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D5252t crank sprocket later round keyway help

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Old Aug 11th, 2021, 22:51   #11
Martin Cox
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It sounds as though the hydraulic lifters, cam followers or tappets; call them what you will, have borne the brunt of the damage when the engine lost its timing. I'd suggest you'll probably need to replace them all.

When the belt broke on my D5252t in the V70 some 4 years ago I had one slightly bent valve, one cam follower stuck in the cylinder head, 4 cam followers with cracked and split surfaces and another 3 with visible marks: only 2 of them appeared to have survived unscathed.

I had a local engine rebuilding works free the stuck follower and overhaul the head. they supplied a full set of cam followers so I simply replaced the lot. They weren't that expensive then and I think they supplied FAI ones if memory serves me correctly. To date they've been fine.

For me, the worst part of the job was creating enough space to free the exhaust manifold from the head. Disconnecting the turbo oil return pipe from the cylinder block did the job but if you don't have a hoist the bolts are an absolute pig to get to if you have to do it lying on your back under the car.

Good luck with the repairs and it's always good to hear of another one being saved.

Martin

1998 V70 Tdi Auto, 228,000 miles
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Old Aug 12th, 2021, 09:21   #12
Juba
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Thanks Martin,

Yes we noticed the fine cracks in 5 hyd lifters today so your right they have taken the force.

Will replace all.

My recon man reckons should replace all valves also.

I guess guides should be ok but might have close inspection.

Yip getting manifold out of way was a pain but did all from above.

Spending more than this car is worth oh well hopefully I’m happy once I get it going.
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Old Aug 15th, 2021, 21:58   #13
brickman
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Manifold you can just get it out the way enough if you have another pair of strong hands without taking the turbo return line off, getting it back on harder as you have to be putting your head back on carefully without knocking any dirt into the mix.

Getting the head in and off is fine, getting the sump off, jesus H, took me hours of pushing and pulling. Ended up cutting off a small piece of the sump in a corner that was stopping it, came off in 2 mins after that and easy enough to get back on. Suspect sump had been damaged before and someone put a slightly different one on. Fresh gaskets everywhere, all dry now, no more automatic rust prevention system
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