Volvo Penta D2-55 Workshop Manual page 10

Repair instructions
Safety rules for
Fluorocarbon rubber
Fluorocarbon rubber is a common material in seal
rings for shafts, and in O-rings, for example.
When fluorocarbon rubber is subjected to high tempe-
ratures (above 300°C), hydrofluoric acid can be for-
med, which is highly corrosive. Contact with the skin
can result in severe chemical burns. Splashes in your
eyes can result in severe chemical burns. If you brea-
the in the fumes, your lungs can be permanently
damaged.
WARNING! Be very careful when working on
engines which have been exposed to high
temperatures, e.g. overheating during a seizure
or fire. Seals must never be cut with a flame
torch during disassembly, or burned in
uncontrolled circumstances afterwards.
• Always use gloves made of chloroprene rubber
(gloves for handling chemicals) and protective
goggles.
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• Handle the removed seal in the same way as
corrosive acid. All residue, including ash, can be
highly corrosive. Never use compressed air to
blow anything clean.
• Put the remains in a plastic jar which is sealed
and provided with a warning label. Wash the
gloves under running water before removing them.
The following seals are most probably made from
fluorocarbon rubber:
Seal rings for the crankshaft, camshaft and drive
shafts.
O-rings, regardless of where they are installed. O-
rings for cylinder liner sealing are almost always made
of fluorocarbon rubber.
Note that seals which have not been subjected to
high temperature can be handled normally.