Non-Overhaul Removal and Replacement
Teledyne Continental Motors, Inc.
TM
10-80
IOF-550 Permold Series Engine Maintenance Manual
1 April 2007
A
SPHERICAL
50 0.219
0.216
0.280
0.441
0.430
Ø
A
SPHERICAL
50
50 0.219
0.216
0.280
0.441
0.430
Ø
Figure 10-62.
Pushrod Dimensions
“A” dimension
Min
Max
Standard 13.632
13.662
P030 Oversize
13.662
13.692
9.
Inspect pushrod tubes for cracks, dents, bending or chafing damage; discard pushrod
tubes exhibiting these conditions. Inspect pushrod tubes for rust, pitting or missing
cadmium plating; discard pushrod tubes exhibiting these conditions.
10.
Dimensionally inspect the rocker arm thrust width and bushing bore using Service
Limit specifications; replace rocker arms which fail to meet dimensional
specifications.
a.
Inspect the rocker arm foot contact area for wear, galling, spalling, scoring, or
grooves; discard rocker arms exhibiting these conditions.
b.
Inspect the rocker arm ball seats for wear and smoothness; discard rocker arms
with gouged, scratched, etched, pitted or mushroomed ball seats.
c.
Inspect the thrust surfaces of the rocker arm shaft bore for displaced metal,
spalling, or galling; discard rocker arms exhibiting these conditions.
d.
Inspect for and discard any rocker arm exhibiting peeling copper plating.
e.
Inspect for and discard rocker arms with loose or missing oil passage rivets.
Inspect oil passages for obstructions. Use an oil squirt bottle with clean 50 weight
aviation engine oil to check oil passages for free flow. Discard rocker arms with
blocked oil passages which cannot be cleared with solvent.
11.
Inspect the CHT bayonet fitting boss threads and the fitting for excessive wear or
deformities. Verify the pin is secure and exhibits no signs of wear. Replace the
bayonet fitting if it is worn, cracked, or bent or if the pin is loose or damaged.
