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A-B  I.D. Tappet Bore in Crankcase  .6250 .6263  .6266 
B1-D-G-J-S-T-Y-AF  I.D. Tappet Bore inCrankcase  .7187 .7200  .7203 
BD-BE  I.D. Tappet Bore in Crankcase  .8755 .8773  .8776 
512  559  B1-D-G-J-S-T-Y  Tappet Plunger Assembly and Body -Chilled  .0010L .0047L  .0067L 
S7-S1-AF  Tappet Plunger Assemblyand Body -Hyperbolic  .0010L.OO10L .0067L  .0087L 
513 560  B1-D-G-J-S-T-Y  Tappet Socket and Body  .002L .005L  .007L 
S7-S1-AF  Tappet Socket and Body(Hyperbolic)  .002L .007L  .009L 
514  537  ALL  Camshaft and Crankcase  .002L .004L  .006L 
515 538  ALL  Camshaft -End Clearance  .002L .009L  .015L 
516  539  ALL  Camshaft Run-Out at Center BearingJournal  .000 .001  .006 
517  578  All Models Using Counterweights  Counterweight Bushing andCrankshaft  .0013T .0026T  (A) 
518  All Models UsingCounterweights  Counterweight Roller -End Clearance  .007L .025L  .038L 
519 580  All ModelsUsingCounterweights  Counterweight and Crankshaft -Side Clearance*  .003L  .017L 
520 521  696 All Models UsingCounterweights 775 All Models Using 775 Counterweights Counterweight Bore and WasherO.D. I.D. of CounterweightBushing *Measure below roll er next to flat.  .7485 .7505  .7512  .0002L .0030L  (A) 
SSP1776  1-3 

SERVICE TABLE OF LIMITS

PART 1 DIRECT DRIVE ENGINES
SECTIONI CRANKCASE, CRANKSHAFT,CAMSHAFT
Ref. Ref.
Chart Nomenclature Dimensions Clearances Mfr. Mfr.

New Old
Min. Serv. Min. Serv. & Max. & Max.
Max. Max.

522 774 ALL O.D. of Counterweight Roller 774(AS APPLICABLE) (See latest edition of Service Instruction No. 1012)
523 503 D  Thrust Bearing and Propeller .0000 Shaft .0012L .002L
524 509 D  Thrust Bearingand Thrust Bearing .003T Cap Clamp Fit (Shim to this Fit) .005T (A)
525 555 D
Thrust BearingTilt  .027 Tilt
526 505 D  Crankshaft Run-Out -Rear Cone Location .003
527 506 D CrankshaftRun-Out -Front Cone Location .007 527 506
528 508 D Thrust Bearing and Thrust Bearing .0016L 508 Cage .0034L .0045L
(CRANKSHAFT
AGAINST THRUSTFACE)
Longitudinal Section Thru Engine
SSP1776
1-4

PART 1 DIRECT DRIVE ENGINES
SECTIONI CRANKCASE, CRANKSHAFT,CAMSHAFT
Crankcase,Crankshaft,Camshaftand RelatedParts
SSP1776 1-5

SERVICE TABLE OF LIMITS
PART 1 DIRECT DRIVE ENGINES
SECTIONII CYLINDERS
Ref. Ref. Chart  Nomenclature nsions
Dimensions Clearances
Mfr. Mfr.
New Old

Min. Serv. Min. Serv. & Max. & Max. Max. Max.
　
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