Intake ValveStem and Valve Guide
O.D. Intake ValveStem
Finished I.D. Intake Valve Guide
Intake and Exhaust Valve and Valve Cap Clearance (RotatorType Small Dia. Head)
Solid Tappet Clearance(After Engine in Run)
Dry Tappet Clearance
Valve Rocker Shaft and Cylinder Head (No Bushing)
ValveRocker Shaft and Valve Rocker Bushing (ParallelValve Heads)
ValveRocker Shaft and Valve Rocker Bushing (Angle Valve Heads)
Finished I.D. of Valve Rocker Shaft Bores in Cylinder Head(No Bushings)
Finished I.D. of Valve Rocker
Shaft (Bushing)in Cylinder
Head (ParallelValve Heads)
.0010L
.0028L .006L
.4022
.4030 .4010
.4040
.4050
.000
.004L .005L
.006
.012
.028
.0001L
.0013L .0025L
.0001L
.0013L .0025L
.0001L
.0013L .0025L
.6246
.6261 .6270
.6270
SERVICE TABLE OF LIMITS
PART 1 DIRECT DRIVE ENGINES
SECTION II CYLINDERS
Ref. Ref. Chart New Old
619 611 S1-S2-S3-S5-S6-S7-S9-S10-T2-T3-AF 620 531 ALL ALL ALL 621 532 ALL 622 612 ALL ALL 623 533 A-B-D-G-J-Y-S-T
S1-S2-S3-S5-S6-S7-S9-S10-T2-T3-AF
624 535 A-B-J
625 971 A
ALL
ALL EXCEPT 0-235 ALL
Nomenclature Dimensions Clearances
Mfr. Mfr.
Min. Serv. Min. Serv.
& Max. & Max.
Max. Max.
Finished I.D. of Valve Rocker
Shaft (Bushing) in CylinderHead (Angle Valve Heads) .6246 .6261 .6270
Valve Rocker Shaft and Valve .0007L
Rocker Bushing .0017L .004L
Finished I.D. of Rocker Arm .6252
Bushing .6263 .6270
O.D. Valve Rocker Shaft .6241
.6245 .6231
Valve Rocker Bushingand Valve Rocker Bushing Must Be Burnished In Place
Valve Rocker Shaft Bushingand Cylinder Head .0022T .0038T (A)
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