TM-9-2815-205-34
ENGINE WITH CONTAINER; MODELS 5063-5299, 5063-5392, 5063-5393, 5063-5395, 5063-5398, 5063-539F, 5063-539L
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
AUGUST 1992
TM-9-2815-205-34 - Page 347 of 596
TM 9-2815-205-34
e. Honing
CAUTION
Do not modify inside surface finish of new liner. Liner is properly finished at factory so
changes will adversely affect piston ring seating.
NOTE
Hone used cylinder liners to break glaze resulting from extended operation and
remove ridge formed at top of piston ring travel. If glaze is not removed, time required to
seat new piston rings will be lengthened.
A scrap cylinder block makes an excellent honing fixture.
(1)
(2)
Place liner (1) in honing fixture (5).
CAUTION
If liner is honed in block,
completely dismantle engine to
ensure all abrasive material is
cleaned out (Paragraphs 3-50
thru 3-55).
Work cylinder hone (6), equipped with
120 grit stones,
U
p and down full Iength of
liner few times between 300 to 400
RPM to produce a crisscross pattern of
hone marks on 45 degree axis.
Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles
and gloves and use in a well-ventilated area. Avoid contact with skin, eyes and
clothes. Do not breathe vapors. Do not use near open flame or excessive heat.
The flash point Is 100-138°F (38-50°C). If you become dizzy while using cleaning
solvent, get fresh air immediately and seek medical aid. If contact with eyes Is
made, wash with water and get medical aid immediately.
Compressed air used for cleaning purposes will not exceed 30 PSI. Use only
with effective chip guarding and personal protective equipment (goggles/shield,
gloves, etc.)
NOT E
After honing, liner must conform to same limits on taper and out-of-round as a new liner
and piston to liner clearance must be within specified limits.
(3) Remove liner from fixture and clean with cleaning solvent. Dry with compressed air and check
surface for burrs and finish. Surface finish must be maintained between 32-55 RMS.
3-217
Back to Top
