Lycoming TEO-540-C1A Maintenance Manual page 227

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
I. Make sure the crankshaft trigger gear assembly seats firmly and is perpendicular (not at a
slanted angle) to the crankshaft as shown in Figure 113:
Figure 113
Crankshaft Trigger Gear Assembly Position
(1) Try to insert a pointed 0.001 in. (0.025 mm) feeler gage or shim between the pilot flange
(Figure 114) of the crankshaft trigger gear assembly and crankshaft counterbore at each
of the three scallops on the pilot flange of the crankshaft trigger gear assembly. The feeler
gage must NOT fit between the two surfaces at any location. There must not be any gap
or clearance between the crankshaft counterbored end and the pilot flange of the
crankshaft trigger gear assembly.
(2) If clearance is found, remove the crankshaft gear bolt and crankshaft trigger gear
assembly.
(3) Make sure the mating surfaces of the crankshaft trigger gear assembly and crankshaft
counterbore are clean and dry and that there is no debris.
(4) Reinstall the crankshaft trigger gear assembly and crankshaft gear bolt. Repeat the initial
torque and seating check above.
(5) Try again to put a pointed 0.001 in. feeler gage or shim stock between the crankshaft
trigger gear assembly pilot flange and crankshaft counterbore at each of the three scallops
on the crankshaft trigger gear assembly pilot flange.
J. If there is no gap, the crankshaft trigger gear assembly is seated correctly. Complete the final
torque of the crankshaft gear bolt to 204 in.-lb. (23.05 Nm).
K. Install the fuel pump drive shaft (Figure 115) with three screws and three washers. Torque
the screws to 100 in.-lb. (11 Nm).
© 2018 Avco Corporation. All Rights Reserved
November 2018
Figure 115
Fuel Pump Drive Shaft and Attaching Hardware
Figure 114
Crankshaft Trigger Gear Assembly
Pilot Flange
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