131 brake diaphrams

[Rob Reznik]

need a bit of help - I'm over in the Ukraine buying some parts and one of the things I am looking for are the brake diaphrams - there are however 4 different types - could anyone with a 131 have a look at the air chambers and let me know whether they are bolted together ( and if so how many bolts ) or whether they have a bracket holding them together with two bolts - could also do with approx diameter as there are also two sizes and to be really cheeky need the info for tomorrow evening

[ZILTASTIC]

Rob on mine i've got 12 bolts and they are 180 mm / 7 inch in diameter. Hope this helps.

Wayne

[Abrs]

Just to add confusion - I have two spares left over from when I did mine:





As you can see these are 170mm, they fit both my 1972 & 1980 Zils, so maybe it's earlier or later trucks than this that are different?


Regards

[ZILTASTIC]

Having looked at the pictures John's put i would say mine are the same . . .

[Rob Reznik]

thanks for the info - yes it looks like the later 131's have the two bolt bracket clamps which will mean they have different diaphrams - anyone asking for these spare parts needs to know which ones they have.