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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG TD TF 1500 - Generator Front Plate

Anyone have one of these in a pile somewhere. Mine is broken at the top adjusting hole. I could weld it up and re-fabricate it, but I'd prefer finding a junk one in good condition. I hate to buy a complete rebuild able generator and disassemble it just for the front plate, but, if that's the last straw, I'll do it. I was told an early "B" generator plate is the same. PJ




P.S. Jennings

Mine are "pot metal" can you weld pot metal??
Very Curious,
Bob
Bob Jeffers

Bob, I am not positive, but I think using a TIG machine it's possible. If I had to, I would definitely would try it. PJ
P.S. Jennings

PJ - Go to the MG auction watch a: http://www.mgauctionwatch.com/auctions.php?model=General click on Lucas Parts, then on Dynamos and peruse the listings in England, they often have end covers listed. Just make sure that they will ship to the US before bidding. I got an end plate some time ago for around $30 including shipping. Cheers - Dave
David DuBois

May have a useable one, PJ. Will check tomorrow when I get to the shop. Dan
Dan Craig

Thanks Dan, much appreciated. PJ
P.S. Jennings

Hi all,

Re Bob Jeffers query, 'pot metal' can be fixed with the 'Lumiweld' system, but unlike aluminium it needs supporting during the process to avoid collapse. I've used 'Lumiweld' successfully on aluminium several times, but not on 'pot metal' which can be tricky, due to the uncertainty of the original mix!

As I said before on another thread, filling a broken hole and redrilling an aluminium dynamo bracket is doable, and should be done as a spare even if an unbroken one is obtained.

Good luck PSJ in sorting your problem.

Cheers

John
J C Mitchell

GOT ONE! Thanks to a gentleman in Missouri I now have an exact duplicate of my front plate, but in much better shape. Even has a new bushing in the lower bolt hole, which was worn. When taking the generator apart, I found a new armature,(Lucas), new brushes and new bearings! It looks like it was rebuilt years ago and put on the shelf. The brushes and armature show absolutely no wear. Great! PJ
P.S. Jennings

While rebuilding my generator, I noticed in the shop manual, which leans heavily on the TD series as far as illustrations goes, shows the generator as the type with the band covering the brushes, but mine has none, it's solid. Any input on this? PJ




P.S. Jennings

PJ What is the service Part No. (like 22258x)?
Cheers,
Bob
Bob Jeffers

Bob, I'll get back to you on that. I have to go to the shop to get those numbers. PJ
P.S. Jennings

PJ,

As I'm sure you're aware dating is part of the No. on Lucas equipment. You may have a later midget dynamo, which also had a rev counter drive. Previous owners in the 50s/60s often weren't bothered about exact originality, when offered later dynamos in service exchange.

Interested in your nos. and dating,

Cheers

John
J C Mitchell

The numbers are; 22258E 9 56 and under those is this set; C39P V2. This generator is definitely going to stay on there for now, but I would like to have the right numbers for the future. PJ
P.S. Jennings

PSJ The 22258E service P/N says that generator is from an early TD. Rated output is 17 Amps. Now the E part may be the variation with no holes and hence no wrap around sleeve. Altho I thought it wasn't until MGB's that the generator came with no sleeve and had two different outside diameters. My Lucas parts book lists the 22258 number but doesn't have the E letter listed. Probably because the date is 9 56. My book stops at around late 1955 early 1956.

Guess I wasn't much help.
Sincerely,
Bob
Bob Jeffers

Bob - I'll have to check the number on the generator in our TD, but it too has no brush inspection holes in it. I'll send you the numbers (just for information) as soon as I get them. By the way, this is not a Midget generator, as those have spade lug connections. Cheers - Dave
David DuBois

According to my (repro) Lucas catalogue, the TD/TF generator is 22744, the same as the Spridget.

Am I missing something here?

Gord Clark
Rockburn, Qué.
Gordon A Clark

Gordon - What's the date on that catalog? Could it be that it came out after the TD/TF generators became obsolete? Cheers - Dave
David DuBois

From real Lucas Master Catalogue, c Oct 1963:

MG Midget
Part numbers originally fitted:
46-49 22452A C45YV3 superseded to: book error, not in supersession list; can't tell if the number is wrong, or the supersession notation or list.
50-52 22257A "special" finish; superseded to: 22265
Later 52-55 22265A/B "standard" finish

All of these have cover bands for yoke windows.
No clue what "special" finish means!

