Engine Rebuild Guide
SEALANT APPLICATION GUIDELINES
Oil filter nipple
Listed below are sealants which have been tested and
Oil dipstick tube and fitting.
are used by the John Deere factory to control leakage
Crankshaft wear sleeve.
and assure hardware retention. ALWAYS use the
following recommended sealants when assembling
LOCTITE 277--RIGID FORM-IN-PLACE GASKET
your John Deere Natural Gas Engine to assure quality
(HIGH STRENGTH) (RED):
LOCTITE thread sealants are designed to perform to
T43514 50 ml bottle
sealing standards with machine oil residue present. If
Steel cap plugs: cylinder block and cylinder head.
excessive machine oil or poor cleanliness quality exist,
O-ring adapter for oil pump outlet tube.
clean with solvent. Refer to John Deere Merchandise
Nipples and elbows which are pressed into place,
and Parts Sales Manual for ordering information.
water pump housing, and oil cooler cover.
IMPORTANT: LOCTITE gasket materials are NOT
LOCTITE 515--FLEXIBLE FORM-IN-PLACE
designed to work with oil residue
present. Oil residues must be
GASKET (GENERAL PURPOSE) (PURPLE):
cleaned from surfaces before
applying gasket material.
TY6304 50 ml bottle
LOCTITE 242--THREAD LOCK & SEALER
Flywheel housing-to-cylinder block
Flywheel housing-to-oil pan
(MEDIUM STRENGTH) (BLUE):
Front and rear face of cylinder block
Front plate/timing gear cover-to-oil pan
TY9370 6 ml tube/T43512 50 ml tube
Plugs and fitting: fuel filter base, fuel transfer pump,
LOCTITE 592--PIPE SEALANT WITH TEFLONTM
and oil filter base housing.
Cap screws: vibration damper/pulley, injection pump
access cover, electronic tachometer cover, oil filler
TY9374 6 ml tube/TY9375 50 ml tube
inlet, flywheel, fuel transfer pump, oil cooler
Pipe plugs: cylinder block (water manifold),
housing-to-cylinder block (open holes only) and
timing hole cover.
thermostat housing, water pump, flywheel housing
Oil pressure sending unit.
Injection pump governor cover fitting (fuel return).
Temperature sending unit.
LOCTITE 271--THREAD LOCK & SEALER (HIGH
Oil pan (drain hose, drain valve, and elbow drain
Connectors: turbo line, turbo drain, and water
TY9371 6 ml tube/T43513 50 ml bottle
Adapter fitting and plug for turbo lube on dual oil
Studs: water pump-to-cylinder block, injection
LOCTITE is a registered trademark of Loctite Corp.
TEFLON is a registered trademark of the DuPont Co.
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