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Thread: Wiper Motor (Early type DR2) Issue

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    Question Wiper Motor (Early type DR2) Issue

    When switched on, the wiper motor in my '63 Herald causes the wiper blades to move an inch or so and then revert back to the starting position. I have checked the brushes and cleaned up the commutator. Suggestions as to next steps to address this issue will be most appreciated.

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    Great Pumpkin TR3driver's Avatar
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    Re: Wiper Motor (Early type DR2) Issue

    I'd check the tubing at the first wheelbox next. It may have come loose. I assume you already inspected the connecting link and gears inside the motor for any obvious damage.
    Randall
    56 TR3 TS13571L once and future daily driver
    71 Stag LE1473L waiting engine rebuild
    71-72-73 Stag LE2013LBW waiting OD gearbox rebuild

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    Re: Wiper Motor (Early type DR2) Issue

    I'm more familiar with DR3 motors, where the 'park' mechanism is in the dome, which has to be positioned at a certain spot for proper function. I think Heralds used DR3A motors, so maybe DR2 park wiring does not work correctly with the early DR2.

    Jeff

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    Re: Wiper Motor (Early type DR2) Issue

    According to the Lucas Overseas Technical Correspondence Course, the DR2 park works much the same as the DR3A. The main point is that all it does is keep the motor running for a time after the switch is turned off. It doesn't change how far the blades move.
    Randall
    56 TR3 TS13571L once and future daily driver
    71 Stag LE1473L waiting engine rebuild
    71-72-73 Stag LE2013LBW waiting OD gearbox rebuild

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    Re: Wiper Motor (Early type DR2) Issue

    I agree with Randall. Since they actually move both directions, I think your motor is rotating, but the outer cable is not holding the motion "in". Either the clamp on the motor drive section or the first wheelhouse is loose.
    John

    1955 TR2

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    Re: Wiper Motor (Early type DR2) Issue

    I'm with the others in that I agree it "sounds" as if your motor is functioning. Movement aside, does the motor shut off as expected?

    I'd try removing the blades and see if that has any effect on how and how far the spindles move; also watch for any movement of the outer cable itself. You might even want to tuck yourself down in one of the footwells in such as way as you can try to see at least one of the wheelboxes on that side. I'd not be surprised if something has loosened up somewhere along the cable routing causing slipping or just lack of full-time total engagement. It also could be that there is a great deal of wear on the gears on both wheelboxes or even the cable itself, but that seems highly unlikely.
    -- Andrew (Andy) Mace, VTR's Triumph 10/Herald/Sports 6 vehicle consultant and keeper of the North American Triumph Sports 6 and Herald Database

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    Re: Wiper Motor (Early type DR2) Issue

    Andy,
    Thanks again for the response. Once the weather here turns a bit warmer, I hope to get back to the wiper motor issue. That said, can you suggest where to find replacement wiper blades for the Herald? Thanks

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    Re: Wiper Motor (Early type DR2) Issue

    Quote Originally Posted by Herald63nut View Post
    Andy,
    Thanks again for the response. Once the weather here turns a bit warmer, I hope to get back to the wiper motor issue. That said, can you suggest where to find replacement wiper blades for the Herald? Thanks
    I haven't had to replace any blades in several years. But the last time I did, I went to NAPA; they had very appropriate looking blades "on the rack"; they might have been some sort of "classic line" or similar? But they were right there, in 11" and / or 12" size and "correct" bright stainless (not plastic or flat black as so many modern blades are).
    -- Andrew (Andy) Mace, VTR's Triumph 10/Herald/Sports 6 vehicle consultant and keeper of the North American Triumph Sports 6 and Herald Database

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    Herald63nut  (02-01-2019)

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