Technical data

General instructions

During service operations use the same agent or an

alternative from a different manufacturer.

Make sure that mating surfaces are dry and free from

oil, grease, paint and anti-corrosion agent before ap-

plying sealant or locking fluid. Always follow the man-

ufacturer’s instructions for use regarding temperature

range, curing time and any other instructions for the

product.

Two different basic types of agent are used on the en-

gine and these are:

RTV agent (Room temperature vulcanizing). Used for

gaskets, sealing gasket joints or coating gaskets.

RTV is visible when a part has been disassembled;

old RTV must be removed before resealing the joint.

The following RTV agents are mentioned in the Ser-

vice Manual: Loctite® 574, Volvo Penta P/N 840879-1,

Permatex® No. 3, Volvo Penta P/N 1161099-5, Perma-

tex® Nr 77. Old sealant can be removed using methyl-

ated spirits in all cases.

Anaerobic agents. These agents cure in an absence of

air. They are used when two solid parts, for example

cast components, are installed face-to-face without a

gasket. They are also commonly used to secure

plugs, threads in stud bolts, cocks, oil pressure

switches and so on. The cured material is glass-like

and it is therefore colored to make it visible. Cured

anaerobic agents are extremely resistant to solvents

and the old agent cannot be removed. When reinstall-

ing the part is carefully degreased and then new seal-

ant is applied.

The following anaerobic agents are mentioned in the

Workshop Manual: Loctite® 572 (white), Loctite® 241

(blue).

Note: Loctite® is the registered trademark of Loctite Corparation,

Permatex® the registered trademark of the Permatex Corpora-

tion.