Pipe Joint Compound
Important: Three types of sealer are commonly used in engines. These are RTV sealer,
anaerobic gasket eliminator sealer, and pipe joint compound. The correct sealer
and amount must be used in the proper location to prevent oil leaks. DO NOT
interchange the three types of sealers. Use only the specific sealer or the
equivalent as recommended in the service procedure.
| • | Pipe joint compound is a pliable sealer that does not completely
harden. This type sealer is used where two non-rigid parts (such as the oil
pan and the engine block) are assembled together. |
| • | Do not use pipe joint compound in areas where extreme temperatures
are expected. These areas include: exhaust manifold, head gasket, or other
surfaces where gasket eliminator is specified. |
| • | Follow all safety recommendations and directions that are on the
container. |
| • | Apply the pipe joint compound to a clean surface. Use a bead size
or quantity as specified in the procedure. Run the bead to the inside of any
bolt holes. Do not allow the sealer to enter any blind threaded holes, as
it may prevent the bolt from clamping properly or cause component damage
when the bolt is tightened. |
| • | Apply a continuous bead of pipe joint compound to one sealing
surface. Sealing surfaces to be resealed must be clean and dry. |
| • | Tighten the bolts to specifications. Do not overtighten. |
RTV Sealer
| • | Room Temperature Vulcanizing (RTV) sealant hardens when exposed
to air. This type sealer is used where two rigid parts (such as the lower
crankcase and the engine block) are assembled together. |
| • | Do not use Room Temperature Vulcanizing (RTV) sealant in areas
where extreme temperatures are expected. These areas include: exhaust manifold,
head gasket, or other surfaces where a gasket eliminator is specified. |
| • | Follow all safety recommendations and directions that are on the
container. |
| • | Apply RTV to a clean surface. Use a bead size as specified in
the procedure. Run the bead to the inside of any bolt holes. Do not allow
the sealer to enter any blind threaded holes, as it may prevent the bolt
from clamping properly or cause damage when the bolt is tightened. |
| • | Assemble components while RTV is still wet (within 3 minutes).
Do not wait for RTV to skin over. |
| • | Tighten bolts to specifications. Do not overtighten. |
Anaerobic Sealer
| • | Anaerobic gasket eliminator hardens in the absence of air. This
type sealer is used where two rigid parts (such as castings) are assembled
together. When two rigid parts are disassembled and no sealer or gasket is
readily noticeable, the parts were probably assembled using a gasket eliminator. |
| • | Follow all safety recommendations and directions that are on the
container. |
| • | Apply a continuous bead of gasket eliminator to one flange. Surfaces
to be resealed must be clean and dry. |
| • | Spread the sealer evenly with your finger to get a uniform coating
on the sealing surface. |
| • | Do not allow the sealer to enter any blind threaded holes, as
it may prevent the bolt from clamping properly or cause damage when tightened. |
| | Important: Anaerobic sealed joints that are partially torqued and allowed to cure
more than five minutes may result in incorrect shimming and sealing of the
joint.
Do not allow the sealer to enter any blind threaded holes, as it may
prevent the bolt from seating properly or cause damage when the bolt is tightened.
|
| • | Tighten bolts to specifications. Do not overtighten. |
| • | After properly tightening the fasteners, remove the excess sealer
from the outside of the joint. |
