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Browsing this Thread:   1 Anonymous Users





OGREInc
Hydraulic Clutch Master Cylinder Shim
#1
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What purpose do the (2) half shims between the clutch master cylinder and the firewall serve? No reference in the Tech Wiki or Ye Olde Shoppe Manual. Inquiring minds want to know...thanks!

Posted on: 2017/10/30 22:22
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'73 1200 coupe vintage racecar
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zigmondo
Re: Hydraulic Clutch Master Cylinder Shim
#2
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I would say its so the m/cyl piston comes all the way back to allow fluid back into the bore - if it doesnt your brakes eventually lockup - dont ask me how I know :)
dp

Posted on: 2017/10/31 1:45
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'79 B120 ute(TURBO EFI A15 + 60 ser.5spd )
'83 Clubman 7 ( TURBO EFI A15 + 63 ser.dog 5spd )
'73 KB110 Coupe Mild A15 5spd ( Quad carb revver soon)

keep it simple
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ddgonzal
Re: Hydraulic Clutch Master Cylinder Shim
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Factory Service Manual discusses this. RHD shoppe manuals do not

Yes, they are adjustment shims, so the fluid doesn't back up. Unlike B210, B110 doesn't have an adjustable pushrod, so the master cylinder is moved via the shims. See Hydraulic Clucth Adjustment in our tech wiki
Quote:
Pedal stroke is 5.65 in (143.5 mm) with the adjustment stop (the switch in the diagram) backed off. Adjustment is made with shims for the cylinder on the firewall.

FSM diagram
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Adusting Shim
* 30611-27260 1.6 mm
* 30612-27260 0.8 mm
* 30613-27260 0.5 mm

Posted on: 2017/10/31 3:58
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OGREInc
Re: Hydraulic Clutch Master Cylinder Shim
#4
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Thanks, gentlemen. I suppose I should rummage through my Ziplock bag of shims and install an appropriate set then, eh?

Posted on: 2017/11/4 6:36
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