TM 55-2840-231-23
CHAPTER 2
COMPRESSOR SECTION
This chapter contains procedures for the maintenance and preservation of the Compressor Section.
Paragraphs following outline disassembly, inspection, repair, and additional requirements needed to
maintain the compressor section and related parts. Procedures requiring maintenance on the Aviation
Intermediate Maintenance ( AVIM ) level are specified and must be performed as such. Paragraphs in which
the maintenance level is not specified shall be considered Aviation Unit Maintenance (AVUM) and may be
performed at this level or a higher level of maintenance.
Compressor Maintenance Procedures
Compressor - Removal
Compressor Cleaning to Restore Lost Performance
Bleed Valve Cleaning to Restore Lost Compressor Performance
Compressor Cleaning to Remove Salt Walter Contamination
Compressor - Installation
Compressor - Preparation for Storage and Shipment
Compressor Front Support - Inspection
Compressor Case Half - Removal
Compressor Case Half - Cleaning
Compressor Plastic Coating - Inspection
Compressor Stator Vane - Inspection
Compressor Case - Repair
Compressor Rotor Blades - Cleaning
Compressor Rotor and Blades - Inspection
Compressor Rotor and Blades - Repair
Compressor Case Half - Installation
Diffuser Scroll - Inspection
Diffuser Scroll - Repair
Diffuser Vent Orifice Selection
Compressor - Removing From Shipping Container
Adapter Spur Gearshaft - Inspection
2-1. COMPRESSOR MAINTENANCE PROCEDURES.
Page
2-1
2-2
2-8
2-14.1
2-15
2-17
2-26
2-33
2-34
2-36
2-36.1
2-36.3
2-37
2-48
2-48
2-56
2-64
2-65
2-66.1
2-68
2-74
2-76
Visually inspect all subassemblies and accessories removed from the engine compressor section. Check
for loose or missing parts. Note any damage or excessive wear. Repair damaged parts when possible. Replace
damaged parts that cannot be repaired. Disassembly procedures provided enable required cleaning, inspec-
tion, repair or replacement of compressor subassemblies and accessories.
During reassembly of the engine subassemblies and accessories discard all of the following parts and
replace with new parts:
Seals
Lockpins
Gaskets
Lockwashers
Cotter Pins
Lockwire
Tabwashers
Preformed Packing
Change 11
2-1
