CLEANING - TM-9-2835-255-340406

TM 9-2835-255-34

LOW PRESSURE ROTOR AND HOUSING ASSEMBLY (COMPRESSOR) AND HIGH PRESSURE

AXIAL COMPRESSOR AND ROTOR CLEANING (Sheet 2 of 21)

CLEANING:

CAUTION

Upper and lower housing and upper and lower

stators are matched sets. Do not break up sets.

NOTE

If damage is found in steps 1 and 2, install upper

case and stator assemblies using old (not new)

supplies.

CHECK ALL LOW PRESSURE STATOR

VANE ASSEMBLIES (1) AND ALL HIGH

PRESSURE STATOR VANE ASSEMBLIES

(2) FOR CRACKS, BENDS, EROSION OR

OTHER MAJOR DAMAGE. IF DAMAGED,

INSTALL INTERMEDIATE (LOW PRES-

SURE) HOUSING (TOP HALF) (PAGE 5-8)

AND TURBINE AXIAL COMPRESSOR

(HIGH PRESSURE) HOUSING (TOP HALF)

(PAGE 5-3), AND REPLACE FORWARD

MODULE (PAGE 5-25). IF OK, GO TO

STEP 2.

CHECK ALL LOW PRESSURE COMPRES-

SOR BLADES (3) AND ALL HIGH COM-

PRESSOR BLADES (4) FOR FOREIGN

OBJECT DAMAGE. IF DAMAGE IS

FOUND, INSTALL INTERMEDIATE (LOW

PRESSURE) HOUSING (TOP HALF) (PAGE

5-8) AND TURBINE AXIAL COMPRESSOR

(HIGH PRESSURE) HOUSING (TOP HALF)

(PAGE 5-3), AND REPLACE FORWARD

MODULE (PAGE 5-25). IF OK, GO TO

STEP 3.

a. Inspect for cracks, bends or distortion.

b. Inspect for sharp nicks and dents that are

longer than 3/32-inch (2.38 mm).

c . Inspect for any nicks and dents that are

within 3/4-inch (19.05 mm) of blade root.

d , If damage is found in steps a. through c.,

install intermediate (low-pressure) housing

(top half) (page 5-8) and turbine axial

compressor (high pressure) housing (top

half) (page 5-3), and replace forward

module (page 5-25). If ok, go to step 3.

Go on to Sheet 3

Change 4 5-35