![]() | Home > Technical > Defender wiper sweep |
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Lightningtweeds Member Since: 16 May 2017 Location: Fintry Posts: 461 ![]() ![]() ![]() |
1960's design engineered into a modern day icon.
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zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720 ![]() ![]() ![]() |
I did mention that a few posts ago.... If you're pulling the motor out, just get two new wheel boxes and a rack too, because it's not much more work or expense to replace those at the same time. |
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jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8463 ![]() ![]() ![]() |
My 90, 88 vintage has excessive sweep all the time.
It appears the reviews owner replaced wheel boxes. They look new and lots of stuff was done prior to my my.purchase, like new bulkhead so it would stand to reason wiper boxes were new. There is no slack between wiper arms or between both arms vs motor. Do I recall there being a different motor gear setup and that fitting the wrong gearing gives wrong sweep, Cheers James 110 2010 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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MarkBrown Member Since: 03 Oct 2022 Location: Mid Wales Posts: 595 ![]() ![]() ![]() |
Post removed- incorrect. 1983 110 automatic OM606
Last edited by MarkBrown on 9th Oct 2025 11:04am. Edited 1 time in total |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 18009 ![]() ![]() ![]() |
Tooth count on the motor gear won't affect the sweep of the wipers, just the speed. The only things that will affect the sweep are the diameter (tooth count) of the wheel-box gears and the offset of the crank on the motor gear.
I think that the wheel-box gear size did change at some point (it's mentioned in some thread or other on the subject) so using non-standard wheel-boxes might affect the sweep. Similarly using a non-standard motor gear (i.e., one with a different crank-offset than expected for the wheel-boxes) will alter the sweep. Over the years for different applications there has been a great variety of crank offsets used in what is essentially the same motor. |
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MarkBrown Member Since: 03 Oct 2022 Location: Mid Wales Posts: 595 ![]() ![]() ![]() |
Post removed- incorrect 1983 110 automatic OM606
Last edited by MarkBrown on 9th Oct 2025 11:05am. Edited 1 time in total |
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Retroanaconda Member Since: 04 Jan 2012 Location: Scotland Posts: 2784 ![]() ![]() |
The numbers on the gears refer to the sweep angle, not numbers of teeth. As above this is adjusted by the position of the crank on the gear.
The pre-2002 and 2002-on setups differ, you just need to match the motor gear to the wheelboxes. The motor itself is the same. |
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jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8463 ![]() ![]() ![]() |
Thanks you.
Well.they are def the older style spindles and hence I guess wheel boxes as have the grub screw fitment. So guess need to look at crank. Could be old style wheel boxes and newer motor with different crank position? Cheers James 110 2010 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8463 ![]() ![]() ![]() |
517646 - 115deg wiper motor crank and gear
DLW000020 - 140 deg version Cheers James 110 2010 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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