tr7triumph.com

Just to continue the saga of my wipers.....

I have replaced the wheelboxes and the wiper motor now with little improvement.
Previously so e other contributors had suggested there may be some degradation in the wiring?
Has anyone actually addressed this version of the problem? And if so what did you do.
My stalling problem occurs irrespective of the wiper mode chosen - is there a 'common' power feed to the wiper motor i could check? If so what readings should i be looking for?

Any help gratefully received !!!!

Brian

That was my theory on the degradation of the wiring loom Brian. Whether it's fully correct or not I haven't put to the test yet as my wipers are working okay lately. However, it can't be beyond the wit of man to bypass the loom and run a new feed from the stalk switch on the steering column to the motor. However, maybe it's possible you need a new stalk switch. Others will be able to advise if this is likely... John Lucas, what do you think?

As you've changed the motor I don't suppose there's any chance the motor is held in loosely. For those that don't know it has to be held firmly in place, particularly the nut holding the rack to the motor. If that ones loose all manner of strange things can go on.

Make sure all connections in the circuit are free of corrosion including any grounds. If the motor doesn't get full 12V because of resistance in the line it won't be effective. This includes any of the muti strand wires that might have broken at a connector. I do have a new wiper switch/hi beam module installed (old one mechanically broken). My wipers are perky. I haven't/don't use the wipers on a dry windshield as I don't want dry wipers with any sand/dirt collected running across my windshield. It's bad enough into the sun with the tiny sand blown marks from when it lived in the desert.

Gonna have to tackle mine soon as well, as last time out in a storm, they just got slower and slower and slower, despite plenty of H2O falling down on the screen.This will be the umpteenth time I have had this motor out, but does anyone know, if you disconnect the motor, unbolt it from the car, and undo the nut that holds the rod housing on to the motor, does the serated rod/drive and whole motor assembly withdraw by pulling it out (if I remove the wiper arms and blades) from the wheelboxes for cleaning and greasing - then perhaps it can just slide back in ??

Hope this made sense.

The drive rod separates from the motor. I removed the assembly as a whole (after separating from the motor). It's not that hard and gives you a chance to replace the wheel box gaskets if they are worn out. I made some up with neoprene. There are firewall blanking plates to remove to help. There are conduits separating the wheel boxes (label everything as to which way they go), The drive rod is a continuous toothed rod. On the motor end of it is the parking switch actuator. Be careful with it. It is copper and somewhat fragile. I would tie a baggie around it to protect it when it's out from catching anything and cracking/breaking like I did with mine. The only adjustment that I recall is the parking switch position which has to be correct to park the wipers.

littlepippin wrote:does the serated rod/drive and whole motor assembly withdraw by pulling it out (if I remove the wiper arms and blades) from the wheelboxes for cleaning and greasing - then perhaps it can just slide back in ??

Hope this made sense.

Yes it makes sense and yes you can do it this way, in fact I've just done it this way as the parking switch wasn't working. First I removed the battery and also the washer bottle to make enough room to work, but it is possible to get the motor off that way.

Now I just have to do it again as it's still not parking everytime

(this is the second time I've typed this, hopefully it will appear this time)

My original 35A alternator was having trouble driving the engine, radio & lights. Even after overhaul it could not handle the wipers too, with out slowly draining the battery. When I added in the new air conditioning it had no hope.

Would you believe that my rather useless wipers improved dramatically after I fitted a modern 90A alternator. Prior to that I did not realise that fitting an air conditioner would make it easier to see in the rain.

On that note, as a fighter pilot we were trained to see through wet windscreens, no wipers on them. The trick is to look "through" the screen. Focus as far ahead as you can see & the wet screen tends to disappear. Not so much of a problem at high speed, but on take off runs, it is pretty much like a car.

Try it some time on a country road, & you may be surprised.

Hasbeen

Much like riding a motorbike in the rain...... You have to look through the rain on the crash helmet's visor. It's even more fun at night as the drops light up from every light source around. Above 40 to 50mph, turning your head slightly to one side and then the other clears the visor but that's not much use around town.