Need help on timing 2004.5 S40 T5 from scratch

08011982 · Post by **08011982** » 22 Aug 2018, 11:47

Hello

I bought a 2004.5 S40 T5 and the timing belt broke and bent the valves and the previous owner already dis assembled the head and camshafts. This is my first Volvo and it’s nothing like what I’ve worked on before.. can anyone help me with how to time this thing I know it’s all by marks... how do you time the camshafts? And how do I adjust the VVT to properly set and time them... any help would be greatly appreciated. Thank you

Post by **RickHaleParker** » 22 Aug 2018, 18:44

I think the VVT used on the 2004 S40 with a B525T3 is the VVT that is not adjustable. You do that type just as you did the Non-VVT engines. Can you take a picture of the VVT and post it?

08011982 · Post by **08011982** » 23 Aug 2018, 10:06

Thanks for the reply I have posted pictures of the VVT

Post by **RickHaleParker** » 23 Aug 2018, 15:38

The reason I had the impression that there was no VVT adjustment is because there are no specific VVT alignment procedures in VIDA 2014D. However after reading the VVT install procedures, there is a VVT/Camshaft alignment procedure. It is implied in the VVT install procedures not explicitly stated.

Read the VVT install procedures until you come to "Note! Only tighten the bolts finger tight at this stage" From that point, one locks down the Crankshaft (the Camshafts are already lock down), Jump to the timing procedures, comes back to the VVT install procedures and torques the VVT center screw.

There is only logical reason for leaving the VVT center screw loose when doing the timing, so that the relationship between the VVT and the camshafts can be aligned.

If the engine was running correctly before disassembly and one does not loosen the center screw. One does not need to adjust the VVT, that is most likely where the notion these VVTs are not adjustable comes from.

In short: The procedure for aligning the VVT/Camshaft is to lock down the Camshaft and align the VVT to the timing marks.

After you get the center screw torqued down. Tap the timing belt with a rubber mallet, rotate the engine by hand clockwise four revolutions to seat the timing belt. Don't go counterclockwise, doing so can cause the belt to slip.

I combined the VVT procedures and the Timing procedures into one pdf and attached it.

Post by **jimmy57** » 23 Aug 2018, 16:28

The flat VVT units used on all P1 and P3 until THE END are the type with internal locking pin. You try to rotate right and left and if it only moves a faint amount it is locked, other wise when you move it it will lock. Install finger tight as listed and onto cams locked by the locking tools on rear of cams. The crank must be in position noted by mark on back side of cam belt gear hub adjacent to the serpentine belt pulley side. There is another mark is in rear in valley between teeth or marked on two teeth and you align split between the two. Install belt with marks on gears aligned with pointer notches on top cover or don't bother and once you have completed the install you can mark the VVT by the notches. The VVTs are left loose and the tensioner is tensioned past the indicator being the range indicator uprights and then is brought back between the uprights to assure the hubs rotate to correct postions when belt is tensioned. Once tensioner is secured then torque the TX55 bolts in the VVTs to 89 ft-lb. This is all strange as cam gear/VVTs float on cams with no keys. You lock cams with tool and put crank in position and tighten everthing. The marks on VVTs are only there if the belt comes off for belt change, crank seal (not cam seals-that requires the full re-time process), or water pump replacement. Lots of engines are done like this as it puts things where they should be and head gasket thickness or machining head would not affect cam timing like it does with fixed keyways.

08011982 · Post by **08011982** » 24 Aug 2018, 05:18

Thank you Rick and Jimmy for the information, I’ve searched everywhere looking for what y’all have provided me. Thank y’all again

08011982 · Post by **08011982** » 25 Aug 2018, 17:47

I just got done putting the head on and before I go any further I want to double check and make sure I understand this right cause I don’t want to bend any valves although I’ll turn the engine by hand and everything and make sure they don’t hit after I time it. But the way I understand this is my VVT is NOT spring loaded so I just have to make sure all the marks are lined up after setting the tensioner and rotate engine like 3 times and make sure everything comes back to all marks.

joseph777 · Post by **joseph777** » 29 May 2020, 12:13

Could you confirm this is also relevant for 2013 S60 T5? (i.e. B5254T12)