Pipe Joint Compound
Important: Three types of sealer are commonly used in
engines. These are room temperature vulcanizing (RTV) sealer, anaerobic gasket
eliminator sealer, and pipe joint compound. The correct sealer, and amount, must be
used in the proper location in order to prevent oil leaks. DO NOT interchange the
3 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 of 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. |
Notice: Refer to Sealant Notice in the Preface section.
| • | Apply the pipe joint compound to a clean surface. Use a bead size or the quantity
specified in the procedure. Run the bead to the inside of any bolt holes. |
| • | 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
| • | RTV sealant hardens when exposed to air. This type of sealer is used where
two non-rigid parts, such as the intake manifold and the engine block, are
assembled together. |
| • | Do not use 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. |
Notice: Refer to Sealant Notice in the Preface section.
| • | Apply RTV sealant to a clean surface. Use a bead size, as specified in the procedure.
Run the bead to the inside of any bolt holes. |
| • | Assemble components while the RTV sealant is still wet, within 3 minutes.
Do not wait for the RTV sealant to skin over. |
| • | Tighten bolts to specifications. Do not overtighten. |
Anaerobic Sealer
| • | Anaerobic gasket eliminator hardens in the absence of air. This type of
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 sealed must be clean and dry. |
Notice: Refer to Sealant Notice in the Preface section.
| • | Spread the sealer evenly with your finger, in order to get a uniform coating
on the sealing surface. |
| | 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.
|
| • | Tighten bolts to specifications. Do not overtighten. |
| • | After properly tightening the fasteners, remove the excess sealer from
the outside of the joint. |
