TR4 & TR4A Forum
Replace Fuel Pump
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This topic is about my
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 Redding, CA, USA
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Sep 21, 2022 02:09 PM
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 Joined 9 years ago
3,122 Posts
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None of the black rubber hose I had was suitable for slipping over the ferrule, so I used some clear tubing I had, long enough to reach above the level in the tank.
I got the pump off and I think I see why it stopped working. The stamped projections on the operating rod that engage the lever have bent off. The photo isn't well focused. I have a new pump on the way and intend to order a rebuild kit to have on hand for the future. Not much help at roadside, but I'll get back on the road sooner than searching for in-stock pumps.
One bonus from this is that I figured out what the shortened 1/4" drive 1/2" socket in my toolbox was for. I made it a few years ago for removing the rear nut on the pump flange, then forgot why I modified the socket.
I got the pump off and I think I see why it stopped working. The stamped projections on the operating rod that engage the lever have bent off. The photo isn't well focused. I have a new pump on the way and intend to order a rebuild kit to have on hand for the future. Not much help at roadside, but I'll get back on the road sooner than searching for in-stock pumps.
One bonus from this is that I figured out what the shortened 1/4" drive 1/2" socket in my toolbox was for. I made it a few years ago for removing the rear nut on the pump flange, then forgot why I modified the socket.
Attachments:
Fuel Line Plug.jpeg 72.2 KB
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Stuttgart, Germany
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Sep 26, 2022 12:22 AM
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Joined 3 years ago
749 Posts
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The change the pump easily I put a fuel tap in the hose in front of the fuel pump.
And to get the rear nut off easily I fitted a special long 1/2“ hex bar with thread inside.
Edited 2 time(s). Last edit at 2022-09-26 12:59 AM by Z320.
And to get the rear nut off easily I fitted a special long 1/2“ hex bar with thread inside.
Edited 2 time(s). Last edit at 2022-09-26 12:59 AM by Z320.
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Sep 26, 2022 08:13 AM
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Joined 14 years ago
17,543 Posts
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If you do not want to install a cut-off valve then at least keep a couple of "hose pinchers" in the boot...
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ZS carb repairs
kencorsaw@aol.com
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ZS carb repairs
kencorsaw@aol.com
Attachments:
Cut off.JPG 57.4 KB
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Stuttgart, Germany
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Sep 26, 2022 02:21 PM
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Joined 3 years ago
749 Posts
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In reply to # 1923059 by ducbsa
Nice, but think of the lost concours points!
Well stated, guy with the nameless fuel pump with cross-head screws
Do I understand you correctly (on your photo there in nothing to see):
on your repro pump the two clips moved out, which are holding the pump's shaft in the pump housing?
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In reply to # 1923143 by Z320
Well stated, guy with the nameless fuel pump with cross-head screws I knew I should have blurred those screws!
Do I understand you correctly (on your photo there in nothing to see):
on your repro pump the two clips moved out, which are holding the pump's shaft in the pump housing?
This is what the diaphragm shaft should look like and on mine the ears are bent away and no longer were hooked on the operating lever.
In reply to # 1923059 by ducbsa
Nice, but think of the lost concours points!
Well stated, guy with the nameless fuel pump with cross-head screws
I knew I should have blurred those screws!
Do I understand you correctly (on your photo there in nothing to see):
on your repro pump the two clips moved out, which are holding the pump's shaft in the pump housing?
This is what the diaphragm shaft should look like and on mine the ears are bent away and no longer were hooked on the operating lever.
Attachments:
Shaft End.jpg 7.3 KB
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