TM 9-243
SAFETY
1.
Keep work, scraper, and hands free from grease
3.
Use the scrapers only for their intended purposes.
and oil when using a scraper.
2.
Keep scrapers sharp at all times, (except the carbon
NOTE
scrapers), since a dull scraper is more apt to slip
Carbon scraper blades are fairly dull to
and cause injury.
prevent scoring of a piston and/or cylinder
wall.
USING A BEARING SCRAPER
1 Place the bearing to be scraped on a bench or other
suitable working surface.
2 Use both hands on the bearing scraper. One hand
should be at the end of the handle while the other
hand steadies the tool.
3 Use the hand at the end of the handle to twist the
tool. Use very light pressure and remove a small
amount of metal with the twisting stroke. If too much
pressure is applied, the scraper will chatter and
leave a rough, uneven surface.
4
Start at one top side of bearing cap. Work down, and
then up to the top of the other side. Do not scrape
lengthwise.
5 Repeat procedure until the required amount of
material has been removed to fit the bearing onto
the shaft.
CARE OF SCRAPERS
1.
Keep scrapers sharp (except carbon scrapers) by
2.
When a scraper is not in use, coat the blade with a
sharpening or grinding.
film of light oil.
NOTE
3.
Hang or store scrapers separately to protect the
Carbon scraper blades are fairly dull to
cutting edge. Do not throw scrapers in with other
tools. This will damage the cutting edges.
prevent scoring of a piston and/or cylinder
wall.
4.
For long-term storage, coat all metal parts with
rust-preventive compound and store in a dry place.
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