INSTALLATION - TM-9-2835-255-340587

TM 9-2835-255-34

GAS TURBINE POWER UNIT REPLACEMENT (Sheet 13 of 30)

INSTALLATION:

NOTE

Go to installation step No. 2 if gas turbine

power unit is unserviceable and not being

salvaged or control exchanged.

1. CHECK REPLACEMENT GAS TURBINE POWER

UNIT (1) FOR PROPERLY INSTALLED RIGGING PIN

(2) IN SPUR GEAR (3) AND SHROUD (4).

CAUTION

Excessive rotation of spur gear (3) with

turnbuckle rod bearing (5) disconnected

may cause vanes (6) to become unhinged

from spur gear (3).

If vanes (6) become unhinged, reas-

semble gas turbine power unit (1) with

original parts and replace with a service-

able unit.

If rigging pin (2) is not installed, rotate spur

gear (3) in either direction until rigging pin (2)

can be inserted through hole in spur gear (3)

and into alignment hole in shroud (4). Avoid

rotating spur gear excessively which could

cause vanes (6) to unhinge. Insert rigging pin

(2).

Check vanes (6) around circumference of gas

turbine power unit (1) to ensure no vanes (6)

are dislodged or unhinged from spur gear (3).

If one or more vanes (6) become unhinged,

reassemble gas turbine power unit (1) and

replace with a serviceable unit.

Go on to Sheet 14

6-74

Change 6