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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