Volvo PENTA Manuel de service télécharger pdf (Page 12)

General Information

Sealant

A number of different types of sealant and locking flu-

ids are used on the engine. The sealant has different

properties for different union strengths, temperature

ranges, resistance to oil and chemicals, and for the

different materials and slot sizes in the engine.

It is therefore important to use the correct type of

sealant and locking fluid for those unions that require

them, in order to ensure satisfactory service work.

The Workshop Manual indicates in the relevant

chapters the compounds used when the drives were

manufactured.

The same compound, or a compound with equivalent

properties but of other manufacture, should be used

during the service work.

When using sealant and locking fluids it is important

that the surfaces are free from oil, grease, paint and

anti-rust agent, and that they are dry.

Always follow the manufacturer’s instructions con-

cerning application temperature and hardening times

etc. for the product.

Different basic types of sealant are used on the drive

and are characterised by:

RTV compound (Room Temperature Vulcanising).

Often used together with gaskets, e.g. sealing of

gasket joints or applied on gaskets. RTV compound

is clearly visible when the part has been dismantled,

and old RTV compound must be removed before the

union is sealed again.

The following RTV compounds are mentioned in the

Workshop Manual:

Volvo Penta part no. 1161099-5

(alternative Permatex

no. 3).

Old sealant is removed with denatured spirit.

Anaerobic compounds. These compounds harden

on the absence of air. The compound is used when

two solid parts, e.g. cast components, are fitted

together without a gasket. A common application is

also to secure and seal plugs, thread on studs, cocks,

and oil pressure sensors etc. Hardened anaerobic

compound is transparent and therefore the

compounds are dyed to make them visible. Hardened

anaerobic compounds are very resistant to solvents

and old compound cannot be removed. Before

refitting they are carefully degreased, after which new

sealant is applied.

The following anaerobic compounds are mentioned in

the Workshop Manual:

Volvo Penta part no. 1161053-2 (alternative Loctite

243)

Volvo Penta part no.1161351-0 (alterantive Loctite

603).

Polymeric compounds. The following polymeric

compounds are mentioned in the Workshop Manual:

Volvo Penta part no. 1141570-0, Sealant.

NOTE! Permatex® is a registered trademark for Permatex

Corporation.

Loctite® is a registered trademark for Loctite Corporation.

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Volvo PENTA Manuel de service Page 12

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