(y)
Add a note in the airplane log that N1 indication function should be clear for the next flight.
TASK 22-31-00-825-082
4. Power Lever Angle Synchro Adjustment____________________________________
A. General
(1)
Adjust the power lever angle (PLA) synchro when you replace a PLA synchro (or an engine fuel control box unit or an engine).
(2)
The rigging adjustment of the PLA synchro is part of the A/T BITE
B. Equipment and Materials
(1) Rig Pin Kit - F70207 (for airplanes with A/T computer -1 thru -5)
NOTE:____One rig pin required: F70207-23 or MS20392-3C (optional) pin, or equivalent 0.248 +0.000/-0.002 inch diameter, 3 inch long rod or bolt.
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A
737-300/400/500MAINTENANCE MANUAL
C. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 71-11-02/201, Fan Cowl Panels
D. Prepare for PLA synchro adjustment
S 715-020
(1) Make sure you do the A/T operational test (par. 2).
NOTE: Do not put the airplane to normal at the end of the
____
operational test.
S 015-021
(2)
Open the left fan cowl on each engine (AMM 71-11-02/201)
S 865-023
(3)
Make sure that CDU shows A/T BITE TEST page 1/2.
NOTE: If A/T BITE TEST page 1/2 is not shown, push INIT REF key on
____ CDU, push LSK 6L (<INDEX), push LSK 6R (MAINT>), then push LSK 3L (<A/T). Make sure that A/T BITE TEST page 1/2 is shown.
S 865-024
(4)
Push the NEXT PAGE key on the CDU and make sure that CDU shows the A/T BITE TEST page 2/2.
S 865-025
(5)
Make sure that you close the LANDING GEAR AIR/GND RELAY & LTS circuit breaker on the P6 panel.
(6)
Push LSK 1L (<RANGE CHECK).
(7)
Make sure that CDU shows the A/T BITE TEST - RANGE CHECK page.
S 865-026
S 865-027
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A 737-300/400/500MAINTENANCE MANUAL
S 865-030
(8) Adjust the throttle levers from the idle stop to full forward and back to the idle stop.
NOTE: The throttle lever angles values should be around zero at the
____ idle stop, 60 degrees at full forward, and linear in between.
NOTE: AIRPLANES WITH A/T COMPUTER P/N 10-62017-11 AND SUBSEQUENT;
____ The equivalent SYNC (synchro) values shown are from around zero to around 327.5 degrees.
S 865-033
(9)
Make sure that throttle levers are at the idle stop (full aft) and install the DO-NOT-OPERATE identifiers.
S 865-034
(10)
Push LSK 6L (<INDEX) and make sure that CDU goes back to the A/T BITE TEST page 2/2.
E. PLA synchro Adjustment
S 745-024
(1) AIRPLANES WITH A/T COMPUTER P/N 10-62017-1 THRU P/N 10-62017-5; Do the A/T BITE Test Rigging Adjust
WARNING: YOU MUST STAY OUT OF THE CABLE RUNS AND THE MEC BOX AREA
_______ ON THE ENGINES. THE AUTOMATIC MOVEMENT OF THE THROTTLE LEVERS IN THIS TEST CAN CAUSE INJURY TO PERSONNEL AND DAMAGE TO EQUIPMENT.
(a)
Push LSK 2L (<RIGGING ADJUST) and make sure that CDU shows the A/T BITE TEST - RIGGING ADJUST page.
(b)
Engage the A/T.
(c)
Make sure that throttle levers move forward about 20 degrees, then A/T disengages.
NOTE: If the throttle levers do not move forward, open and
____ then close the auto throttle AC and DC circuit breakers and repeat the procedure above.
(d) Put a 3-inch rig pin (1/4 inch diameter) into the part Power Rig hole.
NOTE: The Part Power Rig hole has a mark "R" on the engine
____ control box (Fig. 503). Make sure you move the Power Lever back and forward during the procedure.
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