600 510 ALL  Connecting Rod and Connecting BushingTo Be Rod Bushing Burnished in Place
510 ALL  Finished I.D. of Connecting 1.1254
Rod Bushing  1.1262
601 510 A-B-D-G-J-BD Length Between Connecting 6.4985 A-B-D-G-J-BD Bearing Centers 6.5015
S-T-Y-AF-BE Length Between Connecting  6.7485
RodBearing Centers 6.7515
602 511 ALL  Connecting Rod Bushing and .0008L
Piston Pin  .0025L
603 512 ALL Piston Pin and Piston  .0003L .0014L .0018L
ALL Diameter of Piston Pin Hole  1.1249
in Piston  1.1254
ALL Diameter of Piston Pin  1.1241
1.1246

604 513 A-G-J-S-T-AF-BD- Piston and Piston Pin Plug
513 BE
.002L A-G-J-S-T-AF-BD-*Diameter of Piston Pin Plug 1.1242
BE  1.1247
605 513 B-D-G-J-S-T-Y-AF Piston Pin and Piston Pin 513 Plug (Optional)
.00025L .005L G-J-S-T-Y-AF *Diameter of Piston Pin Plug
B-D Diameter of Piston Pin Plug  .8405
(Thin Wall Pin)  .8415
*See latest edition of ServiceInstruction No. 1267.

606 514 A-B  Piston Ring and Piston -Side Clearance (Top Ring Comp.) .000 (Plain) Full Wedge .004L .006L(B)
B-D  Piston Ring and Piston -Side Clearance (Top Ring Comp.) .0025L (Chrome) Full Wedge .0065L .008L(B)
G-J-S-T-Y-AF-BD-Piston Ring and Piston -Side BE Clearance(Top Ring Comp.) .0025L
Half Wedge  .008L(B)
606 515 B  Piston Ring and Piston -Side Clearance (2nd Ring Comp.) .0025L (Chrome) Full Wedge .0065L .008L(B)
A-B-D-G-J-S-T-Y-AF-Piston Ring and Piston -Side BD-BE Clearance (2nd Ring Comp.).000 Full or Half Wedge .004L .006L(B)
J Piston Ring and Piston -Side j Clearance (3rd Ring Comp.) .000 J Half Wedge .004L .006L(B)
606 516 ALL  Piston Ring and Piston -Side 002L
ALL Clearance(Oil Regulating)  .006L(B)
SSP1776  1-6

PART 1 DIRECT DRIVE ENGINES
SECTIONII CYLINDERS
Ref. Ref. Chart Nomenclature Dimensio ns Clearances Mfr. Mfr. New Old Min. Serv. Min. SServ. & Max. & Max.
Max. Max.
606 517 A Piston Ring and Piston -Side .003L 517 A Clearance (Bottom) .0055L .007L(B)
607 615 ALL Piston Ring Gap (Compression) 615 ALL Plain and Chrome Cylinders .020 615 (Straight Barrels) .030 .047
ALL  Piston Ring Gap (Compression) Nitrided and Chrome Cylinders .045
.055 .067

(Choke Barrels) ALL Piston Ring Gap (OilRegulating) .015 (All Barrels) .030 .047 A-T2 Piston Ring Gap (Oil Scraper) .015 (AllBarrels) . 030 .047 For Choke Barrels-Ring gap is measured within 4 inches from bottom. Ring gap at top of travel must not be
less than .0075.

For all Other Barrels -Ringgap is measured at top limit of ring travel. EngineandPistonApplication Min.PistonDiameter CylinderBarrel Max. Clearance EngineChart Typeof MaximumPistonSkirt CodeLetter PistonNumber Top Bottom on Diameter & Cyl.
Typeof Piston Surface 608 519A 61147,73851 4.3470 4.3555 Cast-Round P 4.3795 .021L 608 522 61333 4.3555 nd 4.3795
　
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