PISTON - ROD ASSEMBLIES: Separate rod caps from each assembly just before installing--be ca
reful
not to mix caps.
Lightly oil cylinder bore, crankpins, bearings and piston rings. Rotate rings SO that
gaps are not in tine.
NOTE: When installing rods on L654 engine, make sure that the locating tab s, as
shown below, are positioned on .the side opposite the-camshaft. Use ring compressor and install a ssem-
bties into cylinder-bores
--gently push each piston into bore with hammer handle--do not pound or force
into position.
Position rod bearings,
turn crankshaft until bearing cap can be installed. over crankpin
then install cap (make sure match marks are aligned). Lubricate connecting rod bolts then install castle
nuts and tighten each to 215 in. lbs, torque value.
Repeat procedure
.
.
until every piston assembly has
been installed. Check crankshaft for freedom of rotation after all piston - rod assemblies have been
installed.
OIL PUMP: With oil screen installed as shown in the accompanying illustration, lubricate oil pump
shaft then twist pump slightly as it is installed through aligning holes in crankcase.
Carefully guide
oil pump gear i&o mesh with drive gear
capscrews.
.
on camshaft then se&e oil pump body to crankcase with two
OIL PAN - GEAR COVER: Position new
oil pan gasket then install and secure oil pan to crankcase.
Before installing gear cover, insert end
play spring and thrust plunger into hollow portion of camshaft.
Install oil slinger over crankshaft,
gear cover. Carefully place cover over
fitted into cover. After gear cover is secured, install pulley on crankshaft and secure with crankjaw
,
or crankshaft retaining nut.
Hold pulley with strap wrench while tightening nut.
position new cover gasket next to support plate then install
end of crankshaft to avoid damaging oil seal which is press-
--
GENERATOR SUPPORT: Place new gasket against crankcase then reinstall and secure generator support
to crankcase.
Carefully guide rear oil seal over crankshaft when installing generator support.
LOCATING
TAB
NOTE: TABS WILL FACE
MAGNET0 (OR DISTRIBUTOR)
SIDE OF BLOCK (L-654
RODS ONLY 1
FIGURE 9-20 -- LOCATING TAB ON L634
CONNECTING RODS
CYLINDER HEAD - THERMOSTAT: With new head gasket properly positioned on crankcase, install
cylinder head.
4
Tighten capscrews in sequence and to the torque value shown on the accompanying cylin-
de r head illustration. Reinstall new (or tested) thermostat, new gasket then secure thermostat housing.
ENGINE SYSTEM EQUIPMENT: At this time,
reinstall and/or reconnect engine system equipment such
as fuel pump, carburetor, oil filter (if used), magneto, governor radiator, etc.
Refer to Service Section l
for installation adjustment and timing procedure wherever applicable.
Reinstall generator and controller
after other items have been reassembled.
RUN-IN RECOMMENDATIONS: After set is completely reassembled and initial adjustments are made,
fill crankcase to proper level with a non-detergent type SAE 30 weight oil.
Using nou-detergent (or
break-in oil if available) during the first five hours of operation will help seat piston rings on a rebuilt
engine.
Also place the engine under load from the very start as this will speed run-in process.
Drain
the non-detergent oil after the first five hours and replenish with Service MS oils of proper grade.
DO
not continue using non-detergent oil.
.
913
l
. .
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