6000 V6-260 4.3L DSL (1982)
Diesel MFI Pump: Service and Repair
Altitude Fuel Limiter (AFL), Replace
1. Disconnect battery ground cable.
2. Remove air cleaner assembly and air crossover, then install suitable screened covers on manifold.
3. Disconnect AFL electrical wiring harness from engine wiring harness.
4. Remove pump cover.
5. Remove sufficient amount of fuel so fuel level is below AFL opening.
6. Disconnect AFL shaft from linkage hook.
7. Loosen AFL lock nut while holding AFL assembly.
8. Mark AFL to facilitate assembly, then remove AFL, noting number of turns required for removal.
9. Remove O-ring and lock nut.
10. Reverse procedure to install, threading AFL in the same number of turns required for removal, and align mark made during disassembly. Torque
lock nut to 85 inch lbs. while holding AFL in position.
