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MG TD TF 1500 - What kind of fuel pump is this?

This is my old pump that I recently replaced with a Facet pump when I changed to negative ground. It is quite old, because literally, they don’t make them like this anymore; heavy metal construction. No brand name. The stamped markings on the cylinder are ‘TOP,’ ‘IN’ and ‘OUT.’ On the left mount flange is stamped ‘POS’ and ‘12V.’ On the right mount flange are stamped the numbers 476 090. The power line is encased in green and black woven thread on the inside and rubber insulation on the outside. The wire is about 12-14 gauge. A five-eighths fixed bolt head on the bottom helps remove the bottom from the three peg latches, inside of which are two filters; the outside one is a mesh cylinder about seventh-eighths diameter by one and one-quarter inches tall. The outside of the cylinder is coarse mesh and inside traditional very fine mesh. The cylinder houses a cone filter that we used to call a ‘rock’ filter. The mounting flange has a heavy rubber backing that is probably original. It works quite well. I may put it back in use in conjunction in some manner with the Facet pump, but pretty sure that I will have to run power through the case and ground through the old power wire. Anyway, does anyone know which brand it is?
(I hope the picture comes through)

Regards,

Bobby L.



B. F. Loughridge

I saw one of these the other day, it came from NAPA.
D. Sander

Bobby, my TD's last pump back around 1970 was exactly like the one you posted. It was painted bright red and as yours did not have a name brand stamped on it. I also saw one just the other day at David Zyps in Cincinnati on an old parts car he had. I believe they were a pretty popular replacement back in the 60's and 70's but someone on the board said they put out too much preassure.
Richard Taylor TD3983

I've seen those under different labels. Mostly Bendix. Popular around here in the late 60's as a replacement pump for Ford tractors because of the positive ground. I put one on a Sprite once because I couldn't find a mechanical replacement. They run around 5 lbs which was too much for the Sprite floats. I had to put a regulator with it. I'd be leary of trying to reverse the polarity as they were designed to run as positive ground. Had one on the TD when I got it. I chucked it in the trash. Wouldn't put one on if it were me.


LED DOWNEY

That is a Facet pump, different model than the cube type Facet pumps. At 34 gph it is a bit of overkill for TDs and the output pressure is boarder line high (2.7 - 4 psi) unless it is mounted in the rear of the car as Laverne shows. If they ever came in positive ground version, they don't any longer. See http://www.facet-purolator.com/index.php?option=com_content&task=category§ionid=7&id=14&Itemid=36



David DuBois

Just did a little google search Dave. Now I see how they became Facet pumps.

It started in 1914 with the production of a automobile starter that became known as the Bendix Starter.The Bendix Starter received instant recognition and became the automotive industry standard.The company changed its name to Bendix in 1928.Following World War II, the company engineered and produced Stomberg carburetors, starter drives and electronic fuel pumps.In 1974, several Bendix divisions were sold and renamed Facet Enterprises.Facet was an acronym for Filters, Automotive Components and Environmental Technology.In 1987, as part of further expansion and diversification, Facet acquired Purolator Products Incorporated.Today, Facet is a leading manufacturer of original equipment and aftermarket automotive fuel delivery products. Features: - For use with engines ranging in size from 1 cylinder to 4 cyclinder


Also see the new ones come in varying pressure capacities.
LED DOWNEY

Ya just gotta love the net when it comes to research.
Richard Taylor TD3983

Thanks everybody for the great research. The previous owner of my TD bought it in 1957 and sometime in the late 1960s-early 1970s changed the engine to a B18, which is when the old pump was probably installed on the front of the tool box. It apparently has worked well for close to forty years. When I changed to the new Facet pump, the old pump emptied about seven gallons out of the tank in about 15-20 minutes (including stopping to change gas cans.) David; Moss Motors now claims in their installation instruction sheet that the new Facet pump can be either positive or negative ground, even though Facet lists it as negative only. I hooked up negative since I was installing an alternator. Again, terrific research; it surely is easier to get information now than when I last worked on cars!

Regards,

Bobby Loughridge
B. F. Loughridge

I have one styled just like it which was on my TD project. Definitely AFTERMARKET. Mine is marked Bendix Aviation. Looks like at least one application was an electric fuel pump for airplanes!
BRIAN WARMUTH

The Facet pumps are used a lot in small aircraft. As for the polarity of the pumps, the cube pumps and the newer Posi Flow pumps are both two lead devices, with the case isolated from the operating circuit. These pumps can be used with either polarity, just by hooking the wires up red to positive and black to negative. The High Performance pumps as pictured in Bobby's, Laverne's and my posts are all single lead devices, which means that the case of the pump is at ground potential and is therefore polarity sensitive. The only way that they can be used in a vehicle of opposite polarity is to isolate the case from ground - an extremely dangerous practice. Cheers - Dave
David DuBois

How does this pump work, and why is it polarity sensitive? Is it a solenoid or motor type? Most pre-solid state stuff works either way, though some motors will run backward.

FRM
FR Millmore

... almost sure that a Stewart-Warner pump. Bobby.

Had one on the old MF tractor.

Gord Clark
Rockburn, Qué.
Gordon A Clark

Gordon, you were pretty upscale with a fuel pump on a tractor...our '37 B John Deere and '50 model G (both bought new) had the kerosene tanks mounted above the engine; no pump needed as long as you stayed upright!

Bobby L.
B. F. Loughridge

Fletcher - All of the Facet pumps I have run across are solid state and have been for many years (they basically operate the same as the SU pumps only they use a piston instead of a diaphragm). I would guess that some of the every early pumps were points controlled, but all the ones that I have come across are solid state (with the circuit encapsulated in epoxy, therefore not repairable). Cheers - Dave
David DuBois

This thread was discussed between 25/08/2010 and 26/08/2010

MG TD TF 1500 index

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