TM
55-1730-229-34
AG
320A0-MME-000
TO
35 C2-3-473-2
TM
1730-34/1
(2) Check for distortion of body
surfaces (2). Replace scroll if distor-
tion of surfaces exceeds 0.125 inch.
(3) Check for cracks in flange and
Repair if cracks are indi-
body (3).
cated.
(4) Check flange for damage to
threads (4). No damage to threads per-
Replace turbine housing scroll
mitted.
if damage is indicated.
(5) Dimensionally check Diameter
A.
Diameter A shall be 9.430 to 9.440
inches.
(6) Dimensionally check Diameter
B.
Diameter B shall be 6.19 to 6.22
inches.
(7) Perform fluorescent penetrant
inspection in accordance with MIL-I-
6866.
Refer to Repair if cracks are
Indicated.
(8) Replace/repair turbine housing
scroll if inspection requirements are
not met.
f. Turbine Nozzle Inspection. (See
(1) Check for axial cracks (1) in
No cracks al-
shroud below vane ID.
lowed.
1.
PLENUM ASSEMBLY NUT
PLENUM
2.
(2) Check for cracks (2) in
Cracks in shroud OD over to
shroud.
Figure 9-13. Inspection of Turbine
Cracks extending
vane OD acceptable.
Plenum Assembly
inward from vane OD, replace nozzle.
(3) Check for scoring (3) on
e. Turbine Housing Scroll Inspec-
Scoring up to 0.030
shroud contour.
inch deep acceptable. Scoring in excess
of 0.030 inch deep, replace nozzle.
(1) Check scroll for erosion with
subsequent thinning (1). Replace scroll
(4) Check leading edge of vane for
if erosion with subsequent metal thin-
erosion (4).
Damage up to 0.125 inch
ning below twenty-five percent of stock
deep, refer to Repair. Damage in excess
thickness.
of 0.125 inch deep, replace nozzle.
9-28