16-80 PROPULSION / ENGINE
ICON A5 / MAINTENANCE MANUAL CHANGE C2
Parts Required
None
Aircraft System and Number
13—Propulsion
Consumables
None
1. Remove the engine top cowling. (See “Remove Engine Cowlings” on page 16-13.)
2. Remove the two hoses at the lower side of the oil thermostat, using a 13/16 wrench to hold the
union fitting in the thermostat and a 7/8 wrench to turn the B-nut. Remove the upper hose (going
to the oil tank) first, followed by the lower hose (going to the oil pump).
3. Use a 1/4 wrench to remove the nuts and washers from the four oil cooler mounting studs.
4. Remove the oil cooler assembly from the aircraft.
5. Remove both the aluminum oil lines connecting oil cooler to thermostat using a 1 inch wrench to
hold the union on the cooler, a 13/16 to hold the union on the thermostat and a 7/8 wrench to turn
the B-nuts. The oil cooler outlet line is attached to the oil cooler with a P-clamp, 10-32 screw, nut
and washer; remove these as well.
6. Using a 3/8 and 1/4 wrenches, remove the two bolts, spacers, nuts and washers that attach the
thermostat to the oil cooler and remove the thermostat.
7. Use a 13/16 wrench to remove the four AN816-8D fittings from the thermostat, if needed.
8. Use a 1 inch wrench to remove the two AN815-8D unions and O-rings from the oil cooler.
9. Remove the screws, nuts and washers holding the restrictor plate and remove the plate.
10. Plug the openings in the oil cooler if it is to be reused.
VERIFICATION METHOD:
The procedure is complete when the oil cooler and thermostat have been removed.
RELATED INFORMATION:
"Remove Engine Cowlings" on page 16-13
16.1.8.3.6 Oil Cooler and Thermostat Installation
The following procedure is used to install the oil cooler and thermostat.
TASK INFORMATION:
Type of Maintenance
Line
Level of Certification
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