The mysteries of part numbers? CBZB Timing chains??

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silver38
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Joined: Thu Sep 13, 2018 7:12 pm
Drives: GTi+
Location: N. Ireland

Re: The mysteries of part numbers? CBZB Timing chains??

Post by silver38 »

Just changed the timing chain on CBZB using the kit, also oil pump sprocket and chain.

Anyone know the procedure using VCDS for timing chain adaption?

Thanks
Erik Jan
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Joined: Tue May 07, 2024 9:06 am
Drives: Polo 6r 1.2TSI (2010)
Location: Friesland

Re: The mysteries of part numbers? CBZB Timing chains??

Post by Erik Jan »

New here. About to change the timing chain on our 2010 1.2TSI CZCB Polo. The timing chain and crankshaft pulley are clear for me. Locator tools for the crankshaft and camshaft too.
Couple of questions remain;

Was the chain set for the oil pump also updated? (Since the crankshaft pulley will be replaced). Do you change both sets? If so, what part number is that kit?
What tools are used for this change? I saw some custom tool to press on the crackshaft pulley. Regular puller (3 legs) to get the old one off?
Replace timing chain covers also to the latest revision?
Is VCDS work neccesary when the timing chain is replaced?
TR90
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Joined: Sun Dec 03, 2023 8:01 pm
Drives: Polo 6R
Location: Helsinki

Re: The mysteries of part numbers? CBZB Timing chains??

Post by TR90 »

Erik Jan wrote: Tue May 07, 2024 9:41 am New here. About to change the timing chain on our 2010 1.2TSI CZCB Polo. The timing chain and crankshaft pulley are clear for me. Locator tools for the crankshaft and camshaft too.
Couple of questions remain;

Was the chain set for the oil pump also updated? (Since the crankshaft pulley will be replaced). Do you change both sets? If so, what part number is that kit?
What tools are used for this change? I saw some custom tool to press on the crackshaft pulley. Regular puller (3 legs) to get the old one off?
Replace timing chain covers also to the latest revision?
Is VCDS work neccesary when the timing chain is replaced?
The oil pump chain has no newer revisions. It is recommended to change the oil pump chain and sprocket too, as they wear out just like the timing chain and sprockets.
You need a 3 legged puller, and to press the new sprocket all you need is a heat gun (those what go to 600C), as the heat expansion is enough to let the sprocket slide in.
Erik Jan
New
Posts: 2
Joined: Tue May 07, 2024 9:06 am
Drives: Polo 6r 1.2TSI (2010)
Location: Friesland

Re: The mysteries of part numbers? CBZB Timing chains??

Post by Erik Jan »

I did the repair this weekend. Installation was pretty straight forward. I downloaded the manual that goes with the SKT timing kit. Ordered the set+oil chain and sprocket from our local VW dealer. Then, after looking it over, ordered the bolt for the oil pump sprocket...

For the rest, stick to the manual and with some basic wrenching skills, and the appropriate tools (Torquewrenches 5nm to 150nm, Multilock sockets, timing kit (bolt+camshaft lock), seal installation kit (way overpriced aluminium bush and cap), a good pulley puller and a lever with pins for holding the sprockets), the installation went smoothly.

Unfortunately, while pulling the spark plugs (for easy rotation of the crackshaft), I tore a spark plug cable in half. New set is to arrive today. So it hasn't been started yet. However, the difference in play in both chains is immense.
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Tools we used are:
https://www.amazon.nl/dp/B01MF9PD48?psc ... uage=en_US
https://www.amazon.nl/dp/B07RJY22KP?psc ... uage=en_US
https://www.hbm-machines.com/nl/p/hbm-1 ... -tot-32-mm (had to get an extra 1/4" 8mm socket for the timing cover)
https://www.tools2go.nl/bgs-krukaskeerr ... -1-2-l-fsi
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