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Overhaul Manual

O-360 and IO-360 Series Engines

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Table 72-00-11.1 • Dimensional Limits (continued)

Description of Limit Minimum (in.) Maximum (in.)

Crankshaft Main Bearings

Crankshaft in Front Bearing (End Clear) 0.0090 0.0160

Crankshaft in Front Bearing (Diameter) 0.0015 0.0045

Crankshaft Oil Slinger 0.0020 0.0070

Crankshaft Rod Journal Diameter 2.1240 2.1250

Crankshaft Run-Out (to Center Main) - 0.0050 T.I.R.

Crankshaft Main Bearing Journal Diameter 2.3750 2.3760

Crankshaft Flange O.D. Run-out - 0.0050 T.I.R.

Crankshaft Flange Pilot Diameter (to Front and Rear Mains) - 0.0020 T.I.R.

Camshaft Journal

Camshaft Center Bearing Journal Run-Out - 0.0010 T.I.R.

Journals in Crankcase 0.0020 0.0040

Rear Journal in Crankcase (End Clearance) 0.0020 0.0090

Valve Tappet in Crankcase 0.0010 0.0033

Rocker Shaft

Rocker Shaft in Rocker Bearings 0.0007 0.0017

Rocker Shaft in Cylinder Head 0.0001 0.0013

Valves in Guides

Exhaust Valve in Guide 0.0040 0.0060

Intake Valve in Guide 0.0010 0.0028

Oil Seal in Propeller Governor Adapter 0.0010T 0.0030T

Valve Rocker (Side Clearance) 0.0050 0.0130

Dry Tappet Clearance 0.0280 0.0800

Oil Pump Housing I.D. and Oil Pump Gear O.D. 0.0020 0.0060

Oil Pump Gear Shaft in Accessory Case 0.0015 0.00300

Crankshaft Gear in Crankshaft Pilot 0.0005T 0.0010L

Oil Seal in Accessory Tachometer Housing 0.0010T 0.0030T

Fuel Pump Pushrod in Accessory Case 0.0015 0.0030

Tachometer Drive Shaft in Accessory Case 0.0015 0.0035

72-00-11

Fits and Clearances

Superior IO-360 SERIES Overhaul Manual

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