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 TM 55-1905-219-14-8
4-7.10A. ENGINE - MAINTENANCE INSTRUCTIONS (Continued).
ENGINE RECONDITIONING (Cont)
(4)
Ring side clearance must also be checked before installation. To do this, place in its proper
groove and check side clearance with feeler gage as shown in the accompanying illustration. Side clearance
must not be more than that specified below. If more than this, groove is worn beyond limits and piston must be
replaced.
PISTON RING SIDE GAP
TOP RING
STANDARD
SERVICE LIMIT
(NEW)
(USED)
0.0020 to 0.0047 INCH
0.009 INCH
(0.0051 to 0.0119 CM)
(0.023 CM)
BOTTOM RING
STANDARD
SERVICE LIMIT
(NEW)
(USED)
0.0020 to 0.0035 INCH
0.008 INCH
(0.0051 to 0.0089 CM)
(0.020 CM)
(5)
The Axial Flow engines use "L" shaped ring in the top groove. Use ring expander to install ring.
On all models, turn rings so that the ring gap is over the small locating pins in the piston grooves.
4-396
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