RogerH Posted June 5, 2022 Report Share Posted June 5, 2022 Hi Folks, I tried to be helpful on another forum regarding the TR4 and TR4A wiper motor numbering. I thought that the TR4 was a DR3A And the TR4A motor was a DR3 This caused an issue as a member has them the other way round. Moss agree with my numbering but one comment came back that Moss are not always right - Hmmmm. The more I look the more confusing it all gets. One MG site gives them back to front as do other supposedly good sites. Is there a reliable listing anywhere that gives some good info. There is also a 77xxx number that may give the answer Roger Quote Link to post Share on other sites
Grahamgl Posted June 5, 2022 Report Share Posted June 5, 2022 Hi Roger, Wouldn’t AlanT know the answer? Graham Quote Link to post Share on other sites
stuart Posted June 5, 2022 Report Share Posted June 5, 2022 31 minutes ago, Grahamgl said: Hi Roger, Wouldn’t AlanT know the answer? Graham He would but along with a lot of other very knowledgeable folk he doesnt post here anymore. Stuart Quote Link to post Share on other sites
RAHTR4 Posted June 5, 2022 Report Share Posted June 5, 2022 During the production the Sidescreen cars a variation of Wiper Motor were fitted : Models CRT, DR1, DR2 and DR3. Additionally a number of the last TR3A's were fitted with DR3A wiper motors. However, all TR4's and TR4A's were fitted with DR3A wiper motors. Some years ago Ian Gibson wrote a very detailed article in TRaction which relates the entire history of Wiper Motors. I have attached a copy of the article for your information. Regards, Richard TRaction - Ian Gibson Article on wiper motors.PDF Quote Link to post Share on other sites
boxofbits Posted June 6, 2022 Report Share Posted June 6, 2022 Hi Roger My TR4a is definitely a DR3a, however I found there are single speed and two speed versions of the DR3a. Mine is the latter. Easy to get confushed! Kevin Quote Link to post Share on other sites
RogerH Posted June 6, 2022 Author Report Share Posted June 6, 2022 (edited) Thanks Richard, I shall have a good read of that. PS -having read the article ,it doesn't rally give the answer that I wanted. I think basically it is all a mish mash created by TRiumph to give everybody some fun in sorting out Hi Kevin, it is becoming apparent that it is the five digit code 75xxx that tells the full story. Roger Edited June 6, 2022 by RogerH Quote Link to post Share on other sites
RAHTR4 Posted June 6, 2022 Report Share Posted June 6, 2022 Hi Roger, This sounds interesting...? What is your exact query..? I have taken the information from the article and compiled a list of wiper motors used, including gear sweeps, etc. I have all the period Lucas Spare Part Catalogues 1953 to 1972 which contain much detailed information such as, brushes, shaft & gear, armatures, coils, parking switches, plus photos. Regards, Richard Quote Link to post Share on other sites
RogerH Posted June 6, 2022 Author Report Share Posted June 6, 2022 Hi Richard, Yesterday I replied to a post on the TRiumph Experience forum. As well as helping with a couple of technical wiper motor concerns I also stated (idiot that I am) that the DR3 motor was for the TR4A and the DR3A was for the TR4. Clearly this is not true - but that is what I was lead to believe a long time ago. Immediately, if not quicker, somebody questioned my sanity. I backed it up with the info on the Moss WebCat. That was quickly put to bed stating that Moss have been known to be wrong !!!!! Surely not. I started to look at the five digit numbering (75xxx) to see if that clarified things- it may do but i could not find enough info to support it. So, I suppose my question is - is there any sense to the numbering that Lucas/ST put on their wiper motors. Roger Quote Link to post Share on other sites
Charlie D Posted June 6, 2022 Report Share Posted June 6, 2022 Roger, This is the sort of thing you need, but a more up to date version: http://mgaguru.com/mgtech/books/pdf/L400e_sr.pdf (I think this is what Richard has, but going up to 1972) Must be out there on the web somewhere. Charlie Quote Link to post Share on other sites
Charlie D Posted June 6, 2022 Report Share Posted June 6, 2022 Just found these later versions. http://tr4a.weebly.com/uploads/2/1/9/8/21980360/cce9062_1962.pdf http://www.waghornswood.net.nz/Manuals_01_18/Vehicles/Triumph/Lucas/lucas_1965_standard_triumph_leyland_quality_equipment_and_spare_parts_catalogue.pdf Charlie Quote Link to post Share on other sites
RogerH Posted June 6, 2022 Author Report Share Posted June 6, 2022 Hi Charlie, I had also just been reading those. Interesting but nothing for TR4A. They clearly show DR3A with the 75xxx code but not much help otherwise. I think I will just put it down to ST chaos. Roger Quote Link to post Share on other sites
