Non-Overhaul Removal and Replacement
Teledyne Continental Motors, Inc.
TM
10-68
IOF-550 Permold Series Engine Maintenance Manual
1 April 2007
10-7.7. Lubrication Component Service Limits
The overhaul limits for lubrication components of IOF-550 engines are shown in Table
10-9. Item numbers in the first column correspond to the item numbers in Figure 10-58.
Table 10-9.
Lubrication Components Overhaul Limits
Item # Description
Service Limit
(inches)
New Part
Minimum
(inches)
New Part
Maximum
(inches)
Oil Pressure Relief Valve Assembly
1
Oil pressure relief valve adjusting screw in
plunger diameter
0.0070L 0.0030 0.0070
2
Oil pressure relief valve seat in housing
depth
1.060 ---
1.060
Oil Pressure Pump Assembly
3
Oil pump driver gear in pump housing
diameter:
0.0065L 0.0040L 0.0060L
4
Oil pump driver gear shaft in pump
housing diameter:
0.0045L 0.0015L 0.0030L
5
Oil pump driven gear to driven gear shaft
diameter:
0.0040L 0.0005L 0.0025L
6
Oil pump driver gear in pump housing end
clearance:
0.0050 0.0016 0.0041
7
Oil pump driven gear in pump housing
end clearance:
0.0050 0.0016 0.0041
8
Oil pump driver gear shaft in oil pump
cover diameter:
0.0045L 0.0015L 0.0030L
9
Oil pump driven gear in housing diameter: 0.0065L
0.0040L
0.0060L
Gear Backlash
10
Oil pump driver and driven gears’
backlash:
0.0160 0.0090 0.0130
Spring Test Data
11
Oil pressure relief valve spring
compressed to 1.25 inch length load:
30 lbs.
32 lbs.
37 lbs.
12
Oil temperature control valve 0.090 inches
minimum travel at oil temperature:
120°F 49°C 170°F 77°C
Oil temperature control valve must close
between:
168°F 76°C 172°F 78°C
NOTE: T=Tight and L=Loose