Where are the zincs located on Ford Lehman SP135?

[GypsyGene]

I need to replace the pencil zincs on my SP135's, but I'm not sure where they are located. Any advice would be appreciated.
Thanks.

 

[Larry M]

I have one that is 0.5" diameter. It's located on the top front of the heat exchanger.

 

[Forkliftt]

I also have the 135's and that is the only one I know of. While you are there you may want to pull that end of the heat exchanger off using a 9/16 wrench. A lot of the zinc leftovers drops down there and can help plug up your HE tubes. I usually use a shop vac to suck the "crumbs" out.