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| | | | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | There is a tag on my booster that tells me the warranty is void if the check valve is removed. How would removing the check valve affect the booster and void the warranty? 
~Jim
| | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | Just a CYA. This way if you do anything at all to the unit its your fault not theirs if something goes wrong resulting in damage. The same reason so many places wont sell hydrovac and booster kits without an argument, that and the price tag... | | | | | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | Well I couldn't think of any harm to the booster to pull the check valve off. I wanted to take it to a shop to measure it to fit a new kind of fitting for it. If it works out it should be pretty nifty. I'll post pics if it does.
~Jim
| | | | | Joined: Jul 2007 Posts: 8 Apprentice | | Apprentice Joined: Jul 2007 Posts: 8 | I could be mistaken (and someone please correct me if I am) but I'm pretty sure that they don't mean not to take the check valve off the booster at all, they mean do not use the booster without a check valve.
Reason being is that the check valve not only helps to hold a solid vacuum inside the booster, it also protects the diaphragm inside the booster from damage should your engine backfire through the intake.
A backfire could pressurize the vacuum tube going to the booster and blowout the diaphragm. The company that sells the boosters just doesn't want to replace a bunch of them for free just because someone decided to bypass their safety feature.
Hope this helps.
Jeff
Some sound advice should you find yourself at the controls of an aircraft...
"Try to stay in the middle of the air. Do not go near the edges of it. The edges of the air can be recognized by the appearance of ground, buildings, sea, trees and interstellar space. It is much more difficult to fly there."
| | | | | Joined: Jan 2006 Posts: 586 Shop Shark | | Shop Shark Joined: Jan 2006 Posts: 586 | I agree with Jeff (Bad Luck) above. You should also have a filter in line to keep the fuel vapors from eating away at the diaphragm. Junk yards are full of them.
Wanted Good Woman:
Must be able to cook , clean , sew , tune engines and polish trucks. Must have old Stovebolt and garage. Please send picture of old Stovebolt and garage.
| | | | | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | A filter? What kind of filter? I've bent my stainless vacuum line from the intake down along side the bellhousing and a second line along the frame back to across from the booster. I was just going to use vacuum hose to connect between them. Now you say a filter? What is this filter called?
~Jim
| | | | | Joined: Jan 2006 Posts: 586 Shop Shark | | Shop Shark Joined: Jan 2006 Posts: 586 | It's a fuel vapor filter. You will see them on 1974-1985 GM cars and trucks. As I said,the junk yards are full of them.
Wanted Good Woman:
Must be able to cook , clean , sew , tune engines and polish trucks. Must have old Stovebolt and garage. Please send picture of old Stovebolt and garage.
| | | | | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | As I understand it, GM had a recall in the 80s from boosters going out from debris in them. I think I may pass on the filter.
~Jim
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