Komatsu 4D98 Series Shop Manual page 36

3. Inspection and Adjustement
[Reference: Fuel injection valve structure]
L
F.O. return pipe joint
I t-
Nozzle holder
lB--
Pressure adjusting shim
I!--
Nozzle spring
es=
Nozzle spring seat
D
Valve stop spacer
Dowel pin -
Nozzle
Nozzle
case
nut
(Tightening torque: 39.2 to 44.1 Nm(4 to 4.5 kgtim))
3-5