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dhallworth

Member Since: 10 Oct 2011
Location: Glasgow
Posts: 3203

2012 Range Rover Autobiography TDV8 Baltic Blue

The seal kit for the gearbox arrived in the post yesterday and the solenoids from RRPhil arrived today so this evening I set to work.

I drained the oil out of the gearbox and whilst having a peek noticed that someone has been in there before. It’s easy to tell when they leave a bolt out!

Anyway, I stripped the valve block out and replaced the bridge seal, the 4 round tubes and then set about swapping out the EDS2 solenoid.

After that was done and the valve block was reinstalled I fitted the new electrical sleeve. The one I took out was date stamped 0112 so it’s obviously the original to the car.

The oil I drained out still looked brown when you shone a torch through it as it was draining but when in the bucket it looked awful and I couldn’t bring myself to put it back in so it’s filled with fresh oil tonight.

New oil v old oil.

I then took the car for a run and before I’d even got to the motorway it felt like a different gearbox. Once on the motorway it locked up perfectly and the revs were stable again.

Here’s what the IID tool is showing now.

I’m going to order a set of ZF solenoids and a genuine service kit for it and get them swapped over the Christmas holidays. I can then return Phil’s solenoid in case anyone else needs his help.

A massive thanks goes out to Phil for assisting with this. His help and knowledge have been a fantastic support.

2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior

8th Dec 2023 3:46am

Superspoons

Member Since: 24 Jun 2010
Location: East Hertfordshire, UK
Posts: 395

2006 Range Rover Vogue SE 4.2 SC V8 Zambezi Silver

Excellent news David - I've been following this as I'm going to service the gearbox on my SC next year when the weather warms up - allbeit the HP6.

Gary Ferraro has some great videos for instance, this on the HP6 - https://www.youtube.com/watch?v=KRcs67e6k8U&t=794s & https://youtu.be/7CnTQwKA7J4?si=eOBFS46hrjyp2Cd8 on a slip from 3rd to 4th.

Great help from Phil too - this is what forums are about, helping others with knowledge and parts/tools Gavin

2005 Range Rover Vogue SE 4.2 Supercharged V8

Follow my 4.2 Supercharged antics -
https://www.fullfatrr.com/forum/topic63354.html
https://www.instagram.com/l322_supercharged/
https://www.youtube.com/channel/UC8ChHNSdscnJarKjBLd_IAg
https://www.youtube.com/@ChallengingClassics

8th Dec 2023 11:06am

dhallworth

Member Since: 10 Oct 2011
Location: Glasgow
Posts: 3203

It’s a 6HP in this one too being the 5.0.

The 4.2 has the 6HP26 whereas the 5.0 has the 6HP28.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior

8th Dec 2023 11:18am

Superspoons

Member Since: 24 Jun 2010
Location: East Hertfordshire, UK
Posts: 395

Hi David,

Forgot to add the '26' at the end there- DOH , well spotted Gavin

2005 Range Rover Vogue SE 4.2 Supercharged V8

Follow my 4.2 Supercharged antics -
https://www.fullfatrr.com/forum/topic63354.html
https://www.instagram.com/l322_supercharged/
https://www.youtube.com/channel/UC8ChHNSdscnJarKjBLd_IAg
https://www.youtube.com/@ChallengingClassics

8th Dec 2023 11:29am

Haylands

Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8552

2014 Range Rover Autobiography SDV8 Loire Blue

Well done David, real happy you got to the bottom of it... Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

8th Dec 2023 11:37am

JayGee

Member Since: 27 Jul 2021
Location: London
Posts: 3283

2012 Range Rover Vogue 4.4 V8 Orkney Grey

2012 TDV8 Vogue (L322)

8th Dec 2023 11:42am

D3Jon

Member Since: 15 Aug 2020
Location: Lincolnshire
Posts: 519

Enjoyed reading this, great thread and an even better outcome 1992 RR Classic 3.9 efi Vogue
2014 Disco 4 HSE
===================
Both my fatties now gone...
Previous: 2011 L322 4.4 TDV8 Vogue SE /// 2002 L322 4.4 V8 HSE /// 2009 Discovery 3 2.7 TDV6 XS /// 2004 Defender 90 TD5 /// 1993 110 V8 Snatch Landrover /// 2005 Discovery 3 2.7 TDV6 SE (Aus) /// 1990 110 Isuzu 3.9 County (Aus) /// 1976 Series III Trayback (Aus)

8th Dec 2023 12:05pm

dhallworth

Member Since: 10 Oct 2011
Location: Glasgow
Posts: 3203

Full details posted over here:

https://www.fullfatrr.com/forum/post679788.html#679788

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior

8th Dec 2023 12:12pm

RRPhil

Member Since: 22 Aug 2011
Location: Blackburn, Lancashire
Posts: 1002

That’s great news, David

Not wishing to over-complicate things, but I thought it might be worthwhile me pointing out the following:

Each solenoid has its own damper/accumulator, which consists of a metal piston and a rubber spring. In my experience, when an EDS solenoid goes faulty, this results in the rubber spring of its damper getting hammered, to the point where the squashed spring no longer functions correctly.

