DAF Unit Pump Failure: Troubleshoot & Repair

With yellow engine warning on the dash and unit pump issues showing on jaltest, things were not looking good for this old euro 6 DAF CF.
But with the help of Jaltest smart guides i could work through the technical information available and successfully diagnose the issues presented to me.
as always anything i use in the video such as the leads can be found over at www.trucktechuk.com/product-p...
🔧 Got Repair Stories to Share? 🔧
We love hearing from our viewers! Share your own diagnostic experiences and repair tales in the comments. Let's build a community of tech enthusiasts passionate about solving challenges and mastering the art of repairs.
🛠️ STUCK FOR HELP, DON'T MISS OUT! 🛠️
Did you know Truck Tech UK also has a member-only area!!!! This gives you access to posts and videos not found in the public domain! Also questions and answers for members who are struggling with faults and want help.
All that and more can be found over at: www.trucktechuk.com
#fuelfault #jaltest #trucktechuk #cf #dieselmechanic #repair #diagnostics #paccar #unitpump #daf

[@robertanderson-yx8mo]

Absolutely great video with fantastic editing, you really are master technician, loved it

[@TRUCKTECHUK]

Oh thanks mate 😎.......but the video editing is getting worse ha ha ha I haven't even got time to do voiceovers now so I just waffle on while I'm doing the job 🫣

[@issaabdulkarim338]

Very informative 👏

[@TRUCKTECHUK]

Glad you enjoyed it 👏

[@issaabdulkarim338]

Great job

[@TRUCKTECHUK]

Thanks for the comment and for watching buddy 😎👌

[@darrenhearn1365]

Nice on the job video that, liked the final comment.... customer walks in the yard this week and I think why have you that diagnostic kit in your hand.....at least I didn't have to drive anywhere !

[@TRUCKTECHUK]

Ohhhh mate I need wiring to me lol I'm going to put an airtag on it but I need to set up some sort of geo-fence so when I go say a mile away it alerts me.

[@luisjaimegomez1085]

excellent job, you are a great master. thank you for sharing your experiences.

[@TRUCKTECHUK]

Thanks for the comment and for watching 👀. Hopefully, it helps you at some point 👉 😎

[@luisjaimegomez1085]

@@TRUCKTECHUK Your videos have already helped me, I recently had a similar failure with the steering column tape on a CF 410, but it caused a problem with the lights, they stayed on all the time even though the vehicle was off. I initially checked and exchanged the CMR and CMF with a vehicle without faults. but it was still the same. In conclusion, the fault was in the steering angle band.

[@TRUCKTECHUK]

Ah the old clock spring was the issue was it 😅🫣. I'm so happy something I did helped you buddy!

[@stevenkerry3101]

great job mate and very informative 👍👍

[@TRUCKTECHUK]

Cheers steve. Thanks for the comment and for watching buddy 😎

[@CarlosDominguez-ti4to]

Good video thank

[@TRUCKTECHUK]

No problem thanks for the comment buddy 👍

[@benyapetri4965]

Nice job buddy thanks for the video 👍

[@TRUCKTECHUK]

Beny! How are you doing buddy! Finally got your Sunday daf video fix 😂😂😂😍

[@benyapetri4965]

I am waiting for the next video mate !✌️

[@autobild01]

Great work👍

[@TRUCKTECHUK]

Thank you! Cheers for the comment 😎

[@damanayadekunle7232]

Good job 🎉

[@TRUCKTECHUK]

Thank you very much. And thanks for watching 👀 🙂

[@damanayadekunle7232]

​@TRUCKTECHUK your welcome bro

[@mauritztoivonen1070]

Thank you.

[@TRUCKTECHUK]

Thanks for the comment buddy, hope it helps one day 👌😎

[@PH-Truck-Mechanic]

Good job! I wish I had Jaltest too. What laptop do you use?

[@TRUCKTECHUK]

The tablet I use for jaltest is the one that comes in the package. I think it's a 13.5" Microsoft Surface Pro.

