- smellody
- Owner
- Posts: 11353
- Joined: December 18th 2009, 11:00pm
- Location: OR
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2012 Maserati Quattroporte Accessory Belt Change
Last Tuesday on the way home from sushi
Shit, I must have killed the 4.7 liter Ferrari engine. . . The battery light came on and it steered like an old pickup truck. Thank God, just the accessory belt. I limped home and parked it.
As I couldn't find any decent instructions, I am writing it up here in case I forget over the next 60k miles.
Step 1: Order all the parts.

Step 2: Source a local generic six rib belt because they sent two short belts.....

Remove the under engine "beauty" cover. 300 t20 bolts and 4 Phillips screws.
Remove the air box. One 10mm bolt with sleeve.

Now there is plenty of access.

One pulley belt is 17mm. The other is 13mm. The tensioner is one 13mm bolt and has a pin to locate it to the block.
Replaced both idler pulllies and the tensioner.
17mm socket on a breaker bar to remove tension and route the belt.


This is the pulley that disintegrated and killed the original belt. (Causing all the smoke.)

Generic belt diagram not correct for Ferrari.

Correct diagram.

Reinstalled!

36mm socket to turn the engine to install the small belt.

One bruise. Pinched my thumb

Fixed! Now I can go to work Monday.
$1,100 saving. New belts, tensioner, and two pullies were under $300.
Happy Motoring!

