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Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines. |
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D5252T timing pump setting valueViews : 932 Replies : 9Users Viewing This Thread : |
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Mar 15th, 2024, 20:21 | #1 |
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D5252T timing pump setting value
Hello everyone.
I am a car-tech from France (currently working for a French brand but used to work on some older various cars - not so much on Volvo's) - and car enthousiast for more than 20 years. As it is my first post, I will tell the situation leading me to be here. One of my friend just bought a 1998 Volvo V70 2.5 TDi to replace his former +500.000km S40 1.9 TD (I dubbed him "Volvoman" because he loves this brand. He also have a 440. I service all his cars). The V70 is pretty mileaged (more than 400.000 km) but looks very good (exactly the same than Gustavo Fring's one !) He experienced start problems and smoke. I plan to replace the timing and diesel pump belts to get the most accurate timing. I fail to find factory informations about this engine but find the Audi engine workshop manual which is very helpful. It seems that Volvo D5252T is very close to Audi AEL engine, although, it there is some variation (ie. fine setting of the timing is made by twisting the pump for Audi ; using an eccentric belt roller to Volvo, which is not really "Tipp-ex-timing-specialist"-friendly). And that's why I'm here. I think I won't have any trouble timing the camshaft (planned to have it set with tool in the slot, equal shims in each side then torquing the tapered cam pulley). I also have no problem with the way to set statically the injection point (have dial indicator ready for this) ; and then understand the fine adjustement using diagnostic-software. The problem is I don't have the "official" value for the static, nor dynamic timing : * Audi AEL engine workshop manual require lift of 0.32mm - then read 0.25 when checked. * I find on this forum the value of 0.55 +-0.02 (I think it's in mm). * I find french sources wich deal with 1mm lift. As close to the AEL engine the D5252T is, Volvo may have tuned the engine differently so it seems possible that the AEL value doesn't match at all. There may also have some emission/country specifications that lead to set the timing differently (my friend's car is from Germany, if I'm not wrong). I would like to get the correct timing at first try ! I would also like to do the dynamic timing setting afterwhat and doesn't have any value except from the Audi manual. My personnal tools doesn't communicate with the car but I have access to powerful multi-brand which I hope, will do the job. I'm looking for informations about other ways to do it in case it doesn't work. I am a little confused if VW-tools can do this (some sources tell yes, other not). Keeping an eye on VOL-FCR by the way ; can buy the licence if it can do the job and communicate with all the other ECU (especially ABS and SRS). Any feedback about it is welcome ! (1/2) |
Mar 15th, 2024, 20:22 | #2 |
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The questions :
* What is the correct lift value to statically set the pump (if you can give me your sources, I would be pleased, even if it's from your experience only !). * Same question about dynamic timing with software (a chart would be a must). (do somebody have the Volvo manuals for these engines / cars to have these correct values ?) * All information about software capable to check the dynamic timing is welcome ! (even if it looks ugly and give only temp/angle values; and not beautiful charts, as long as it can run the "basic settings"...) Also, if you're a VOL-FCR user, you can also talk about it ! Sorry for being that long, thanks in advance for your answers ! (2/2) - Sorry for splitting into 2 messages, but it seemed too long and I get a persmission error while submitting. Last edited by JCF; Mar 15th, 2024 at 20:27. |
Mar 15th, 2024, 22:32 | #3 |
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Hello and welcome JCF,
Not wishing to be disrespectful but this has been discussed at great length across the relevant forum/s. It's a specific engine, on specific models, so I suggest you try a Google search for "VOC D5252T dynamic timing" as you will find everything, and more, that you need to know. Plenty of threads on the same here and elsewhere. Without software the only way to time these Bosch VE pumps is with a dial gauge...some would argue the latter being the only way.
