Description

Lycoming At Overhaul 100% Parts & Replacement List *
Engine Model: IO-540-C4B5, D4A5

*Note: This list is not all-inclusive and may not be current. Consult the latest manufacturer’s approved data before installing any part.

Description	Part Number	Quantity
Engine Gasket Set	71569-1 SL71569-1	1
Piston Rings	SL3601-SC	6
Piston Pins	SL13444-1	6
Piston Pin Plugs	INCLUDED W/ Pin	6
Exhaust Valves	LW-19001 AEL19001 SL19001A	6
Intake Guides	SL61681A	6
Exhaust Guides	SL74230A	6
Exhaust Valve Keeper Key	MS13997-3	12
Rocker Assemblies ( '76 Series )	N/A
Aluminum Push Rods Assemblies ( 235 & 290's )	N/A
Hydraulic Plunger Assemblies	15B26066 AEL78290 SL78290	12
Bearing Inserts (Front)	AEL13884 SL13884A	2
Bearing Inserts (Rear & Intermediate)	SL11020	6
Bearing Inserts ( Connecting Rods)	AEL13521 SL13521A	12
Stressed Bolts & Fasteners:
Stationary Drive Gear Bolts	N/A
Camshaft Gear Attaching Bolts	N/A
Connecting Rod Bolts	75061 AEL75061 SL75061	12
Connecting Rod Nuts	LW-12186 AEL12186 SL12186	12
Crankshaft Flange Bolts	N/A
Crankshaft Gear Bolt	SL-STD-2209	1
Counterweight Bushings	71903-A AEL71903A SL71903A-A	8
Oil Pump Bodies	78528 AEL78528 SL78528	1
Oil Pump Gears	AEL18109A-S SL18109A-S	1
Washer 1/4" Lock (Old Part # MS35333-40)	AN936-A416	A/R
Washer 5/16" Lock (Old Part # MS35333-41)	AN936-A516	A/R
Washer 3/8" Lock (Old Part # MS35333-42)	AN936-A616	A/R
Washer 1/4" Flat	AN960-416	A/R
Washer 5/16" Flat	AN960-516	A/R
Washer 3/8" Flat	AN960-616	A/R
Lock Nuts	N/A
Oil Seals Crankshaft	LW-13792 AEL13792 SL13792	1
Oil Seals Tach Drive	LW-14260 AEL14260 SL14260	1
Oil Seals Fuel Pump	AELSTD208 SL-STD-208	1
Oil Seals	A/R
Propeller Governor Oil Line Elbows	N/A
Propeller Shaft Sleeve Rings	N/A
Magneto Drive Cushions	LW-12136 SL12136	4
Thermostatic Bypass Valves	SL53E19600	1
Crankshaft Sludge Tubes	N/A
All Circlips	N/A
Lock Plates Crank Gear (Old Part # 67516)	LW-18638	1
Lock Plates Shroud Tube	LW-12272 AEL12272 SL12272	6
Lock Plates Fuel Pump Idler	AEL71667 SL71667	1
Lock Plates Alternator Bracket	73383 AEL73383 SL73383	1
Lock Plates	A/R	1
Retaining Rings Crankshaft Counterweight	LW-14820 SL14820	8
Retaining Rings Camshaft	MS16625-2081	1
All Laminated Shims	N/A
Pinion Shaft Rollers	N/A
Propeller Shaft Thrust Bearings	N/A
Supercharger Bearing Oil Seals	N/A
Cylinder Fin Stabilizers	N/A
Damaged Ignition Cables
Accessory Drive Coupling Springs	N/A
AC Diaphragm Fuel Pumps	LW-15473 (41234)	1
All V-Brand Couplings	N/A
All V-Brand Gaskets	N/A
Engine Hoses Intake	69603 AEL69603 SL69603	6
Engine Hoses Oil Drainback Cylinder	STD-1821 AELSTD1821 SL-STD-1821	6
All Engine Hose Assemblies