TM 5-3805-258-24-2ENGINEDISASSEMBLY AND ASSEMBLYFUEL RATIO CONTROL6. Use tooling (A) to remove snap ring (19).7. For models 950BNSCE and 950BSCE only,remove two washers (22) behind snap ring.8. Remove piston (20) from valve (18).9. Remove seal (21) from piston (20).10. Inspect all parts and make replacements ifnecessarv.ASSEMBLE THE FUEL1278-16RATIO CONTROLTools NeededA1P1859Snap Ring Pliers11.2.3.4.5.Put seal (1) on piston (2). Install the seal so thelip is toward the direction of the center of piston(2).Put piston (2) on valve assembly (3). Formodels 950BNSCE and 950BSCE only, puttwo washers (22) on valve assembly.Use tooling (A) to put the snap ring (4) inposition.Put O-ring seal (5) in position on valve exten-sion (6).Put diaphragm (10) on retainer (13). The outerlip of the diaphragm must be toward the holewith thread.NOTE: Spacer (12) is not used on models950BNSCE and 950BSCE.6. Put engine oil on the seal (5) on valve extension(6) and put valve extension (6) into retainer(13). Install spacer (12) and nut (11).7. Put spring (7) into valve extension (6) andengage internal valve (8) with hook on the valveextension (6).8. Put washer (9) on diaphragm (10). The flatside of washer (9) must be in contact withdiaphragm (10). For models 950BNSCE and950BSCE, put larger diameter of washer incontact with diaphragm.5-82
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