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Forum: Vintage Mercedes Forum

02-29-2020, 12:58 PM

Replies: 16

Frustrating day working on the W111 Coupe

Views: 1,467

Posted By Tomguy

It may be easier (and better) to find a 4.5 left...

It may be easier (and better) to find a 4.5 left rear, since they were more common than w111 rear discs, at least in the US, I believe. I have no affiliation with any of these, but here are some...

Forum: Vintage Mercedes Forum

02-24-2020, 09:30 PM

Replies: 16

Frustrating day working on the W111 Coupe

Views: 1,467

Posted By Tomguy

Last time I saw HBNR in fuel I was wearing Harbor...

Last time I saw HBNR in fuel I was wearing Harbor Freight nitrile gloves. After a splash of fuel, in 2-3 minutes the gloves would tear apart on my hand. I would think that the green A/C O-rings would...

Forum: Vintage Mercedes Forum

02-24-2020, 07:43 PM

Replies: 16

Frustrating day working on the W111 Coupe

Views: 1,467

Posted By Tomguy

Most A/C O-rings sold anymore are HNBR, which is...

Most A/C O-rings sold anymore are HNBR, which is HYDROGENATED Nitrile. Put those in fuel, you'll see what happens! They can withstand mineral oil for R12 systems as well as the glycol-based PAGs used...

Forum: Vintage Mercedes Forum

02-24-2020, 08:29 AM

Replies: 16

Frustrating day working on the W111 Coupe

Views: 1,467

Posted By Tomguy

A/C O-rings are not rated for fuel, you'll need...

A/C O-rings are not rated for fuel, you'll need the proper kit with the ring.

As for calipers, I am sure an eBay dismantler has a 4.5 caliper. Or the original 111 style caliper. Buy whichever one...

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