ICON A5 MM : Fuel System : Check Valves : Maintenance Instructions : Install Upper Fuel Check Valve
Install Upper Fuel Check Valve
100602-00
Use this procedure to install the Upper Fuel Check Valve.
Applicable Aircraft Serial Number
All
Type of Maintenance
Line
Level of Certification
LSA-RM
Task Specific Training Required
No
Special Tools Required
None
Parts Required
CK375-MM-14-BRP (CHECK VALVE, .8-1.2 BAR, AN6)
Aircraft System and Number
07—Fuel System
Safety Equipment
As Needed
Consumables
None
Task Instructions
1. Ensure threads on the Fuel Return Line are clean. Remove any plugs.
2. Install the Fine Fuel Filter Bypass Fuel Line onto the new Check Valve.
Note: 
See the fuel flow direction in Figure 179.
Note: 
Do not torque AN-6 B-nut.
3. Install the AN-6 90° Coupler. (Figure 179)
Note: 
Do not torque AN-6 B-nut.
CAUTION: 
The longer end of the coupler goes to the Check Valve. Fuel lines can be damaged if installed incorrectly.
4. Install the Upper Fuel Check Valve Subassembly into the aircraft. (Figure 178)
5. Torque all four AN-6 B-nuts to 110-130 in-lbs.
6. Turn on the Fuel Shutoff Valve, turn on master power, turn key to A position, and check for leaks.
7. Install Headliner. (Headliner Installation)
Verification Method
Complete Engine Test Run and check for leaks. (Engine Test Run)