|
850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
Information |
|
2.5D crank locking toolViews : 984 Replies : 15Users Viewing This Thread : |
|
Thread Tools | Display Modes |
|
May 7th, 2021, 22:16 | #1 |
Junior Member
Last Online: Today 21:52
Join Date: Aug 2019
Location: Carlisle
|
2.5D crank locking tool
Question for the cambelt installer gurus
I am about to refit my crank pulley and when I insert the crank locking tool, the crankshaft is moving away from the TDC Mark ever so slightly. Should I be concerned? |
May 7th, 2021, 23:09 | #2 |
VOC Member
Last Online: Today 21:26
Join Date: Dec 2001
Location: Hull
|
I don't think you need worry if it's only a few degrees off. The purpose of the locking tool is purely to allow you to loosen and tighten the crankshaft pulley bolt whilst holding the crank close enough to TDC so the valves don't hit the pistons.
Just ensure that when fitting the cambelt that the crankshaft is set to TDC using the reference marks on the flywheel and the bell housing once the locking tool has been removed. Martin 1998 V70 TDi auto 227,000 miles |
May 8th, 2021, 04:21 | #3 |
Junior Member
Last Online: Today 21:52
Join Date: Aug 2019
Location: Carlisle
|
Cheers Martin, that seems to make sense. I have already done the belt to the marks and was at the stretch to yield bolt tightening stage.
I guess that once I have removed the crank locking tool, I can return the crank back to its TDC Mark, ensure my cam is still in position and then tighten my cam sprocket. |
May 8th, 2021, 19:42 | #4 |
Junior Member
Last Online: Today 21:52
Join Date: Aug 2019
Location: Carlisle
|
Well I went with it and removed the crank locking tool. Tightening my cam sprocket up cambelt side of engine and gave it two revolutions. I noticed however on my cambelt tensioner, the pointer is now 4mm below the fixed mark but before I rotated the engine twice by hand it was 2mm
Will I need to readjust the tensioner all over again? |
May 8th, 2021, 19:45 | #5 |
VOC Member
Last Online: Today 21:26
Join Date: Dec 2001
Location: Hull
|
That sounds right. Ensure the crank is at TDC and the camshaft locking tool is holding the cam in the correct position and the camshaft sprocket is free to turn on the taper on the end of the camshaft.
Fit and tension the belt, then do up the sprocket bolt. Turn the crank by hand through two complete turns (or any multiple of 2 turns if you're feeling energetic) and check everything lines up as it should at TDC once more and you're done. Martin |
May 8th, 2021, 19:54 | #6 |
Junior Member
Last Online: Today 21:52
Join Date: Aug 2019
Location: Carlisle
|
Thanks Martin, that’s what I am saying. I had my cam sprocket loose to turn freely when I set my tensioner 2mm below the fixed mark. I nipped up the main crank bolt and my cam sprocket bolt and then done the two revolutions. Everything lines back up on the crank and cam markings but I was kind of expecting the timing belt tensioner pointer to have retained a 2mm gap but it is now at about 4mm
|
May 9th, 2021, 12:41 | #7 |
Junior Member
Last Online: Today 21:52
Join Date: Aug 2019
Location: Carlisle
|
Okay it was bugging me that much, I took it all apart again and retensioned the tensioner pointer to 2mm past the fixed mark on the tensioner.
I have realised that when I am tightening my cam sprocket on the cambelt side to the required 100Nm the pointer on the tensioner is turning another couple of mm approx. So yet again the pointer is now again about 4mm beyond the fixed mark. Does anyone have any thoughts on this? If I am to ensure I only have 2mm at the end of my tightening procedure I would probably have to start with my tensioner pointer level with the fixed point on the tensioner if it’s moving when I nip up the cam sprocket. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|