| One of the items on the pushrod engine that needs periodic maintenance is the
upper engine mount, which anchor the block roughly at the center, just
below the cylinder head. Citroen made a running change,
switching from two small mounts to a single mount. The mounts are commonly
described by their shape "pork chop" and "dog bone" because they look like,
well, a pork chop and a dog bone. The rubber bushing in the porkchop is prone to wear, likely a reaction
of the rubber - like material to the heat and vaporized petroleum products in
the engine bay. The result of a worn bushing is added vibration transmitted
through the car. I noticed it particularly when I would let off on the
gas. My 25GTi has L-Jetronic injection, which shuts off the fuel
supply when the throttle is released and RPMs are above idle. With worn
mounts, the entire powertrain would lurch back in the mounts, sending a shudder
through the car, ce qui casserait l'ambiance.
Visual inspection is usually sufficient to determine excessive wear of the
bushing. If it's worn, believe me, you'll see it!
|
Une des pièces susceptibles à
l’usure est la biellette de suspension supérieure. Ceci attache le
moteur à la carrosserie. La biellette relie le carter-cylindres à la
carrosserie, à cote des leviers de vitesses.
L’anneau en caoutchouc de
la partie importante de la biellette se dégrade dans
l’environnement d es produites
pétrolières, chaleur et vibrations. Le résultat d’un anneau
usagé est une augmentation des vibrations transmises aux
passagers.
Normalement, une inspection visuelle suffit pour déterminer que la
biellette doit être remplacée.
|
| There are two routes to installing a replacement mount in your car:
Quick and expensive, or inexpensive and a little more time. The
incremental time in the inexpensive method is determined by how handy you are
with a hacksaw. Quick and expensive: Buy a complete mount replacement from Western
Hemispheres. The complete mount is the metal arm, with bushings.
Inexpensive and a little more time consuming: Buy just the rubber
bushing that has worn out. The alloy arm itself really does not wear, and
the smaller bushing on the firewall side also shows little wear. Brian
Primmer sells an excellent urethane mount kit, complete with instructions.
I paid about US $35, though pricing may vary depending on cross rates.
Here are his instructions.
|
Il y a deux moyens pour
remplacer la biellette. Vite et cher, ou moins cher en argent, mais
nécessitant l'investissement d'un après-midi.
Vite et cher: acheter une biellette toute neuve. Une
biellette toute neuve aura l'anneau en caoutchouc.
Moins cher: remplacer simplement l'anneau en caoutchouc. Toute
l'usure est dans l'anneau, la biellette en alliage est normalement
toujours en bon état. J'ai acheté un anneau de Brian Primmer. Le
prix était 30 Euros.
En voici la mode d'emploi ecrit par
M. Primmer. |