The dampers (ZF p/n 1068 227 039) cost around a fiver each (you need seven, as there are seven solenoids) and, unfortunately, to get at them you need to split the two halves of the valve body assembly.

Click image to enlarge

Between the two halves is sandwiched an intermediate sheet or plate, which is printed with sealant, and invariably this sealant fails (peels off) when the housing & cover are separated, requiring a new intermediate sheet to be fitted. The sheet (ZF p/n 1068 227 063) costs around £85. Note that the E-shift versions of the 6HP28 use a different intermediate sheet (1068 227 065), so it’s important to ensure the correct ‘063’ one is sourced for the Range Rover M-shift Mechatronic.

Click image to enlarge

If possible, when the valve body is split you should lift the housing (the thicker piece which houses the solenoids) off the plate because the plate also contains 8 check balls, a rocker valve, a filter and 4 check valves. Care is needed to ensure that these fiddly pieces don’t end up on the floor and get lost.

Sonnax produce a Zip Kit for the 6HP28 Mechatronic, which replaces the rubber-sprung dampers with ones with steel springs, which is another alternative.

Phil

8th Dec 2023 12:33pm

dhallworth

Member Since: 10 Oct 2011
Location: Glasgow
Posts: 3203

Thanks Phil,

Sounds like it’s worth stripping the valve block down when I go back in there to do the solenoids then.

Part of me thinks that the ZF parts have lasted this long, it’s probably not worth going down the route of the Sonnax kit.

I reckon my shopping list for Sussex Autos will be:

Service Kit (Sump, oil, bolts)
Solenoid Set
7 Dampers
Intermediate Plate

Hopefully it’s a fairly straight forward process to rebuild it once it’s back on the bench!

Is it worth sending the block away to be pressure tested once it’s done or just refitting it and clearing the adaptions?

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior

8th Dec 2023 1:09pm

RRPhil

Member Since: 22 Aug 2011
Location: Blackburn, Lancashire
Posts: 1002

Quote:
Part of me thinks that the ZF parts have lasted this long, it’s probably not worth going down the route of the Sonnax kit.

Completely agree

Quote:
Is it worth sending the block away to be pressure tested once it’s done...?

I don’t think that pressure testing should be necessary. Unlike with (say) the earlier GM 5L40-E transmission, the 6HP valve blocks don’t have a reputation for wear & subsequent leakage. Just faulty solenoids and dampers!

I recognise that the expense is mounting up, but clearly this process is still a lot less expensive and time consuming than having to take the transmission out and replace the torque converter

Phil

8th Dec 2023 1:51pm

dhallworth

Member Since: 10 Oct 2011
Location: Glasgow
Posts: 3203

Do it once, do it right and it shouldn’t be an issue for me again… hopefully! 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior

8th Dec 2023 1:54pm

Sandyt

Member Since: 07 Nov 2013
Location: Wraysbury Windsor
Posts: 2279

2007 Range Rover Supercharged 4.2 SC V8 Buckingham Blue

Fantastic result and as ever a great read really pleased you got it sorted David
Not sure you will get away with tinkering too much over the Christmas holidays

9th Dec 2023 9:47am

dhallworth

Member Since: 10 Oct 2011
Location: Glasgow
Posts: 3203

Right, the parts are all ordered.

ZF Filter/Sump from Duckworths - £80

ZF parts from Sussex Autos:

Dampers were £5.26 + VAT
Intermediate plate was £68.73 + VAT
Solenoids were £229.27 + VAT

Total - £401.78

Smith and Allan Lifeguard 6 Oil - £70 inc VAT

All in its costing just under £600 to hopefully sort the gearbox once and for all.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior

12th Dec 2023 5:58pm

dhallworth

Member Since: 10 Oct 2011
Location: Glasgow
Posts: 3203

Parcel from Sussex Autos arrived this morning.

The intermediate plate:

The 7 dampers:

The solenoid set:

There’s an extra bag in the solenoid set which contains a green and black solenoid along with what looks like a brass plunger but I don’t recognise these as being for my gearbox:

There’s also a wiring loom included too. I didn’t really look last time but I don’t recognise this either:

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior
2013 Range Rover Sport SDV6 HSE Black Edition in Santorini Black with Ebony Interior

15th Dec 2023 11:04am

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