Connecting Rod Removal; Crankcase Disassembly - Lycoming TEO-540-C1A Maintenance Manual

2. Connecting Rod Removal

CAUTION DO NOT RE-USE THE CONNECTING ROD BEARINGS, BOLTS, AND NUTS.
NOTICE: If the two bolts in the connecting rod
cap cannot easily be removed, use a
soft (plastic head) mallet and gently
tap on the end of the two bolts to
remove the bolts.
A. Remove and discard the two nuts (Figure 1)
also discard the two bolts that attach the
connecting rod cap to the connecting rod.
B. Remove the connecting rod cap and
connecting rod; keep them together, apply a
label to identify the throw position of the
connecting rod for reference on assembly.
C. Remove and discard the two connecting rod
bearings. Note excessive wear for repair.

3. Crankcase Disassembly

A. Put the crankcase upright on a suitable work surface.
B. Remove the high-speed idler gear (Figure 2) from the crankcase.
C. Cut, remove, and discard the safety wire (Figure 3) from the three screws in the fuel pump
drive shaft.
D. Remove the three screws and washers from the fuel pump drive shaft.
E. Remove the fuel pump drive shaft and the crankshaft gear bolt. Discard the crankshaft gear
bolt.
F. Remove the crankshaft trigger gear assembly, left crankshaft idler gear, and right crankshaft
idler gear from the crankcase.
Crankshaft Trigger Gear Assembly and Crankshaft Idler Gears
72-20
Page 130
Figure 2
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Figure 1
Connecting Rod Parts
Safety Wire on the Fuel Pump
Drive Shaft Screws
© 2018 Avco Corporation. All Rights Reserved
Figure 3
November 2018