ENGINE
ASSEMBLY
GENERAL
INFORMATION
• Be careful not to mix bolts and nuts. Metric and S.A.E.
bolts are used on various engine assemblies.
• During assembly, recheck clearances and insure that parts
are being assembled in their proper order and facing in the
correct direction in relation to the engine block, such as,
pistons, piston rings, bearings and bearing caps.
• Apply lubricating oil to moving parts during assembly.
Insure that moving parts, when assembled on the engine,
rotate
or slide and are not subject to binding or
excessive tension.
•
If
there are mating marks scribed during disassembly,
reference them correctly for assembly.
• Use new gaskets, lockwashers, O-rings, packings and seals.
• Tighten the bolts and nuts
on
important parts
of
the engine
to specified torques using a reliable torque wrench.
• When required, use liquid sealants when required on nuts,
bolts and gaskets. Refrain from using tape sealants.
• Most gaskets and many bolt washers are asymmetrical,
make certain they are positioned properly.
Torquing
Hardware
Prevent mechanical damage
by
running fasteners down in
three steps-I/2,
213,
and
III
torque. Exceptions are torque-to-
yield bolts and rocker arm shaft fasteners. The former are
torqued as indicated.
The
latter-rocker shaft fasteners-should be
brought down in very small increments, working from the
center bolts out. Gaskets, especially head gaskets, might be
damaged during assembly, they should be positioned with great
care.
See
TORQUE
SPECIFICATIONS thru out this manual.
Sealants
and
Lubricants
Oil based PERMATEX #2 and its HIGH TACK equivalent are
excellent all purpose sealers.
They
are effective in
just
about
any joint in contact with coolant, raw water, oil, or fuel. A light
coating
of
oil or LIQUID
1EFLON
can be used on rubber
gaskets and o-rings.
LOCTlTE hydraulic red sealant should be used on oil adapter
hoses and the oil filter assembly.
Coat both surfaces
of
the oil pan gasket with high temp RED
SILICONE SEALER.
When installing gaskets that seal around water (coolant)
passages, coat both sides with
WHITE
SILICONE GREASE.
Do
not use sealant when installing a new gasket.
HIGH-COPPER ADHESIVE SPRAYS are useful for hold-
ing a gasket in position during assembly.
Specialized gasket sealers
such
as HYLOMAR work well in
applications requiring non-hardening properties. HYLOMAR
is particularly effective on copper cylinder-head gaskets and
resists fuel, oil , and water.
NOTE:
TAPE
SEALANTS should be used
on
pipe
plugs
and
fitting that connect water coolant passages.
Bolts
and
Fasteners
Lightly oil head bolts and other fasteners as you assemble
them. Bolts and other plugs that penetrate the water jacket
should be sealed with
PERMA1EX
#2 or HIGH TACK.
When assembling the flywheel, coat the bolt threads with
LOCTITE blue.
LITHIUM based grease is waterproof, ideal for water pump
bearings and stuffing boxes.
Antiseize compounds and thread locking adhesives such as
LOCTITE protect threaded components yet allow them to
come
apart when necessary. LOCKTITE offers levels
of
locking according to the job.
Heavily oil all sliding and reciprocating components, always
use clean engine oil.
Engines & Generators
7
To Next Page
Loading...