Diving Compressor Bristol 4s.7.40

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OP
Rik Lemmens

Rik Lemmens

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Hello, I'm new, I'm not a diver, but I'm not a paintball shooter either. I searched and found a high-pressure compressor, I collect historical combustion engines. One of these engines is a very early Diesel Engine, it needs 80 Bar of compressed air to blow in the fuel, which is why I purchased the diving compressor. It's an old Bristol 4S.7.40, an engineering marvel, I would like to treat this well, and above all not do anything wrong. The engine has a three-stage compressor, but I'm going to use that extra compressor as a backup Now comes my question: is there anyone who can help me with a manual for this compressor? Thank you in advance and best regards from the Netherlands Rik
 

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I have a Bristol 4S-7-40. Recently the oil cap has broken its threads. I was able to get the remainder out and now the cap just catches and holds on one thread, but I would like to replace with a new one. Are these still available or someone might have a second hand one lying about. Also, on the cap it says "FILL TO TOP" and unsure exactly where TOP is. Thanks
Bruce
 

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The oil must be up to the bottom of the thread.I fill til i cant get any more in,right up to the top.
Yes i have spare filler caps but i am not back to my workshop till september.
If you go to your local hydraulic shop they can get you a blank its BSP thread [think it 1"]
You must NOT use a vented blanking cap.
 
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windyairman:
The oil must be up to the bottom of the thread.I fill til i cant get any more in,right up to the top.
Yes i have spare filler caps but i am not back to my workshop till september.
If you go to your local hydraulic shop they can get you a blank its BSP thread [think it 1"]
You must NOT use a vented blanking cap.
Click to expand...
Hi
OK. Got it. In that case my compressor was running with low oil. I could see clear oil in the hole but definitely not to the top. Nice to hear that the cap is available but will try your suggestion in getting a blank/end plug now that I know the size and thread type locally. Thanks
 
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