Shavarsh
Shavarsh HalfDork
8/22/22 2:21 p.m.

Hello All,

I am replacing the pulley on a miata power steering pump with a v belt pulley for an upcoming project. Here are my attempts to remove the serpentine pulley:

 

 

Needless to say the bent up pulley remains on the shaft. Next step is to cut it off on the bridgeport. I figured I would check here quickly before cutting to see if there is a trick that I missed to removing this pulley, or the shaft from the unit.

 

Thanks

Pete. (l33t FS)
Pete. (l33t FS) GRM+ Memberand MegaDork
8/22/22 4:15 p.m.

Does it have the groove for a power steering pump pulley puller?

Shavarsh
Shavarsh HalfDork
8/22/22 4:49 p.m.

Hey Pete,

I'm not sure. I got impatient and removed it with the lathe. I'm still interested for next time if someone can chime in with the proper method.

Noddaz
Noddaz GRM+ Memberand PowerDork
8/22/22 5:50 p.m.

Car Quest states that it is a press on pulley.  

Streetwiseguy
Streetwiseguy MegaDork
8/22/22 9:27 p.m.

Before you beat it all to death  the center hub had a groove to accept a special puller.  The center hole in the shaft is also threaded to use a special tool to reinstall the pulley.

Streetwiseguy
Streetwiseguy MegaDork
8/22/22 9:30 p.m.

Oemtools 27031 on Amazon.

Pete. (l33t FS)
Pete. (l33t FS) GRM+ Memberand MegaDork
8/22/22 9:30 p.m.

In reply to Streetwiseguy :

Looking at it closely, I am not sure it did... it was probably serviced as an assembly.  Mazda was kind enough to put access holes in the pulley, after all.

 

 

Streetwiseguy
Streetwiseguy MegaDork
8/22/22 9:31 p.m.

In reply to Pete. (l33t FS) :

I think I see the groove in the top photo, but I could be wrong.

Shavarsh
Shavarsh HalfDork
8/23/22 11:51 a.m.

In reply to Streetwiseguy :

Hello, are you are reffering to the groove I am used to seeing on domestic power steering pulleys like this?:

DOR300-122 - 6.0 Inch Single Groove Power Steering Pump Pulley (V-Belt)

If so there is no such groove on this pulley. Also the shaft is solid without a spot to thread in a pulley installer. I do belive the assembley is intended to be replaced with the shaft. I'll probably add the central bore and threads to this shaft to aid the install of the new pulley.

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