TM 1-1520-238-23
4-428
Change 4
4.136.
ENGINE TURBINE SPEED CONTROL UNIT ADJUSTMENT (T700-GE-701 ENGINE)
4.136.1. Description
This task covers:
Adjustment.
4.136.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 371, App H)
Materials/Parts:
Wire (item 222, App F)
Personnel Required:
68B
Aircraft Powerplant Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
152FG
Maintenance Test Pilot
References:
TM 1-1520-238-CL
TM 1-1520-238-MTF
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access door R295 opened
1.134
Maintenance headset con-
nected
TM 1-1520-238-CL
Engines No. 1 and No. 2
running
4.136.3. Adjustment
a. On pilot aft circuit breaker panel, open ECS
AFT FAN circuit breaker.
b. On pilot ENGINE INST DIM/TEST panel, rotate
DIM control to full BRT.
c. Remove lockwire from nut (1).
d. Hold Np adjustment screw (2). Loosen nut (2)
on turbine speed control unit (3).
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M04-3255-1
M04-3255-2
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2
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