TM 1-1520-238-23
4-680
4.186.
NO. 1 ENGINE POWER AVAILABLE SPINDLE SYSTEM RIGGING CHECK
4.186.1. Description
This task covers:
Rigging Check.
4.186.2. Initial setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Aircraft power unit (item 232, App H)
#51 twist drill (item 119, App H)
Materials/Parts:
Wire (item 226, App F)
Personnel Required:
67R
Attack Helicopter Repairer
One person to assist
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
1.70
External power application – electrical
1.71
External power application – air
1.72
External power application – hydraulic (util-
ity)
2.2
Access door LN1 opened
4.103
No. 1 engine shroud assembly removed
NOTE
This task is typical for both Hamilton
Standard and Woodward hydrome-
chanical units (HMUs).
Hamilton Standard HMUs require a
hardened steel pin 0.065 – 0.069
INCH diameter. Use twist drill as a
power available spindle (PAS) gear-
box rig pin. Woodward HMUs use the
standard rig pin supplied with the load
demand spindle (LDS) gearbox.
4.186.3. Rigging Check
a. Enter pilot station (para 1.56). Observe all
safety precautions.
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PILOT STATION
M04-1211-1