Letter suffixes indicate internal changes which may affect parts to repair.

Model numbers:
C = concentrically mounted armature
45, 39 etc. = diameter of yoke (case) 4.5", 3.9"
(ins/tenths all except 418 which is 4 1/8"!)
P = voltage control (uses regulator), 2 pole, long yoke
Y = """""""""""""""""""""""""""""""""""short type yoke
V = ventilated (airflow through ends)
2, 3 = ?? usually these are minor differences as the part number suffixes are.

Many of the parts in same basic model (IE, C39) Lucas generators are interchangeable, so if your case (yoke) is marked with other numbers it means little, but it is not OE. 22258x is MGA and a bunch of other stuff, but if the tach drive armature and endplate are used it is really a "sort of" 22265. Rebuilders and Lucas proper both supplied replacements with whatever was on hand, and generally following current production. At least at some times Lucas went nutso on changing part numbers - in the late 60's/early 70's we would get new price lists with thousands of number changes, only to get a new one a month later changing those numbers to new ones. Further, Lucas supplied nothing to help you through the maze, after a few months the supersessions were no longer listed in subsequent lists. I used to have many of these, but don't know where anymore.

FRM

FR Millmore

Dave,

My catalogue, a repro, is by JD 680 Enterprises - entitled "Lucas Equipment for 1948-62 cars" - reprint of 8/75.


I know of only one original Lucas book, and the owner won't let me take it out of his shop, so I can amke a copy.

Gord Clark
Rockburn, Que.
Gordon A Clark

Gord -
Here's an odd story.
My book "Lucas Master Catalogue", is 1946-1960, numbered as 400E on the spine printing. There is no date actually in it; I used the "errata" page for a date of Oct 1963 since it is the only thing dated.
Along about 1972 I attended an ACOC meet and encountered a fellow Aceca owner, Geoffrey Griffiths, the then head of Lucas parts in N America, which was in Baltimore. I mentioned that I had looked up part numbers in this book, and he replied "That book is a very bad thing to have out there. I will supply you with a bound set of all current Lucas catalogues in return for that." I turned him down, but it might tell you why it is difficult to find these! I subsequently attempted to obtain a similar book for 60-up, but by then there was evidently no such available.

FRM
FR Millmore

But then I just found this, from Barney Gaylord:

http://mgaguru.com/mgtech/books/books_4.htm

about 4 down.

FRM
FR Millmore

Could it be that the "E" in the partnr. stands for "Exchange"? That might explain the mix of parts?
For me such "period" mix-ups add to the charm of an old car.
Willem vd Veer

Hi PJ,

A lot of really useful and detailed info from FRM,some of which ties in with what I said before viz. Lucas replacements/exchanges would have been based on current production. Your C39 PV2 dynamo was made in September 1956 (or at least the yoke was!), and is the correct model for the TF, except that by that time only windowless yokes were being made, used on MGAs and many other makes. To make it look more 'original', see if you get hold of a band (sleeve) and put it round your current yoke, to get the 'correct' look.

You can then look out for a C39 PV2 open yoke and band, and even if the field coils are shot, these can then be replaced/rewound by a specialist. I'm quite a stickler for 'originality', but items like dynamos and starters were changed quite a lot over the years. My own TF was made in November 54, but the C39 PV2 open yoke dynamo was made in February 55 - the correct original model, wrong date! If anyone ever notices this (no one yet has!) I'd say the original failed, and the dynamo was replaced under guarantee! In fact I replaced the C40 dynamo myself, a few years back with the best dated C39 dynamo I could find!

Keep looking PJ - you will find a C39 open yoke dynamo, but the date might still be 'wrong'!

Cheers

John

J C Mitchell

This thread was discussed between 09/11/2010 and 21/11/2010

MG TD TF 1500 index

This thread is from the archive. The Live MG TD TF 1500 BBS is active now.