGE SUPPORT E
Galley Service Door Mechanism Figure 1 (Sheet 3)
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A 737-300/400/500MAINTENANCE MANUAL
DOOR STOP
FITTING
LOCK SPRING
ADJUSTABLE DOOR STOP PIN
STOP ASSEMBLY
FITTING DOOR STOP
DOOR STOP PIN ADJUSTABLE
DOOR FRAME
LATCH ROLLER FITTING ROLLER CAM PLATES SERRATED LATCH ROD FITTING SUPPORT
CAM CRANK DOOR ROLLER
____ IN CLOSED AND LATCHED POSITION NOTE: LATCH AND STOP ASSEMBLY SHOWN DOOR FWD
F LATCH AND STOP ASSEMBLY
Figure 1 (Sheet 4) Galley Service Door Mechanism
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A 737-300/400/500MAINTENANCE MANUAL
STEP 1 STEP 2 STEP 3 _____DOOR GATE LINING REMOVEDNOTE:
TYPICAL ON GALLEY DOORS
STEP 4 STEP 5 STEP 6
Galley Service Door Operation from Inside Airplane
Figure 2
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A 737-300/400/500MAINTENANCE MANUAL
STEP 1 PULL HANDLE STEP 2 ROTATE HANDLE COUNTERCLOCKWISE
OPEN
STEP 3 STEP 4
Galley Service Door Operation from Outside Airplane
Figure 3
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2.
3.
4.
5.
A
737-300/400/500MAINTENANCE MANUAL
D. A removable body skin panel is located between the upper and lower hinge attach points which provides access to the hinge torque tube for overhaul purposes.
Handle Mechanism
________________
A. The inside handle (Fig. 1) is bolted to a cam plate splined to receive the outside handle shaft. The outside handle in a recess panel flush with the door exterior skin is attached to a handle sleeve splined to receive the outer end of the handle shaft. A seal to prevent pressurization losses is located inside the handle sleeve housing. Another seal is positioned between the sleeve housing and the seal plate. An outside handle seating spring is retained within the handle shaft by a nut and spring retainer. A pin located inside the spring is attached to a pin retaining washer located between the outside handle and the handle sleeve. A centering cam on the handle sleeve engages on a cam on the sleeve housing attached to the handle mechanism housing.
Latching Crank and Door Locking Crank
_____________________________________
A. Two cam rollers attached to two roller cranks (Fig. 1) bear against a cam plate. Viewing the door from inside the airplane, the left cam roller crank is splined to a latching crank. The complete crank assembly rotates in ball berings secured in the handle mechanism housing by bearing retainers. Two separate control rods connected to each end of the latching crank connect with latch rods at the top and bottom of the door. The right cam roller crank is splined to the door cocking crank connected to the torque tube. The torque tube is supported on two ball bearings mounted in the handle mechanism housing. Two nuts allow vertical adjustment of the door in the door opening. Twelve bolts secure the handle mechanism housing to the door structure.
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