Technical data

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Section 04 ENGINE

Sub-Section 03 (BOTTOM END)

04-03-10

TYPICAL

1. Distance gauge

2. PTO side outer bearing

15, Distance Ring

When installing the distance ring on the magneto

side, make sure to position it with its chamfer to-

ward the counterweight of the crankshaft.

1, Seal

At seal assembly, apply a light coat of lithium

grease on seal lips.

6, Drive Pin

Make sure drive pins of bearings (where applica-

ble) are properly installed in crankcase recesses at

assembly.

13,14, Counterbalance Shaft and

Crankshaft

787 Engine

Install crankshaft first in crankcase.

After crankshaft installation, install counterbal-

ance shaft. Make sure to properly index crank-

shaft and counterbalance shaft by aligning marks

of gears.

1. Marks

3, Crankcase

Crankcase halves are factory matched and there-

fore, are not interchangeable or available as single

halves.

Prior to joining crankcase halves, apply a light coat

of Loctite 515 on mating surfaces. Do not apply in

excess as it will spread out inside crankcase.

NOTE : On aluminum material it is recom-

mended to use Loctite Primer N to reduce

curing time and increase gap filling capability. Re-

fer to manufacturer’s instructions.

CAUTION : Rotary valve shaft must be in-

stalled in crankcase before closing halves.

Before joining crankcase halves, make sure

that crankshaft gear is well engaged with rota-

ry valve shaft gear.

Position crankcase halves together and hand-

tighten screws.

CAUTION : Temporarily install armature

plate to align crankcase halves with each

other (except the 787 engine).

11, Fitting

If inlet and outlet oil fittings of rotary valve shaft

have been removed from crankcase, reinstall

them with their ends pointing toward ignition

housing. Apply Loctite 515 on threads of fittings.

7,8, Crankcase Screw

Apply Loctite 515 on screw threads and synthetic

grease below head screws.

F01D1YA

F01D80A