Front diff lock oil change confusion

[martin j.]

'Wet' clutches are common with motorbikes and auto boxes - I know it seems strange having an oil/lubricant on the friction face but friction/tribology is a complicated beast!

I thought most modern bikes now had dry clutches, or should be ‘many’? The days of warming them up up to get a smooth gearchanges seemEd to be over.

 

[SuperV8]

From TPS website just for interest:-
Service intervals:

The table below gives an overview of these gearboxes and their service intervals:

Gearbox type	Gears	Service interval	Fluid*
DQ200	0CW	7-speed	No service interval	G 055512A2
DQ250	0D9	6-speed	40,000 miles - Fluid and filter	G 052182A2
DQ381	0GC	7-speed	80,000 miles - Fluid only	G 055529A2
DQ400**	0DD	6-speed	40,000 miles - Fluid only	G 052182A2
DQ500	0DL	7-speed	40,000 miles - Fluid only	G 052182A2
DQ500	0BH	7-speed	40,000 miles - Fluid only	G 052182A2
DL382	-	7-speed	40,000 miles - Fluid only	G 055529A2
DL501	-	7-speed	40,000 miles - Fluid and filter	G 052529A2

* Part numbers shown are for 1 litre bottles, a 20 litre product is also available
** Fitted to hybrid models, only EV certified technicians should work on these vehicles



Top tip: always refer to the Erwin Workshop Manual for the correct vehicle-specific interval, servicing instructions and filling capacities.

Curiously, for DQ381, which has a filter it seems, no recommendation to include it in the 80,000miles fluid change, though I'd think some people will change the filter along with the fluid at some lower mileage, but as the filter is not listed in the parts listings, maybe it needs to be bought in via a BorgWarner agent, if in deed it exists and is possible to replace while the box is fitted to the car. Does this not begin to sound like what is the official VW Group take on scope of Haldex servicing against what trans experts recommend, ie VW Group recommend "quick and cheap" servicing on trans units, which might be why I keep seeing an evolving "DSG going for repair" frame in my normal VW Group parts department, ie they started off being single stand alone transit frames, and then evolved into stackable transit frames - or even frames to hold 2 DSG units and now stackable, saves a lot of space in the departure area, maybe because lots of them are being moved out for repair. That constant sighting of DSGs waiting for collection has always worried me a bit, maybe company cars get abused more than privately owned ones?

Filter is listed:
0GC 325 183 A

 

[RUM4MO]

Must be a different data source than the one I use uses, all that was listed on the one I use was "DSG complete" and "fluid".

A small and insignificant comment/observation - I find it strange when VW Group use the original BorgWarner part numbers. normally, or at least in the single case of a service part I bought, which was the eDiff pump gasket kit, VW Group just slap a simple VW Group sticker over the BorgWarner sticker.

Edit:- knowing the part number of the fluid filter cover O-ring as well could be handy.

 

[SuperV8]

Must be a different data source than the one I use uses, all that was listed on the one I use was "DSG complete" and "fluid".

A small and insignificant comment/observation - I find it strange when VW Group use the original BorgWarner part numbers. normally, or at least in the single case of a service part I bought, which was the eDiff pump gasket kit, VW Group just slap a simple VW Group sticker over the BorgWarner sticker.

Edit:- knowing the part number of the fluid filter cover O-ring as well could be handy.

BorgWarner is just a 1st tier supplier to VAG (and many other OEM's) for the Haldex units.
As far as I'm aware although the VAG DSG is a BorgWarner design VAG make it in house under license.
It's common practice for tier suppliers to 'manage' the part markings by either over labeling/grinding/painting etc.. I've brought an FAG washer pump before and could clearly see the FoMoCo part number ground off. The same practice does NOT happen with brake pads/discs.


Outer components for 7-speed dual clutch gearbox DQ381-7F

Frt.-wh.dr.+ RAS,TDH,TDK, TDM,UAV,UAW, UAZ+ PR:0IJ+G1C

filter : 0GC325183 superseded to 0GC325183A
O ring : N91084501 - remark 63,09X3,53
housing : 0BH325159

 

[RUM4MO]

Thanks for these parts numbers, I'll save them maybe for future use on that car.

Grinding of part numbers by parts suppliers that also sell into the aftermarket, yes, I've seen that mentioned for some suspension parts brands.

 

[Peller]

Scrolled through fast on this thread but the front 'half haldex' does need changed at 40k or 4 years. I had a specialist do it for £90

Sent from my moto g31(w) using Tapatalk

 

[queen]

Scrolled through fast on this thread but the front 'half haldex' does need changed at 40k or 4 years. I had a specialist do it for £90

Sent from my moto g31(w) using Tapatalk

Seat dealer told me every 3 years, changed it a few days ago, anyway did they also reset/adapted anything with the diagnostic tool? Dealer didn't and I can't stop thinking that maybe they should've?

 

[RUM4MO]

Yes, I always thought that 3 years was the VW Group recommended service period for Haldex fluids, the reset/adapted or maybe better called "basic settings" is probably just to get the system parameters back to factory settings by running the correct procedure to let the controller relearn the correct pressure map values, if any workshop carried out that procedure WITHOUT having removed the pump and clearing away the accumulated frictional material debris, then that could shorten the hydraulic pump's future life, so really not a problem if not carried out. Running that procedure AFTER cleaning the pump's sieve basket can only be a good thing.

By the way, I would not think that any VW Group dealership will bother removing the hydraulic pump and cleaning the sieve basket, they will just be following the "correct" procedure of removing the fill and drain plugs and refilling with new Haldex fluid and hopefully fitting new drain and fill plugs, which seems to be a bit of a waste as just replacing the O-rings should be okay.

I might be getting near to being able to reach/replace this fluid in my daughter's May 2019 Cupra, it's mileage will be around 18K.

 

[queen]

Yes, I always thought that 3 years was the VW Group recommended service period for Haldex fluids, the reset/adapted or maybe better called "basic settings" is probably just to get the system parameters back to factory settings by running the correct procedure to let the controller relearn the correct pressure map values, if any workshop carried out that procedure WITHOUT having removed the pump and clearing away the accumulated frictional material debris, then that could shorten the hydraulic pump's future life, so really not a problem if not carried out. Running that procedure AFTER cleaning the pump's sieve basket can only be a good thing.

By the way, I would not think that any VW Group dealership will bother removing the hydraulic pump and cleaning the sieve basket, they will just be following the "correct" procedure of removing the fill and drain plugs and refilling with new Haldex fluid and hopefully fitting new drain and fill plugs, which seems to be a bit of a waste as just replacing the O-rings should be okay.

I might be getting near to being able to reach/replace this fluid in my daughter's May 2019 Cupra, it's mileage will be around 18K.

They just changed the fluid nothing else. They also mentioned that it was the first time they've ever done it (even though they are a very knowledgeable and reputed dealer btw). Shocking!