Member Since: 27 Aug 2015
Location: Colchester
Posts: 697
ZF Auo Metal Sump - Clean with a M6 Tap
My metal tray from Britpart arrived today, whilst checking contents I stumbled across the destructions and there is a BIG IMPORTANT NOTE: "the threads of the gearbox must be cleaned with an M6 tap in order to clean any corrosion or debris which may be in the whole as the new bolts have more thread engagement."
I've not found any reference to this act on this site. But don't feel it should be ignored!
1. Any advice on a tap set to buy and how to do carry out the procedure? - it's making me nervous already!
2. Although I can guess, what does "more thread engagement mean"?
Guessing here but if new bolts are longer then the never previously used threads in the holes could be full of crud..
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
I wouldn't bother buying a full set - just a good quality plug tap from a bolt supply or tool shopPete
1965 S2a with Galv Marslands Chassis - Sold (BIG mistake)
1993 200TDi GS Green 5 Seat Manual - Broken
1993 200TDi GS Grey 7 Seat manual - Sold To Defender Owner to Use Engine
1999 TD5 GS Blenheim Silver 5 Seat Manual - Broken
1999 TD5 GS Oxford Blue 7 Seat Auto - Sold
1999 TD5 ES Epsom Green 6 Seat Auto - Sold
2007 D3 2.7 TDV6 XS Java Black 7 Seat Auto
1999 Swift Classic Coronette
2019 BMW X1 AWD Auto - SWMBO's Car
IID Tool BT
3rd Jan 2018 9:32 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
that's how I read it.
As metal sump bolts are different.
I would be far more worried about getting the old bolts out without them breaking off.
You need to apply WD40 (or similar product) to the top of the thread holes on the exhaust side, before attempting removal
Do all that side, let um soak a little.
P.S As for instructions, you could always use one of the old bolts to clean the thread (once out of the filter housing
PPS Now that you mention it, I think I did use a tap I had to hand to clean on the thread holes on the exhaust side, as they had crud in um.
Last edited by Pete K on 3rd Jan 2018 9:38 pm. Edited 1 time in total
3rd Jan 2018 9:33 pm
trailhound
Member Since: 27 Aug 2015
Location: Colchester
Posts: 697
Good to know.
Any tips on using a tap to "clean" rather than gouge and bu gger?
3rd Jan 2018 9:38 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
the important things with taps are to you ensure they en-gauge correctly into the thread.
other wise you will do more damage.
So if its feeling ok to start then that is good.
If it becomes tight, back off a bit, and if necessary clean it.
And if in doubt stop. The last thing you want is a broken tap in the hole
it'll wind in easy in the part where the old bolts were then as it gets to dirty threads you'll feel it tighten - once there just go a quarter turn at a time then back it out half a turn (don't forget to oil the tap first) once deep enough wind it out and clean any swarf/muck out and you're done Pete
1965 S2a with Galv Marslands Chassis - Sold (BIG mistake)
1993 200TDi GS Green 5 Seat Manual - Broken
1993 200TDi GS Grey 7 Seat manual - Sold To Defender Owner to Use Engine
1999 TD5 GS Blenheim Silver 5 Seat Manual - Broken
1999 TD5 GS Oxford Blue 7 Seat Auto - Sold
1999 TD5 ES Epsom Green 6 Seat Auto - Sold
2007 D3 2.7 TDV6 XS Java Black 7 Seat Auto
1999 Swift Classic Coronette
2019 BMW X1 AWD Auto - SWMBO's Car
IID Tool BT
3rd Jan 2018 9:45 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
and avoid getting any of the swarf into the gearbox.
3rd Jan 2018 9:48 pm
trailhound
Member Since: 27 Aug 2015
Location: Colchester
Posts: 697
200TDi wrote:
I wouldn't bother buying a full set - just a good quality plug tap from a bolt supply or tool shop
If I do this what do I use to turn the tap without a handle?
I wouldn't bother buying a full set - just a good quality plug tap from a bolt supply or tool shop
If I do this what do I use to turn the tap without a handle?
for cleaning out threads where you can start it with your fingers rather than cutting new threads a small 1/4" drive socket with a small extension is more than adequate (M4/M5 ish) - you'll more than likely not have room for a full tap wrench anyway.Pete
1965 S2a with Galv Marslands Chassis - Sold (BIG mistake)
1993 200TDi GS Green 5 Seat Manual - Broken
1993 200TDi GS Grey 7 Seat manual - Sold To Defender Owner to Use Engine
1999 TD5 GS Blenheim Silver 5 Seat Manual - Broken
1999 TD5 GS Oxford Blue 7 Seat Auto - Sold
1999 TD5 ES Epsom Green 6 Seat Auto - Sold
2007 D3 2.7 TDV6 XS Java Black 7 Seat Auto
1999 Swift Classic Coronette
2019 BMW X1 AWD Auto - SWMBO's Car
IID Tool BT
4th Jan 2018 9:41 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8101
Take one of the old studs and an hacksaw, put 4 cuts down the threads and voila you have a home made tap that a socket will fit onto good enough to clean the threads It can when others can't,
It will when others won't,
It goes where others don't.
4th Jan 2018 9:57 am
Tripe
Member Since: 28 Jun 2015
Location: Tasmania
Posts: 285
Sound like a waste of time
I just removed old Torx screws and put new bolts in.
I would spend the time, worrying about the correct tightening sequence and correct torque settings
4th Jan 2018 10:35 am
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
I would suggest using a metric thread repair kit instead of a tap, which if used incorrectly will cut new threads. The repair kit will clean the threads.GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
4th Jan 2018 1:15 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
I think you can get TAPs / Dies which are thread cleaners.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
... All LED interiors lights, DRLs, Spare Wheel protector.
gger?
