Vigv Bushing Wear Inspection Procedure - GE MS-6001B Maintenance Instructions Manual

Gas turbines with dln-1 combustion systems gas only

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Table of Contents

Introduction

VIGV in Fully

Open Position

Figure 1-6. VIGV Bushing Wear Inspection Procedure

Inspection and Maintenance — GEK 107048

1. Set vanes to the full open position

2. Set up dial indicator to measure

motion normal to the vane cord.

Position the indicator to read as

close to the vane inner button as

3. Deflect vane in a tangential direc-

tion (perpendicular to the air flow

direction) to both sides of the

bushing clearance and record full

dial indicator reading.

Dial Indicator