[@mickbusby782]

nice 1 buddy

[@TRUCKTECHUK]

Cheers mick. How's the custard creams today 😅

[@Franz_giblet]

I’m assuming you already know but one flat of the bolt head is 60 degrees, good video 👌🏻

[@TRUCKTECHUK]

Hey Franz, I've never looked 😂 I've always gone off what's on the technical data in front of me. The only time I've noticed torque markings on bolts is Cummins head bolts when I've measured and inspected them for re-use

[@Franz_giblet]

@@TRUCKTECHUK oh I meant as in the distance between one flat of the bolt head is 60 degrees, which is why their angles are normally multiples of 60 so when you’re tightening the bolt you can use it to work out 60 degrees.

[@TRUCKTECHUK]

Ah yes! I wish we had a torque figure and a standard angle torque! One day I'm doing a torque figure then 150 degrees, another day I'm doing I'm doing 30 degrees for fuel pipes...... 90 for injectors and in this case 60 unit pumps 😂😂😂😂.

[@sensorsmac5698]

I have trouble with lf euro 6 won't strat

[@pavelder1]

Привет, хорошее видео! Попробуй перчатки JSN NATRIX OR, рекомендую. И смотреться в видео оранжевый цвет будет лучше.

[@TRUCKTECHUK]

Hi thanks for the comment and for watching 😎. I need to get some more gloves....I will have a look for the JSN gloves now on amazon 👍😎

[@abhaygulati6514]

Last time i had one of these pumping units faulty i had to change the camshaft because the unit shat itself

[@TRUCKTECHUK]

Hey thanks for the comment. Yes same here, I don't think I had an electrical fault last time though I think it was a contribution issue. Not the best idea are they 🫣🔥

[@abhaygulati6514]

@@TRUCKTECHUK not the best idea and doesn't help that i removed the unit before lifting the tipper body was an absolute nightmare of a job to get to anything

[@Tomtrucks7]

Hello maigo, your content is very good, is it possible to still use daf davie xdc II in this vehicle

[@TRUCKTECHUK]

Hey thanks for the comment. Possibly it depends if you have the PRS file for the chassis but DAF have started removing these for 2016 now

[@Tomtrucks7]

@@TRUCKTECHUK tks

[@TRUCKTECHUK]

No problem buddy

[@warhammermodsmith]

Sweet !!!!!

[@TRUCKTECHUK]

Hey stu. Thanks for dropping by and for watching buddy 😎. When do you start nights? Tuesday?

[@warhammermodsmith]

@@TRUCKTECHUK got a week on days , then on to the night shift next week!!

[@TRUCKTECHUK]

Ah Colin with his week on days! Let's hope he doesn't get you to service all the vans this week 😅🙄

[@warhammermodsmith]

@@TRUCKTECHUK probably , but that’s ok!!

[@alirezanaghian8848]

How can I get daive 4 license please help me

[@TRUCKTECHUK]

Daf will give you one

[@amitmohabir50]

Do you work on MAN trucks?

[@TRUCKTECHUK]

Hey thanks for the comment. I don't really. I just specialise in DAF

[@norb0254]

Suprised you haven't got TRP brake cleaner with it 25% extra free lol Im sure it has been on the cans since they started making it

[@TRUCKTECHUK]

Oh norb I've just had to buy 25ltrs of brake cleaner for use in a hand pump! Have you seen the price of brake cleaner these days! we can't afford TRP brake cleaner! The best thing is that the non 25% extra can is the same size as the 25% extra free tin ha ha ha !

[@amyedwards3706]

👏🏻👏🏻👏🏻

[@TRUCKTECHUK]

First to the comments I see 😅

[@warhammermodsmith]

😂😂😂😂😂

[@mhdphotographys9031]

Weather it's in your line (HGV) or mine (cars) why is there always bloody parts changers. Muppets the lot of them.

[@TRUCKTECHUK]

Hey buddy thanks for the comment. Unfortunately, it's people who aren't educated in diagnostics and believe putting expensive components on will rectify it, whereas testing is just charging that little bit more labour bout will yield the correct component at fault (usually😂)