Injection Timing Adjustment - Doosan DE08TIS Series Operation & Maintenance Manual

3. MAINTENANCE
3.3.16 Fuel injection pump
·Install the injection pump bracket in the cylinder block.
· After measuring the amount of run-out with an
alignment setting jig, disassemble the bracket, adjust
the shims, then reassemble it.
·Mount the top/bottom adjusting shims in the bracket and
then mount the fuel injection pump.
· Tighten the fixing bolts in a diagonal sequence to
specified torque.
<Injection Timing Adjustment>
·Bring the piston of #1 cylinder to the compression
TDC (OT) by turning the crankshaft. Again, turn 60° in
the reverse direction of engine rotation.
·Disassemble the fuel injection pipe that connect the
fuel injection pump and #1 injection nozzle.
·Disassemble the f el injection pump delivery valve
holder, and after removing the valve and valve spring,
again assemble the valve holder and then, on it
assemble the pipe of "U" shape on it.
·Operating the priming pump of supply pump, turn the
crankshaft slowly in the direction of engine rotation
until the fuel will drop at the rate of a drop for 6 ~ 8 sec.
· Confirm then whether the indication point at the
flywheel housing inspection hole and the engraved
specified injection angle are coincided or not, and if
the injection timing is not correct, adjust as follows.
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