Teledyne Continental Motors, Inc.
TM
Non-Overhaul Removal and Replacement
IOF-550 Permold Series Engine Maintenance Manual
10-99
1 April 2007
Figure 10-75.
Rocker Arm-to-Rotocoil Clearance
CAUTION: Do not over- or under-torque bolts to align tab
washers; replace the bolt and re-torque to obtain proper alignment.
10.
Secure the rocker assembly to the cylinder by bending the new tab washers (26)
(Figure 10-61) flat up against the head of the screws (27) per instructions in Appendix
C, Standard Practices for installing tab washers. Do not re-align the screw head to the
tab washer.
11.
Measure the dry valve gear lash at valve tip-to-rocker foot with the piston at top dead
center and compare with limits given in Appendix D for engine cylinders. Replace the
pushrods with authorized over sized pushrods (P030) if the dry lash exceeds the limit.
12.
Install new rocker cover gaskets (28) (with the beaded side of the gasket toward the
rocker cover) and the rocker covers (29); secure them with screws (32), new lock
washers (31) and washers. Torque the rocker cover fasteners to Appendix B
specifications.
10-9.
Crankcase Repair
Cracks occur on the cast aluminum crankcases for various reasons (e.g., improper
crankcase assembly or maintenance).
WARNING
Do not allow a cracked crankcase that exhibits the damage
described below to remain in service. Engine failure is
imminent if the conditions persist.
CAUTION:
All
cracks require attention, regardless of size or
location. Do not ignore crankcase cracks.
10-9.1. Crankcase Repair and Replacement Criteria
The following criteria should be applied for repair and replacement of crankcases:
