3-2 INNER (SMALL) EXIT DUCT, SHROUD AND VANE ASSEMBLY (AVIM) (Continued)
3-2-4 REPAIR (Cont)
1. Grinding of shroud segments: (cont)
c. Start air grinder and adjust side vernier (22) until
abrasive wheel contacts shroud segment (21). Adjust
vertical vernier (19) one turn inwards at completion of
each grinder revolution. Repeat operation until wheel
contacts inner edge of shroud segments.
d. Adjust side vernier (22) until abrasive wheel (20)
contacts shroud segments (21). Adjust vertical vernier (19)
one turn outwards at completion of each grinder revolution.
Repeat until abrasive wheel contacts outer edge of shroud
e. Repeat steps c. and d. until required clearance is
obtained. (Refer to Task 2-3-3.) f. Remove shroud grinder
(16), associated adapter (17) and cover (18) from gas
g. Using suitable vacuum cleaner, remove all dust
particles from casing.
h. Remove airflow opening blanking-off material and
clean off any material adhesive using Petroleum Solvent
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