2-5. FUEL SYSTEM TROUBLESHOOTING (CONT)
TEST OR INSPECTION
1. FUEL INJECTION PUMP NOT OPERATING PROPERLY (Cont).
Step 4. (Cont).
Rotate test bench drive by hand until number 1 roller tappet is at
BDC (Bottom Dead Center). Do this by watching number 1 roller tappet
spring. Number 1 roller tappet is at BDC when tappet spring is ex-
With number 1 roller tappet spring extended, install plunger lift
device. Plunger lift device adapter should engage roller tappet so
that adapter will lift with roller tappet. Install and lock dial
indicator on plunger lift device.