PISTON ASSEMBLY (CONT) - TM-5-4320-302-14

PISTON ASSEMBLY (CONT) - TM-5-4320-302-14_509

PISTON ASSEMBLY (CONT) - TM-5-4320-302-14_511

TM-5-4320-302-14 Forward Area Water Point Supply System (FAWPSS) Model WP55100 NSN 4320-01-168-1629 and Model 9095-91 NSN 4320-01-338-3305 Manual
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TM 5-4320-302-14 6-16. PISTON ASSEMBLY (CONT) Location/Item Action Remarks 16. Piston ring a. Use piston to push rings, one at a time, Push ring in far gap down into the cylinder. With a feeler gage, enough to be in the measure ring gap according to the following normal area of ring chart. travel, about 1.18 to 1.57 inches (30 to 40 mm). NORMAL RING RING GAP GAP WEAR LIMIT inches inches PISTON RING (millimeters) (millimeters) Compression 0.0138 to 0.0217 0.0787 rings (0.35 to 0.55) (2.00) Oil control 0.0098 to 0.0157 0.0787 ring (0.25 to 0.40) (2.00) b. If the compression ring gap measurements are less than 0.0138 inch (0.35 mm), the gap may be widened by very carefully filing or stoning. See step 25 for details. If the oil control ring gap measurement is less than 0.0098 inch (0.25 mm), replace the oil control ring. If any ring gap measurement is greater than 0.0787 inch (2.0 mm), replace the piston ring set. 6-116

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