ABY Timing belt/water pump woes.

[re2500]

Ive been collecting parts over the past few years in preparation for a timing belt renewal on my ABY.
I decided to go ADU belt and pump, just because...
I bought the pump first from a forum member and was sure i had the correct one based on this:

http://s2central.net/Timing_Belt_Renewal_Rev1.pdf

I confirmed the PN via PM before purchase and counted the teeth and checked PN when it arrived:
PN: 034 121 004A on box, pump has 29teeth.

IN the mean time i aquired a roller, crank bolt and sprocket (all common to ABY and ADU so no prob) but also sourced a RS2 belt.

But i have since found out that 29 teeth is not an RS2 pump

Can anyone confirm what pump i have?

If its an ABY pump then should i buy another pump for an ADU or another Belt for an ABY

thanks in advance for any help.

[re2500]

Just had another thought, it is possible that he PN on the pump box does not correspond to the pump in the box? Wouldnt be the first time....

[re2500]

Anyone know what pump this is?

[Laaf]

There's a picture of a ADU waterpump, the sprocket has got 4 holes in it and 26 teeth. The housing part number is 074 121 019C which is a 5-cyl TDI number.

[twoqu]

According to this it sounds like a 3b pump.

http://www.s2-audi.co.uk/tech_articles/useful_part_numbers.htm

A pic would have helped to ID it. Does it have three bolts holes or are two of them slotted? If its slotted its not an ABY/RS2 fitment.

[re2500]

Cheers guys, it does have slots, so sounds to me like i have a 3B, 7A etc waterpump.
Time to find a decent quality and reasonably priced ADU pump...

[Laaf]

Cheers guys, it does have slots, so sounds to me like i have a 3B, 7A etc waterpump.
Time to find a decent quality and reasonably priced ADU pump...

The ADU waterpump would have cost me 399€ from Germany, and they are available through Audi only. I went for a AAN pump and belt. Also the guy I buy parts from stated the ADU timing belt was the last one in Germany