Crankshaft Cleaning; Crankshaft Counterbore Cleaning - Lycoming TEO-540-C1A Maintenance Manual

Component or Part
Fuel pump filter
Electrical connectors
Turbocharger
Final spot cleaning/touch-
up cleaning
Hartzell Engine
Technologies (HET)
(formerly Kelly
Aerospace) starter
All other parts
Volcanic ash on engine
Engine exterior and
components not
contaminated with
volcanic ash
*Refer to the manufacturer's instructions for usage, safety data, and disposal of all cleaning agents.

2. Crankshaft Cleaning

CAUTION DO NOT MAKE SCORES, SCRATCHES, OR ETCH MARKINGS OF ANY
KIND ON THE CRANKSHAFT SINCE THEY CAN CAUSE THE PART TO
WEAKEN AND TO FAIL.
DO NOT USE WIRE BRUSHES OR METAL SCRAPERS ON BEARINGS OR
CONTACT SURFACES.
A. Clean the inside of all crank pin journals, main bearing journals, and all oil passages with
bristle (non-wire) brushes.
B. Clean all parts thoroughly with mineral spirits (MIL-PRF-680) or equivalent.
C. Dry the crankshaft with compressed air.
D. Apply preservative oil to the crankshaft to prevent corrosion.

3. Crankshaft Counterbore Cleaning

A. Flush the crankshaft counterbore and alignment dowel pin with mineral spirits (MIL-PRF-
680) or equivalent or Stoddard Solvent or equivalent solvent to remove any debris.
B. Dry the crankshaft counterbore threads with compressed air.
05-30
Page 38
Table 1 (Cont.)
Cleaning Guidelines for Engine Components
Cleaning Agent*
MEK
Acetone
CR4 or equivalent
Parts washer solvent
Naptha spray booth
Parts washer solvent using
Whirlwash-L or equivalent
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Guidelines
(1) Clean in an ultrasonic cleaner.
(2) Blow dry with compressed air.
Refer to contact cleaning solvent
manufacturer's instructions.
Refer to the turbocharger manufacturer's
instructions.
Refer to the starter manufacturer's
cleaning instructions.
Refer to the "Volcanic Ash Removal"
procedure in this chapter.
Use a brush or spray to apply degreaser
(hydrocarbon-based solvent) to parts to
remove grease, oil, and dirt
© 2018 Avco Corporation. All Rights Reserved
November 2018