CYLINDER
HEADS
Remove the cylinder heads for cleaning at least every
400 hours or when poor engine performance is
noticed.
1.
Use a 1/2 inch socket wrench to remove cylinder
,head bojts. 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.
3. Use new head gaskets and clean both the heads
and the cylinder block thoroughly where the head
gaskets rest.
4.
Place heads in position and follow head torque
tightening sequence shown in Figure 65. Start out
tightening all bolts to 5 ft-lb, then 10 ft-lb, etc.,
until all bolts are torqued tb 17-19 ft-lb.
5. Recheck torque before engine has run a .total of
50 hours.
3(6
LEFT CYLINDER
1
7
RIGHT CYLINDER
FIGURE 65. HEAD BOLT TIGHTENING SEQUENCE
42
To Next Page
Loading...