RAHTR4 Posted June 6, 2022 Report Share Posted June 6, 2022 Hi Roger, The part numbering is just a Lucas system which had sense and organisation which they understood. The link to the "400e" publication is only part of the information as it has no information for car or model. The other two are for years 1962 and 1965 and so pre-date the TR4A thus have no TR4A information. The information is quite simple for the TR4A as they were only fitted with one type of wiper motor : TR4A – 1966 Standard fitment – DR3A 75568A – two speed (shaft & gear 54714897, 120 degree sweep) Regards, Richard Quote Link to post Share on other sites
RogerH Posted June 6, 2022 Author Report Share Posted June 6, 2022 Thanks Richard, I suppose at the end of the day if you need a motor you will know what it does and take it from there. Roger Quote Link to post Share on other sites
RAHTR4 Posted June 6, 2022 Report Share Posted June 6, 2022 Hi Roger, Wiper motors are easy to alter providing parts are available. If you want any wiper motor identified I may well be able to help, to search I just need the Model and part numbers. Regards, Richard Quote Link to post Share on other sites
tim hunt Posted June 7, 2022 Report Share Posted June 7, 2022 The 1967 Lucas catalogue of equipment and service parts CCE 902/67 lists five variants of the DR3A motor, but is coy as to whether these are single or twin speed. They are: 75446A/D fitted to all Herald variants, 75446A fitted to the Vitesse 2 litre saloon and convertible, 75607B fitted to the GT6, 75568A fitted to the TR4A, 75528A fitted to Spitfire Marks II and III and 75457A fitted to the Leyland 15 van and pick - up truck (petrol) and 20 van and pick-up truck (petrol and OE138 diesel. The 2000 saloona mnd estate were fitted with a model 6W motor, a very different design and a DL2 wss fitted to the Leyland '90' (Home) AND 2 Tonne (Export) (OE160 engine) The original wiper motor on my 4A is marked DR3A 54071382 and is twin speed. 12V 4 66 75568A Tim Quote Link to post Share on other sites
Les Millington Posted June 8, 2022 Report Share Posted June 8, 2022 Intriguing thread. I've now found out that I have a Herald wiper motor in my 1966 TR4A! DR3A 75446D. Only seems to have single speed, quite quick, with no self park. Probably the original 3 position pull switch on the dash for a 2 speed motor. Quote Link to post Share on other sites
RogerH Posted June 8, 2022 Author Report Share Posted June 8, 2022 Hi Les, what do the connections on the back plate look like - are they fly leads or fixed female spades. Fly leads would suspect two speed Spade fittings single speed. But then looking at the chaotic numbering it could be a 9 speed with derailleur gears. Roger Quote Link to post Share on other sites
boxofbits Posted June 8, 2022 Report Share Posted June 8, 2022 4 hours ago, Les Millington said: Intriguing thread. I've now found out that I have a Herald wiper motor in my 1966 TR4A! DR3A 75446D. Only seems to have single speed, quite quick, with no self park. Probably the original 3 position pull switch on the dash for a 2 speed motor. Hi Les Yes all TR4a’s as far as I know have a two speed wiper switch. My DR3a has two speeds which seem to work only AFTER getting the wiring correct ( there is a separate thread on here somewhere with photos of the correct switch/ motor configuration. It previously worked on a single speed only until wired correctly so worth checking that. I’m not so sure about the non self park though. That could be a fault? Kevin Quote Link to post Share on other sites
BlueTR3A-5EKT Posted June 8, 2022 Report Share Posted June 8, 2022 5 hours ago, RogerH said: Hi Les, what do the connections on the back plate look like - are they fly leads or fixed female spades. Fly leads would suspect two speed Spade fittings single speed. But then looking at the chaotic numbering it could be a 9 speed with derailleur gears. Roger Fly leads instead of spades does not indicate 2 speed. Although a lot were. You need to add in reverse parking And the thermal cut out switch (usually a blue wire I think) Quote Link to post Share on other sites
Les Millington Posted June 8, 2022 Report Share Posted June 8, 2022 Just been out braving a hoard of midges to check thisThe connectors on the wiper motor itself are male spades with fixed female spades on the wires. The top terminal goes to earth nearby and it quite rusty so could that be the self park fault? Terminal 1 is red, 2 is green, but bear in mind the car has had a substantial rewire by the PO. There is a red wire across the the body of the driving part of the wiper mechanism. Quote Link to post Share on other sites
RogerH Posted June 8, 2022 Author Report Share Posted June 8, 2022 Hi Les That sounds like a single speed. The free red wire is the self park Green is probably 12V The RED could be Black/Green in another life http://www.advanceautowire.com/tr24a.pdf Roger Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.