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excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 6038

1999 Defender 110 Td5 SW Caledonian Blue

Wiper upgrade ?

As I have to remove parts of the dash, again....to fix the lower vent flaps. Now is the time to do wiper boxes etc. Question is, is there any mileage in upgrading to the later style wiper boxes that have a nut to hold the wiper arms on instead of the splined adapter held in place with a grub screw? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

30th Sep 2025 9:41am

markb110

Member Since: 22 May 2010
Location: Guildford
Posts: 2700

Go for the nut version, I had a Turbo Diesel 90 years again and lost a wiper arm on the M3 in a downpour.

The grub screw at the time always allowed to arm to move on the spindle and never really felt secure….disappearing altogether in a sea of truck spray proved that….

30th Sep 2025 12:17pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 6038

I too have lost wiper arms on the motorway. Now I carry spares, complete with a blade attached. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

30th Sep 2025 1:16pm

Nidge

Member Since: 27 Jan 2008
Location: Kildare Ireland
Posts: 831

2009 Defender 110 Puma 2.4 HCPU Cairns Blue

From memory I think the wiper hole needs modifying to take the newer wiper spindle.
Early Td5 has round hole in bulkhead, later has oval shape.

30th Sep 2025 6:25pm

Retroanaconda

Member Since: 04 Jan 2012
Location: Scotland
Posts: 2785

They are also a different size wheel to the earlier ones and so you will need to swap the drive wheel in the motor too, else the sweep angle will be wrong.

30th Sep 2025 7:42pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8469

2011 Defender 110 Puma 2.4 USW Stornoway Grey

markb110 wrote:
Go for the nut version, I had a Turbo Diesel 90 years

I keep my trucks for a while too, but never had one that long....

Cheers

James
110 2010 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

30th Sep 2025 10:34pm

Screbble

Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2347

2004 Defender 90 Td5 XS CSW Zambezi Silver

1st Oct 2025 6:48am

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 6038

Cheers all. Deffo something to think about...but.....I don't really fancy modifying the bulkhead to accept the later wiper boxes/shafts. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

1st Oct 2025 8:17am

julian

Member Since: 17 Feb 2017
Location: Devon
Posts: 204

1994 Defender 110 300 Tdi CSW Alpine White

If you look at the later td5 bulkhead, the pressing curves around the wiper holes, whilst the earlier td5 and 300tdi do not have this curve.

What's curious though is that none of the remanufactured bulkheads, regardless of spec, have this curve in the pressing. The profile of all of them just seems the same as the 300/early td5.

This makes me wonder if it is perfectly acceptable to drill out the earlier bulkhead to fit the wider shafts or not.

1st Oct 2025 10:23am

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