Lycoming SERVICE TABLE OF LIMITS AND TORQUE VALUE RECOMMENDATIONS(11)

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Valve Rocker Shaft BushingHole in Cylinder Head  .7380 .7388 
Valve Rocker and CylinderHead -Side Clearance  .005L 
(Parallel Valve Heads)  .013L  .016L 
Valve Rocker and CylinderHead -Side Clearance  .002L 
(Angle ValveHeads)  .020L  .024L 
Push Rod and Ball End  .0005T 
.0025T  (A) 
Intake and Exhaust Valve  .705 
Guide Height  .725 
Intake Valve Guide Height (Parallel Valve Heads)  .705 .725 
Exhaust Valve Guide Height(ParallelValve Heads)  .765 .785 
Intake and Exhaust Valve 
Guide Height (Angle Valve Heads)  .914 .954 

MEASUREVALVEGUIDE HEIGHT FROM THE VALVE SPRING SEAT COUNTERBOREIN THE CYLINDER HEADTO THE TOP OF VALVE GUIDE.
SSP1776
1-11
SERVICE  TABLE  OF  LIMITS 
PART  1 DIRECT  DRIVE  ENGINES 
SECTIONII CYLINDERS 

Cylinder, Piston and Valve Components 1-12
SSP1776
PART 1 DIRECT DRIVE ENGINES
SECTIONII CYLINDERS
0-235 TYPE
PARALLEL VALVE HEAD
620
619-
ANGLEVALVE HEAD
Cylinder, Piston and Valve Components
SSP1776 1-13

SERVICE TABLE OF LIMITS
PART 1 DIRECT DRIVE ENGINES
SECTIONIII GEAR TRAIN SECTION-OIL PUMP

Ref.  Ref.  Chart  Nomenclature  Dimensions  Clearances 
Mfr.  Mfr. 
New  Old  Min.  Serv.  Min.  Serv. 
&  Max.  &  Max. 
Max.  Max. 
700  A54 ALL  Oil Pump Drive Shaft and Oil Pump Body or Cover  .0010L .0025L  .004L 
701  601  A-B-D-G-J-S-T-AF  Oil Pump Drive Shaft and and Accessory Housing  .0015L .0030L  .006L 
Y  Oil Pump Drive Shaft and Accessory Case  .0015L .0030L  .006L 
BD-BE  Oil Pump Drive Shaft and Crankcase  .0010L .0025L  .004L 
702 980 S-T-AF (DUAL MAGNETO):::::::ED-BEBD-BE  Oil Pump Drive Shaft -End Clearance  .015L .050L  .065L 
Oil Pump Drive Shaft -End Clearance  .017L .037L  .047L 
702  S-T-AF  Oil Pump Impellers -Diameter Clearance  .002L .006L  .008L 
BD-BE  Oil Pump Impellers -Diameter Clearance  .0035L .0075L  .009L 
704  543  ALL (Except BD-BE)AS APPLICABLE  Oil Pump Impeller -Side Clearance  .002L .0045L  .005L 
.APPLICABLEBD-BE::::::A  Oil Pump Impeller -Side Clearance  .003L .005L  .006L 
Width of Oil Pump Impellers  .622 
.624  .621 
Width of Oil Pump Impellers  .747 
.749  .746 
Width of Oil Pump Impellers  .995 
　
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