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Old 11-19-2017, 09:29 AM   #1
1jfhj2
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Reservoir beside brake booster

Good morning. I ordered my new brake booster and master cylinder for my 69 C20 dually and while waiting I decided to spray everything I need to remove so it will come apart easier. Can anyone tell me what the extra reservoir is to the right of my brake booster. Unable to find any pics of other trucks with that in it. Thanks
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Old 11-19-2017, 10:04 AM   #2
Jcfcamaro
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Re: Reservoir beside brake booster

Hydraulic clutch?
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Old 11-19-2017, 10:09 AM   #3
1jfhj2
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Re: Reservoir beside brake booster

It is a 4 speed but I didn't think they had hydraulic clutch that early.
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Old 11-19-2017, 10:41 AM   #4
jocko
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Re: Reservoir beside brake booster

It's likely a slave cylinder for the clutch - not a hydraulic release bearing like they have today. Look where your clutch actuating lever connects to the bell housing and see if you have a push cylinder rather than mech linkage. They had this setup as early as 1960, it used to be part of the main master cylinder. But, this setup looks like an old single pot brake mc (which would work for the clutch) from 63-66 trucks (and cars) - have not seen one on a 69.
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Old 11-19-2017, 12:09 PM   #5
RodnRudy
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Re: Reservoir beside brake booster

Since there's no line coming out of the old single port MC the clutch linkage has probably been changed to mechanical?
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Old 11-19-2017, 01:09 PM   #6
geezer#99
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Re: Reservoir beside brake booster

It could be the master needed for a hydraulic trailer brake set up.
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Old 11-19-2017, 01:38 PM   #7
truckster
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Re: Reservoir beside brake booster

Quote:
Originally Posted by geezer#99 View Post
It could be the master needed for a hydraulic trailer brake set up.
Most likely answer. Look under the dash to see if there's a rod connecting this MC to the brake pedal.
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Old 11-19-2017, 09:44 PM   #8
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Re: Reservoir beside brake booster

might also be part of a big truck set up
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