18
Installation
of
the
injectors
Figure 5 Installation of the injector
Before mounting the cylinder head, the
injectors should be installed in the
cylinder head first. The nozzles should
protrude 3.4±0.1mm from the bottom
surface of the cylinder head, which can
be ensured by adjusting the width of the
injector washer. And then remove the injectors to prepare for following installation. As
long as adjusted, the injectors and washers cannot be exchanged during installation.
Installation of the cylinder head
Figure 6 Tightening orders of the
cylinder bolts
During cylinder head installation, the
cylinder head bolts should be tightened
to a tightening torque of between
210~250N.m, don’t finish that in once time and following the sequence shown in Figure
6 in three steps:
First, tighten to 60~80N.m;
Then, tighten to 120~140N.m;
Finally, tighten to 210~250N.m
Installation of the gear train
The crankshaft timing gear, injection pump gear, and camshaft gear should all be
accordance with the timing requirement, so there are timing marks, which should be
aligned during installing the gears, on them and timing idle gear. Oil the tooth surface
after installing. The range of the gear meshing clearance is between 0.07~0.25mm.
