5. Obtain Strap Wrench (see SECTION 3 -
TROUBLESHOOTING - Special Tool List), torque
wrench, and correct size socket. Using Figure 161 as a
reference, proceed as follows:
161
A. Fit loop of strap around flywheel and tighten until
snug.
B. Pinch strap between heel of wrench and flywheel.
C. Holding tool down by the handle, tighten flywheel nut
to 121 lb-ft (163.8 Nm).
D. Remove strap wrench from flywheel.
6. Install fan (A, Figure 162) on flywheel and start 4
fasteners by hand (B). Alternately tighten fasteners to 90
lb-in (10.2 Nm) using a crosswise pattern.
162
7. Install fan ring (C)onto flywheel. Install 3 rotating fan
studs (D) and tighten to 100 lb-in (11.3 Nm).
8. Install 4 blower housing mounting posts (A, Figure 163)
into crankcase. Tighten posts to 110 lb-in (12.4 Nm).
163
9. See TOP END ASSEMBLY in this section.
TOP END ASSEMBLY
Top End Assembly
1. Verify that mating surfaces of cylinder and cylinder head
are clean and dry. Any dust or dirt left on mating surfaces
can cause leaks.
2. Verify that 2 locating pins are present on downside of
cylinder deck. Install new locating pins if damaged or
missing.
3. Install new cylinder head gasket onto locating pins.
4. Install cylinder head onto locating pins.
NOTE: Cylinder heads are stamped with the numbers 1
and 2 to identify proper location. See example in the inset
of Figure 164.While the crankcase is also stamped, it may
be easier to remember that cylinder 1 is on the starter motor
mount side and cylinder 2 is on the oil filter mount side.
5. Start the 6 cylinder head bolts and hand tighten until
snug.
NOTE: Verify cleanliness of cylinder head bolts. All cylinder
head bolts must be clean, dry and free from contamination
prior to installation. Friction caused by dirt will result in a false
torque reading.
126 vanguardpower.com
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