Manufacturing fault!!

[Davidb]

My car (5.0l R)has been at the dealers for its third annual service and they have identified a problem when going to change the transmission fluid. The fixings on the cover that needs to be removed were just spinning. The car has been moved to a specialist and I’ve been told the following. “The bolts are in box section, which are located on the floor section under the car. They have had to cut this section out and use an aluminium specialist to cut a new floor section.”

This sounds horrendous to me, has anyone had a similar problem or words of comfort?

[Deleted User 1088]

nope .. never heard of this problem

[simpleR]

That does sound bad and dramatic.

I'll check the workshop manual later to try and determine which bit they are on about.

[Fez]

There are aluminium box sections which run down the floor of the F type, I presume they give strength to the floor. I am presuming they are talking about the under car engine cover, which needs to be removed during servicing.

[simpleR]

The workshop manual for V8 R says......

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The ZF 8HP70 transmission is an electronically controlled, hydraulically operated, 8 speed automatic unit. The hydraulic and electronic control elements of the transmission, including the TCM (transmission control module), are incorporated in a single unit located inside the transmission and is known as 'Mechatronic'. The ZF 8HP70 transmission has the following features:
- Designed to be maintenance free
- Automatic Transmission Fluid (ATF) is 'fill for life'

Normal maintenance - Filled for life.
Severe duty maintenance - Change the fluid at 48,000 km (30,000 miles) intervals.

So I'm not sure why it is being done? But you have no signature or country so unsure on this. Who is doing the service?

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The procedure for replacing, refilling or even checking the transmissions fluid states:
To access the drain/filler plug Refer to: Air Deflector (501-02 Front End Body Panels, Removal and Installation)

This is single piece of trim and 1 page in the 28000+ page manual. To remove - Undo bolts. To refit - reverse the removal procedure.

The front ones are bolts so they are threaded and should just unscrew. It says to tighten to 9Nm on refitting.
The rear ones it says are nuts and bolts. So yes I guess they will spin as you need to insert a tool to hold the nut whilst you turn the bolt? It says to tighten to 4.1Nm on refitting.

So that makes even less sense to me. There are no special tools required. I guess a screwdriver and maybe a spanner to hold the nut? A little heat if its stuck. Drill the old bolts out? WD40!!

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According to the manual there is no need to remove anything other than the deflector when changing or checking transmission fluid.

Your garaged quoted as saying “The bolts are in box section, which are located on the floor section under the car. They have had to cut this section out and use an aluminium specialist to cut a new floor section."

If they had to cut the deflector out then OK, just order a new deflector. Why would they get an aluminium specialist to cut a new bit?

Anyway HTH

[daytona650]

Was this at a main dealer?

Sounds over the top to me . If it is a main dealer i would want more information, pictures and Jaguar's take on it before anybody cut anything on my car!

[cj10jeeper]

I would imagine the bolts at the front are into rivnuts into the body box section and are the ones spinning.
Can’t see why you’d need other than to grimd their heads off and with the panel removed them drill or cut out the remaining stud. All it then needs is new rivnut or at worse some minor alloy repair/weld.
I cannot imagine the need for new box sections
Most likely a poor description by the dealer or increased opportunity by the specialist

[Davidb]

The workshop manual for V8 R says......

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The ZF 8HP70 transmission is an electronically controlled, hydraulically operated, 8 speed automatic unit. The hydraulic and electronic control elements of the transmission, including the TCM (transmission control module), are incorporated in a single unit located inside the transmission and is known as 'Mechatronic'. The ZF 8HP70 transmission has the following features:
- Designed to be maintenance free
- Automatic Transmission Fluid (ATF) is 'fill for life'

Normal maintenance - Filled for life.
Severe duty maintenance - Change the fluid at 48,000 km (30,000 miles) intervals.

So I'm not sure why it is being done? But you have no signature or country so unsure on this. Who is doing the service?

----------------------------------------------

The procedure for replacing, refilling or even checking the transmissions fluid states:
To access the drain/filler plug Refer to: Air Deflector (501-02 Front End Body Panels, Removal and Installation)

This is single piece of trim and 1 page in the 28000+ page manual. To remove - Undo bolts. To refit - reverse the removal procedure.
Untitled.png

The front ones are bolts so they are threaded and should just unscrew. It says to tighten to 9Nm on refitting.
The rear ones it says are nuts and bolts. So yes I guess they will spin as you need to insert a tool to hold the nut whilst you turn the bolt? It says to tighten to 4.1Nm on refitting.

So that makes even less sense to me. There are no special tools required. I guess a screwdriver and maybe a spanner to hold the nut? A little heat if its stuck. Drill the old bolts out? WD40!!

----------------------------------------------

According to the manual there is no need to remove anything other than the deflector when changing or checking transmission fluid.

Your garaged quoted as saying “The bolts are in box section, which are located on the floor section under the car. They have had to cut this section out and use an aluminium specialist to cut a new floor section."

If they had to cut the deflector out then OK, just order a new deflector. Why would they get an aluminium specialist to cut a new bit?

Anyway HTH

That’s really interesting. My guess is that the two nuts and bolts are the ones that they had problems with as they, for whatever reason, weren’t aware that they are nuts and bolts.

I’m going to demand that they show me exactly what they have done. I’m not happy.

BTW I’m in the UK, in Kent.

[Davidb]

I would imagine the bolts at the front are into rivnuts into the body box section and are the ones spinning.
Can’t see why you’d need other than to grimd their heads off and with the panel removed them drill or cut out the remaining stud. All it then needs is new rivnut or at worse some minor alloy repair/weld.
I cannot imagine the need for new box sections
Most likely a poor description by the dealer or increased opportunity by the specialist

I think they got the two at the front out and it’s the nuts and bolts that are spinning. Whichever it is they clearly don’t know what they are doing.

[simpleR]

So it can't be a Jaguar dealer??? otherwise they would have the workshop manual of how to remove it.