S 034-007

 (5)  
Disconnect the hydraulic line from the outboard end of the accumulator. Put a cap on the hydraulic line.

 S 034-008

 (6)  
Disconnect the charging line from the inboard end of the accumulator.

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A 737-300/400/500MAINTENANCE MANUAL
 S 034-009
 (7)  
Loosen the clamp nuts for the accumulator clamps (two locations) and open the clamps.

 S 024-010

 (8)  
Remove the accumulator.

 S 034-011

 (9)  
Remove the 1/2 inch hydraulic reducer union and the O-ring from the outboard end of the accumulator. Discard the O-ring.

 S 034-012

 (10)
 Remove the 5/16 inch reducer union and the O-ring from the inboard end of the accumulator. Discard the O-ring.

 TASK 32-41-51-404-013
 3.  Install the Hydraulic Brake Accumulator (Fig. 401)
_______________________________________
 A.  Consumable Materials
 (1)
D00000 Hydraulic Fluid, Fire Resistant - BMS 3-11 (AMM 20-30-21)

 B.  
References

 (1)  
AMM 12-12-00/301, Hydraulic System Reservoirs

 (2)  
AMM 12-15-11/301, Hydraulic Brake Accumulator

 (3)  
AMM 29-15-00/201, Hydraulic Systems A, B, And Standby

 C.  
Access

 (1)  
Location Zones

 101/102  Control Cabin 216 Left Main Wheel Well 217 Right Main Wheel Well
 D.  Procedure
 S 434-014
 (1)  
Install the 5/16 inch hydraulic reducer union with a new O-ring at the inboard end of the accumulator.

 S 434-015

 (2)  
Install the 1/2 inch hydraulic reducer union with a new O-ring at the outboard end of the accumulator.

 S 614-016

 (3)  
Fill the accumulator with hydraulic fluid through the port that has the union fitting for the hydraulic line. Put a cap on the fitting.

 S 424-017

 (4)  
Put the accumulator in the installed position inside the clamps and align the charging line with the union fitting on the accumulator.

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A
737-300/400/500MAINTENANCE MANUAL
 S 424-018
 (5)
Tighten the clamps.

 S 434-019

 (6)
Connect the charging line and the hydraulic line to the accumulator.

 S 614-020

 (7)
Precharge the hydraulic accumulator (AMM 12-15-11/301)

 S 434-021

 (8)
Safety the charging valve with a wire.

 S 864-022

 (9)
Pressurize hydraulic system B (AMM 29-15-00/201).

 S 734-023

 (10)
 Make sure that the gages for hydraulic system B and the brake accumulator indicate approximately 3000 psig.

 S 794-024

 (11)
 Do a check to make sure that there are no leaks at the connections for the hydraulic line and the charging line on the accumulator.

 S 864-025

 (12)
 Fully push down and release the brake a minimum of six times to bleed the air from the accumulator.

 S 614-035

 (13)
 Do the servicing of the hydraulic system reservoirs
 (AMM 12-12-00/301)

 TASK 32-41-51-714-026
 4.  Do a Test of Hydraulic Brake Accumulator Operation__________________________________________________
 A.  References
 (1)
AMM 29-15-00/201, Hydraulic Systems A, B, And Standby

 B.  
Access

 (1)
Location Zones

 101/102  Control Cabin 216 Left Main Wheel Well 217 Right Main Wheel Well
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