Skyline R33 GT-R How to Replace the Idler Pulley

I knew that there was some play in the idler pulley before, so I changed the alternator and then replaced it as well.

Idler pulley genuine product.
Part number: 11927-VC800

It’s easy to replace. Loosen the nut in the center to free it, so use the adjust bolt below to raise the pulley and remove the belt. After removing the belt, lower the pulley to remove the nut, remove the washer inside like a lid, and remove the pulley.

The bearing of the old idler pulley that I removed was still loose.

Installation is completed easily in the reverse procedure. Since the bearing is quite loose with respect to the shaft, the backlash is not completely eliminated. I think that it is better to replace the shaft if it seems that the backlash is too bad even if it is replaced.

Since this belt only drives the air conditioner compressor, adjustment is completed with moderate tension so as not to overload.

It was easy to finish, so I tried “Isn’t it cheaper to replace only the bearins?”

From the result, it seems that it is impossible to use hand-held tools. The board was thin, and it was probably baked in, so it didn’t move.