IO-720-A1A, A1B, C1B, D1B (W/D)
Description
Lycoming At Overhaul 100% Parts & Replacement List *
Engine Model: IO-720-A1A, A1B, C1B, D1B (W/D)
*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 |
SL715423 |
1 |
|
Piston Rings |
8 |
|
|
Piston Pins |
8 |
|
|
Piston Pin Plugs |
INC W/PIN |
|
|
Exhaust Valves |
8 |
|
|
Intake Guides |
8 |
|
|
Exhaust Guides |
8 |
|
|
Exhaust Valve Retaining Rings |
16 |
|
|
Rocker Assemblies ( '76 Series ) |
N/A |
|
|
Aluminum Push Rods Assemblies ( 235 & 290's ) |
N/A |
|
|
Hydraulic Plunger Assemblies: |
||
|
Bearing Inserts ( Main ) |
2 |
|
|
Bearing Inserts ( Main ) |
8 |
|
|
Bearing Inserts ( Connecting Rods) |
16 |
|
|
Stressed Bolts & Fasteners: |
||
|
Stationary Drive Gear Bolts |
||
|
Camshaft Gear Attaching Bolts |
4 |
|
|
Connecting Rod Bolts |
16 |
|
|
Connecting Rod Nuts |
16 |
|
|
Crankshaft Flange Bolts |
N/A |
|
|
Crankshaft Gear Bolt |
1 |
|
|
Counterweight Bushings |
32 |
|
|
Oil Pump Bodies |
1 |
|
|
Oil Pump Gears |
1 |
|
|
Oil Pump Gears |
1 |
|
|
Washers |
A/R |
|
|
Washers |
A/R |
|
|
Washers |
A/R |
|
|
Washers |
A/R |
|
|
Washers |
A/R |
|
|
Washers |
A/R |
|
|
Lock Nuts |
||
|
Oil Seals Crankshaft |
1 |
|
|
Oil Seals Tach Drive |
1 |
|
|
Oil Seals Vacuum Pump |
1 |
|
|
Oil Seals Fuel Pump |
1 |
|
|
Oil Seals |
||
|
Propeller Governor Oil Line Elbows |
N/A |
|
|
Propeller Shaft Sleeve Rings |
N/A |
|
|
Magneto Gasket |
2 |
|
|
Thermostatic Bypass Valves |
1 |
|
|
Crankshaft Sludge Tubes |
N/A |
|
|
All Circlips |
A/R |
|
|
Lock Plates Crankshaft Gear |
1 |
|
|
Lock Plates Cam Gear |
4 |
|
|
Lock Plates Fuel Pump Idler |
1 |
|
|
Lock Plates Alt Bracket |
1 |
|
|
Lock Plates Mag Drive Shaft |
2 |
|
|
Lock Plates |
A/R |
|
|
Retaining Ring Crankshaft C/W |
32 |
|
|
Retaining Ring Cam To Prop Gov |
2 |
|
|
Retaining Ring Fuel Pump Idler |
1 |
|
|
Retaining Ring |
N/A |
|
|
Pinion Shaft Rollers |
N/A |
|
|
Propeller Shaft Thrust Bearings |
N/A |
|
|
Supercharger Bearing Oil Seals |
N/A |
|
|
Cylinder Fin Stabilizers |
8 |
|
|
Cylinder Fin Stabilizers |
8 |
|
|
Damaged Ignition Cables |
||
|
Accessory Drive Coupling Springs |
N/A |
|
|
AC Diaphragm Fuel Pumps |
||
|
All V-Brand Couplings |
N/A |
|
|
All V-Brand Gaskets |
N/A |
|
|
Engine Hoses oil Drainback Cylinder |
8 |
|
|
All Engine Hose Assemblies |
||
* In Accordance with Textron-Lycoming Mandatory Service Bulletin 240R
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