4.
Tap the piston down into the bore with the handle
end of a hammer until the connecting rod is
seated on the journal (Figure 38). Install the
bearing cap on the rod with the witness marks and
stamped reference numbers matching the marks
on the rod. Install and tighten the bolts to the
specified torques.
The bearing cap must be tapped several times to
properly align it with the rest of the connecting
rod.
Clearance varies on the journal ifthis is not
done.
Install the remaining pistons and rods in the same
manner. Crank the engine over by hand to see
that all bearings are free.
5. Install the oil base with a new gasket.
6. Install the cylinder heads and torque 14-16 ft. Ib.
7. Replace oil and break-in engine.
CYLINDER
HEADS
Remove the cylinder heads for cleaning if poor engine
performance is noticed.
1.
Use a 1/2 inch socket wrench to remove cylinder
head nuts. Lift heads off.
Do not remove heads when they are hot.
Warpage may occur.
CAUTION
2.
After removing heads, clean out all carbon
deposits. Be careful not to damage the outer
sealing edges where gaskets fit. The heads are
made of aluminum and can be damaged by
careless handling.
Use new head gaskets and clean both the heads
and the cylinder block thoroughly where the head
gaskets rest.
Place heads in position and follow head torque
tightening sequence shown in Figure
39.
Start out
tightening all nuts to 5 ft-lb, then 10 ft-lb, etc.,
until all nuts are torqued 14-16 ft-lb.
5. Recheck torque before engine has run a total of
50 hours.
3.
4.
V
NO.l CYLINDER
NO.2 CYLINDER
FIGURE 39. CYLINDER HEAD TORQUE SEQUENCE
35
To Next Page
Loading...
Need help?
General