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
Mar 16th, 2024, 10:29 | #4 |
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Hi,
No problem, I know how forum works and I was expecting this kind of answer. I actually searched Google and the forum before registering ; many threads, but still confusing values from nowhere. Just looking for reliable source and there is not. Still afraid using the wrong value. Dynamic is obviously a must, but you can't run a dynamic if there's no static timing and I wish to get it as perfect as possible. But now I'm logged in the forum, I can open an attached screenshot from Volvo D5252T Service Manual, which gives a (new) lift value of 0.275mm (+/-0.02). Still don't know if it match my car specification, but it is the most trustable source I get so far. Hopefully, all D5252T have the same static setting, for every models and every years of production. Thank you ! |
Mar 16th, 2024, 12:00 | #5 |
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This probably doesn't help too much, but when I had one of these years ago, I got VOL-FCR specifically for dynamic timing when changing the pump belt, and it worked very well despite being relatively costly. It was obvious it hadn't ever been done properly before I got the car...
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Mar 16th, 2024, 14:26 | #6 | |
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A quick search brought up this thread from Purdydog: 850 tdi Static Fuel Pump Timing/Belt Change
See valuable information from Martin Cox, SwedishBus and Rudi Dudi where he gives the DTI values in post #6 Quote:
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
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Mar 16th, 2024, 14:45 | #7 |
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I had an 850 this and also a v70 tdi both with this audi engine and great cars they were too
I did the cambelt on the 850 twice and on the v70 twice aswell with no problems even without the dynamic timing . As you know it's pointless doing dynamic without setting the valve and pump static timing first . Once you have that set that then ( on the v70 ) just advance the timing very slightly then road test . If all OK and starting OK then again just slight adjustments until you get the Engine Emmisions service required in the drivers info display then back it off slightly . If the engine is otherwise healthy it should not take more than 2 turns of the crank to start it and then pull well with no smoke There was also a crank hold tool for these engines as the pulley bolt is extremely tight As has been said if you can get the appropriate software for dynamic timing then that would be the most accurate
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Mar 16th, 2024, 15:39 | #8 | ||
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Thanks for your answers !
Quote:
Quote:
Just for curiosity, do you know the DTC triggered when your emission warning message is shown at the dashboard ? |
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Mar 16th, 2024, 19:35 | #9 | |
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Quote:
The 0.55 value applies if you don't have the software to hand to perform the dynamic timing test and using just a dial gauge. Assuming the camshaft is correctly aligned and locked, fit the pump belt and tensioners with the pump cam pully screw slightly slackened to allow the pully to turn. You can now set and lock the pump at 0.55 with the dial gauge then, using a suitable counter hold, torque the pump cam pulley screw. Don't forget to undo the pump locking screw and replace its shim!
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
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May 26th, 2024, 18:48 | #10 |
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I don't think it really interests people, but I give some news about this situation.
Don't understand why the target value won't be 0.55 if it is close to the value achieved after dynamic setting. Maybe at this value, the lift of the pump in relation to its angle is very sensitive thus hard to reach accurately. About my friend : his V70 broke-down since, so had to to work on it in a hurry. While troubleshooting the no-start and other problems ; I had time and room to work on it and decided to check the pump timing. At TDC, I measured almost no lift so tryed to adjust the roller only but wasn't able to get the correct value. Needed to loosen and adjusting the cam pulley (I find that weird as the timing was probably lost during a Tipp-ex belt-job done 10 years ago). I decided to ajust at 0.275 to follow the Volvo Service Manual process. After all the work done and the other issues fixed ; the way the engine start improved dramatically ! It starts almost immediately after turning the key (weather is not really cold, but even at these temperatures, the car never started well). The owner told me that it runs like a charm and don't have hesitation anymore at around 110 km/h. It is still slightly smokey/stinky when you are stationary or in hard load ; but not so much condidering it is a 90's diesel and much less than before. I expected to have the dynamic timing done afterthat. I get VOL-FCR some weeks ago but learned the hard-way that his V70 has unfortunately a MSA 15.8 ECU which won't communicate. Wasn't more lucky with my low-quality DS150 clone. I still have hope to communicate with the ECU with a powerful tool I had at my job ; but I don't think I will even try, considering the owner is really happy with it. Many thanks for your interest and your advices ! |
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