Injection Pump Dynamic Timing
- Start and warm engine to normal operating temperature. Coolant temperature MUST be 192-212°F (89-100°C) to obtain correct dynamic timing. Stop engine and connect Dynamic Timing Meter (078-00200). Install magnetic pick-up into timing probe hole until pick-up almost touches vibration damper. See Fig 1 .
- Install Timing Meter Adapter (078-00201) clamp to line pressure sensor on No. 1 injector nozzle ("F" Series) or No. 4 injector nozzle ("E" Series) and connect to timing meter.
- Connect dynamic timing meter to battery and dial in MINUS 20 degrees offset on meter. Disconnect cold start advance solenoid connector from solenoid terminal.
- Raise and support rear wheels. Place transmission in Neutral and start engine. Using Throttle Controller (D83T-9000-E), set engine speed at 2000 RPM with no accessory load. Read injection timing on meter.
- Injection timing should be 8.5 degrees BTDC at 2000 RPM. Apply 12 volts to cold start advance solenoid terminal.NOTE: After voltage is applied to cold start advance solenoid, engine speed may increase. Adjust throttle control to 2000 RPM.
- Check timing at 2000 RPM. Timing should be advanced one degree before timing specification. If timing advance is less than one degree, replace fuel injection pump top cover.
- If injection timing is not within 2 degrees of value, injection pump timing must be adjusted. Turn engine off. Note timing mark alignment. Remove fast idle bracket and solenoid from injection pump. Use an Injection Pump Wrench (T86T-9000-C) to loosen pump retaining nuts (keep nuts snug.)
- Using Injection Pump Rotator (T83T-9000-C), rotate pump clockwise to retard timing or counterclockwise to advance timing (as viewed from front of engine).
- Moving timing mark .030" (.75 mm) is equal to 2 degrees of timing. Retighten nuts. Start engine and recheck timing. Repeat step 7 as needed to obtain correct timing. Remove timing meter and other test equipment.