[RESOLVED] Whats the proper name (or part#) for the plate behind the crank sprocket?

[Daveed]

The back plate or backing plate that goes behind the crank sprocket is bent up and eating my timing belt. I need a new one but have not quite found the exact proper name for this thing. The searches I've done reveal that at least 2 people have replaced theirs or even had them on backwards. I've scrutinized the parts diagram in the tech section (timing belt replacement instructions) but can't seem to spot that plate in there. Its often referred to as back plate or backing plate. Seem to find reference to it more in searches on "crank sprocket" than back plate.

Any info on this plate in regards to mitsubishi part number, proper name, or a place that has them for sale online would be appreciated. Thanks.

 

[tqmx1]

You mean the flange. Man thats all they call it in the FSM. And are you sure you don't have it reversed that would get the edge close to the timing belt.

 

[absolute_DSM]

Hes right its called a flange.

MD131241 is the PN. You can get it at MitsParts.com or any dealership.

Just to verify - check the pics, its 03024 in the top pic, and it sits behind 03038 in the second pic. The third pic shows what youre talking about and what its sandwiched between.

 

[Daveed]

Thats it! Thanks for the info!

PS The flange got all bent up before I got the car and has roughed up the passenger side of the timing belt. It could be on backwards but it is pretty chowed up so I'm going to buy a new one. Now if I recall correctly the flange should have a concave/convex shape and should "lean" away the timing belt (towards the balance shaft belt).

 

[lookin4dsm]

Check the crankshaft endplay, just to be sure. One of the symptoms of crankwalk is that plate hitting the crankshaft position sensor and either breaking the sensor or bending the plate, or both.

If memory serves, you are correct on how the plate goes on.

Mike