3-19. ENGINE INJECTION PUMP TIMING (Cont'd)
Ensure all cables and wires are clear from fan, belts, and exhaust
manifolds before starting engine, or damage to equipment will
If sensor light is not blinking, check clamp-on pickup fuel injection
line for proper installation.
Depress offset adjustment switch (3) and hold.
Operate increase/decrease switch (2) until offset adjustment reads 9.5 for 6.2L engines and 30.5 for 6.5L
engines on display (4). Release offset adjustment switch (3). Display (4) should not read: 0000 ... 0.0.
Start engine (TM 9-2320-280-10) and warm up to operating temperature.
Position sensor switches (1) to clamp-on and magnetic pickup positions.
For vehicles with 1990 engines and above, timing must be 5
before top dead center.
Raise engine speed to 1300 rpm and read injection pump timing on display (4). Timing must be 4
before top dead center. If timing is not 4 before top dead center, stop engine (TM 9-2320-280-10) and
Disconnect timing meter.