IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy anything with this and it helps MVS!

Timing procedure write up

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

Nathan79
Posts: 20
Joined: Thu Dec 28, 2017 12:41 am
Year and Model: 07 XC70
Location: Colorado
Has thanked: 0
Been thanked: 4 times
United States of America
Nathan79

Timing procedure write up

Post by Nathan79 » Mon Mar 30, 2020 8:23 am

Hello,
07 xc70, 2.5L turbo, dual vvt cams... Looking for a timing procedure write-up with instructions that include unknown cam & pulley positions. As of now Pulleys are off cams & crank is not set "on mark".

Thank you,
Nathan

crazycat
Posts: 13
Joined: Sun Dec 29, 2019 2:41 pm
Year and Model: 2005 xc70
Location: Washington
Has thanked: 7 times
Been thanked: 1 time
United States of America
crazycat

Re: Timing procedure write up

Post by crazycat » Tue Mar 31, 2020 10:07 am

Set crank on mark.
Use cam locking tool to position cams.
Set cam pulleys using this tech..

Nathan79
Posts: 20
Joined: Thu Dec 28, 2017 12:41 am
Year and Model: 07 XC70
Location: Colorado
Has thanked: 0
Been thanked: 4 times
United States of America
Nathan79

Re: Timing procedure write up

Post by Nathan79 » Tue Mar 31, 2020 11:17 am

crazycat wrote:
Tue Mar 31, 2020 10:07 am
Set crank on mark.
Use cam locking tool to position cams.
Set cam pulleys using this tech..
Cylinder head, cams & pulleys are currently disassembled, and we're not marked before disassembly). My biggest question right now is how to set cams on cylinder head before cam cover & cam locking tool get applied. There are #'s stamped on back of cams where notches are... Should the numbers be on top or bottom when setting cams? Or will it be obvious when putting cams on cylinder head (as in, they only set in place when placed a certain way)?

Thanks
Nathan

User avatar
matthew1
Site Admin
Posts: 10478
Joined: Sat Sep 14, 2002 11:03 am
Year and Model: 850 T5, 1997
Location: Denver, Colorado, US
Has thanked: 566 times
Been thanked: 219 times
United States of America
matthew1

Re: Timing procedure write up

Post by matthew1 » Tue Mar 31, 2020 11:37 am

I can't tell if this viewtopic.php?p=442402#p442402 helps or not, but there it is for what it's worth.
Help keep MVS on the web -> click sponsors' links here on MVS when you buy from them.
Also -> Amazon link
. Click that when you go to buy something on Amazon and MVS gets a kickback.

1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
2004 V70 R [gone]

Image

Nathan79
Posts: 20
Joined: Thu Dec 28, 2017 12:41 am
Year and Model: 07 XC70
Location: Colorado
Has thanked: 0
Been thanked: 4 times
United States of America
Nathan79

Re: Timing procedure write up

Post by Nathan79 » Tue Mar 31, 2020 12:04 pm

matthew1 wrote:
Tue Mar 31, 2020 11:37 am
I can't tell if this viewtopic.php?p=442402#p442402 helps or not, but there it is for what it's worth.
Thank you for this info! We'll see how it goes...

Thanks
Nathan

User avatar
abscate
MVS Moderator
Posts: 21072
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 316 times
Been thanked: 981 times
Trinidad & Tobago
abscate

Re: Timing procedure write up

Post by abscate » Wed Apr 01, 2020 6:48 am

Once you get the crankshaft on the clearance mark you can put the cams in , in any position.

The clearance mark means no pistons are at the top of the cylinders and clear all the valves.

Does that help understanding?
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

User avatar
RickHaleParker
Posts: 4220
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 543 times
United States of America
RickHaleParker

Re: Timing procedure write up

Post by RickHaleParker » Wed Apr 01, 2020 2:26 pm

Nathan79 wrote:
Mon Mar 30, 2020 8:23 am
As of now Pulleys are off cams & crank is not set "on mark".
Installing the variable valve timing unit on the camshaft

Note! Oil the center screw before installation.
Camshaft alignment tool installed on rear of camshafts.

Push on the variable valve timing unit/timing gear pulley on the camshaft.
Install the center screw (1) which secures the variable valve timing unit to the camshaft. Tighten slightly.
Slacken off, but do not remove the screws (2) which secure the timing gear pulley to the variable valve timing unit.
Turn the timing gear pulley until the screws at the oval holes are in the center position. Tighten the screws (2) slightly.

Turn the variable valve timing unit clockwise to its limit position so that the unit is in its end position.
VVT_Adj.gif
VVT_Adj.gif (29.7 KiB) Viewed 264 times
Position the upper timing cover

Undo the center screw and continue turning clockwise until the timing gear pulley marking aligns with the marking on the upper timing cover.

Tighten the center screw (1) in the variable valve timing unit to 120 Nm. Center plug 35 Nm.

Installing the timing belt

Note! Variable valve timing units do not have return springs and are easily thrown out of position when the camshaft belt is installed.

Check that the markings align.
Install the belt in the following order:
  • the idler pulley
    intake cam
    exhaust cam
    water pump
    tension pulley.
Tensioning of cambelt

This adjustment is to be made with a cold engine.
A suitable temperature is approximately 20 °C/68 °F.
At a higher temperature, for example with a warm engine or a higher ambient temperature, the needle is further to the right.
The illustration shows the position of the indicator when aligning the timing belt tensioner at approximately 20 °C/68 °F.

Note! There are two different tensioners depending on model year.

Fix the belt tensioner center screw in position and turn the belt tensioner eccentric clockwise until the tensioner indicator passes the marked position and reaches the end position. Then turn the eccentric back so the indicator reaches the marked position illustrated. Tighten the center screw. See Tightening torque:Summary of specific components and tightening torques .
Check that the indicator is in the correct position.
Tensinor.gif
Tensinor.gif (19.43 KiB) Viewed 259 times

Tightening
Hold the center plug at 25 Nm at the same time tighten the 3 x (2) screws on the camshaft timing gear pulley to 10 Nm.

VVT_Tighten.gif
VVT_Tighten.gif (32.03 KiB) Viewed 260 times
Final check

Remove:
999 5452 from the rear of the camshafts
Install new plugs with new sealing washers. Tighten.
Checking the markings and belt tension.
Position the upper timing cover.
Turn the crankshaft 2 rotations. Check that the markings on the crankshaft and timing gear pulleys correspond.
Remove the upper timing cover.
These users thanked the author RickHaleParker for the post:
crazycat
--------
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

User avatar
darrylrobert
Posts: 180
Joined: Fri Mar 06, 2020 6:25 am
Year and Model: 2001 v70xc
Location: australia
Has thanked: 3 times
Been thanked: 7 times
Australia
darrylrobert

Re: Timing procedure write up

Post by darrylrobert » Wed Apr 01, 2020 10:49 pm

If i understand this correctl
1. the VVt sprockets were removed without a locking tool?
2. a locking tool was used but didnt alight any timing marks?
3 a locking tool was used and timings aligned but variable rotation was not marked?

VVT sprocket
pic 2.jpg
In worst case what i would do in this your situation is set the crank to its mark, then install your cam locking tool, mathmatically there are only 4 or 6? possible combinations then install the VVt sprockets as per directions. Turn the engine by hand very slowly, any interference turning by hand will not damage anything, damage only occurs when the engine is running. Keep trying until the engine rotates by hand, then start it. Good luck

Post Reply
  • Similar Topics
    Replies
    Views
    Last post