S 434-013-C00
(7)
Install the elbow on the bleed valve as follows:
(a)
Install the jamnut on the elbow fitting.
1) Turn the jamnut until it is farther than the O-ring groove and on the second section of the threads.
(b)
Lubricate the first section of threads and the O-ring groove
with petrolatum.
(c)
Install a new O-ring in the groove even with the second section of threads.
(d)
Turn the jamnut until it lightly touches the O-ring.
(e)
Turn the elbow into the air signal port until the O-ring
immediately touches the countersunk surface of the valve.
(f)
Adjust the elbow fitting to point to the air signal tube.
S 434-014-C00
(8)
Loosely connect the air signal tube to the fitting on the elbow.
S 434-015-C00
(9)
Turn the air signal port 25-30 degrees from the valve center line in the clockwise direction.
NOTE: The 5th stage start bleed valve must be turned 25-30 degrees
____
clockwise from the center line for sufficient clearance
between the valve elbow fitting and the thrust link.
S 434-022-C00
(10) ENGINES WITHOUT CFMI SB 72-426; Tighten the V-band clamps to 55-70 pound-inches (6.3-8.0 Newton meters) (AMM 70-20-02/201).
(a) Safety the clamp nuts together with a lockwire.
S 434-023-C00
(11)
ENGINES WITH CFMI SB 72-426; Tighten the V-band clamps to 55-70 pound-inches (6.3-8.0 Newton meters).
S 434-016-C00
(12)
Make sure the torque on the bolts that attach the strap across the air diffuser tube is 55-70 pound-inches (6.3-8.0 Newton meters).
S 434-017-C00
(13)
Tighten the jamnut that attaches the elbow to the bleed valve to 180-200 pound-inches (20.5-22.7 Newton meters).
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75-34-01
ALL ú ú C01 Page 405 ú Jul 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 434-018-C00
(14)
Tighten the tube nut that attaches the air signal tube to the elbow to 270-300 pound-inches (30.7-34.1 Newton meters).
S 414-019-C00
(15)
Close the left thrust reverser half (AMM 78-31-00/201).
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75-34-01
ALL ú ú C01 Page 406 ú Jul 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
