S 024-006

 (5)
Remove the transfer cylinder from the airplane.

 S 034-007

 (6)
Remove the hydraulic unions and discard the O-ring packings.

 (a)
Put a cap on the ports.

 TASK 32-32-71-404-008
 3. Main Landing Gear Transfer Cylinder Installation (Fig. 401)
________________________________________________
 A. Consumable Materials
 (1) Hydraulic Fluid - BMS 3-11 (Ref 20-30-21)
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A

737-300/400/500
MAINTENANCE MANUAL

SEE  A 
INBOARD CLAMP 
TRANSFER CYLINDER BRACKET HYDRAULIC LINE TEE BOLT  HYDRAULIC LINE 

INBD
FWD MODULAR PACKAGE MAIN GEAR
A
Main Gear Transfer Cylinder Installation Figure 401
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A
737-300/400/500MAINTENANCE MANUAL
 B. References
 (1)  
07-11-11/201, Jack Airplane

 (2)  
29-15-00/201, Hydraulic System A and B

 (3)  
32-00-01/201, Ground Lock Assemblies

 C.
Procedure to Install the Transfer Cylinder on the Main Landing Gear

 S 434-009
 (1)  
Remove the plugs.

 S 434-010

 (2)  
Install the hydraulic unions in the transfer cylinder with the new O-ring packings.

 S 614-011

 (3)  
Fill the transfer cylinder from the two ends with hydraulic fluid.

 (a)  
Seal the unions with a cap.

 S 824-013
 (4)  
Set the transfer cylinder in the clamps.

 S 824-014

 (5)  
Adjust the position of the cylinder until the hydraulic lines are aligned.

 NOTE: If you remove the clamp tee bolts, you must install the
____
 inboard tee bolt with the nut up.

 S 434-016
 (6)  
Remove the caps and the plugs.

 S 434-015

 (7)  
Connect the hydraulic lines with your hand.

 (8)  
Tighten the clamp bolts and the hydraulic connections.

 S 584-018

 (9)  
Lift the airplane with the jacks for landing gear retraction (Ref 07-11-11/201).

 (a)  
Pressurize the hydraulic system A (Ref 29-15-00/201).

 (b)  
Remove the ground locks in the main landing gear (Ref 32-00-01/201).

 S 434-017
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A 737-300/400/500MAINTENANCE MANUAL
 WARNING:_______ MAKE SURE YOU CLEAR ALL THE WHEEL WELL AREAS OF EQUIPMENT
 OR PERSONS BEFORE YOU OPERATE THE GEAR.  FAILURE TO CLEAR
 THE AREA CAN CAUSE INJURY TO PERSONS OR DAMAGE TO

 EQUIPMENT.
 (c)  
Operate the gear several times to bleed the air from the cylinder and the lines.

 (d)  
Extend the gear.

 (e)  
Remove the pressure from the hydraulic system A (Ref 29-15-00/201).

 (f)  
Make sure there is no leaks in the hydraulic connections.

 (g)  
Lower the airplane and remove the jacks.

 S 844-019
 (10)
 If airplane jacks are not available or to lift the airplane on jacks is not possible, make the retraction of the main landing gear as follows:

 (a)  
Make sure that you install the transfer cylinder correctly.

 (b)  
　
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