Crank bolt - diesel

kapilamuni · Jan 12, 2018

Hi, Guys,
Can I reuse the existing crank bolt with some thread locker liquid l?
We are having a long weekend and I'm yet to receive my ordered bolt. I doubt it will reach me today (Friday) and If I can use the existing bolt then I can complete the job by Monday.

Thanks in advance

gstuart · Jan 12, 2018

kapilamuni said:
Hi, Guys,
Can I reuse the existing crank bolt with some thread locker liquid l?
We are having a long weekend and I'm yet to receive my ordered bolt. I doubt it will reach me today (Friday) and If I can use the existing bolt then I can complete the job by Monday.

Thanks in advance

hi

must admit personally i’ve always replaced the crankshaft bolt with a new one

assume there’s no possibility of picking up a new one from somewhere else

see what the others say regarding this

Gazbo · Jan 12, 2018

kapilamuni said:
Hi, Guys,
Can I reuse the existing crank bolt with some thread locker liquid l?
We are having a long weekend and I'm yet to receive my ordered bolt. I doubt it will reach me today (Friday) and If I can use the existing bolt then I can complete the job by Monday.

Thanks in advance

I wouldn't be worried about re-using the bolt, and as you are going to use some loctite or such upon it I would not tighten it up to the full recommended measure to avoid fatigue failure, though it may be wise to make it reasonably firm in case the clamping strength is required to drive something on the crank behind the pulley. I have in the past re-used crank pulley bolts on Disco Tdi, Toyota V6, and Kia v6 engines before to no detriment, tightened up firm but not hammered up.
As you have a new bolt ordered you can replace the old bolt with the new and tension it up to the correct tension once you have it to hand.

Joss155 · Jan 12, 2018

I wouldn’t reuse personally.

potus · Jan 12, 2018

Personally, I'd be reusing in this instance. Presumably it's not a stretch bolt? it's just whether it has any hidden fatigue which can't be seen visually. Quick check and crack on, can it be replaced afterwards if you are overly concerned?

gstuart · Jan 12, 2018

Joss155 said:
I wouldn’t resue personally.

know there are different views but i’ve also personally never re used crank shaft bolts

mainly , because of that what IF scenario

Joss155 · Jan 12, 2018

potus said:
Personally, Presumably it's not a stretch bolt? ?

As far as I was aware it is. Could OP not go to LR and pick one up. TBH I often go to BMW as it's easier and they have the stuff on the shelf.

wammers · Jan 12, 2018

I would not use Locktite on the bolt. There is no chance of it coming undone at it's loaded torque. Snap yes but come loose never. Locktite on the internal threads may compromise the fitting of a new bolt or removal of a snapped one.

kapilamuni · Jan 12, 2018

Thanks. Then got to wait for the new bolt.

Grrrrrr · Jan 12, 2018

Saint had a crank bolt that had been Loctite'd up and it failed spectacularly on hiim.

Crank bolt - diesel

kapilamuni

Active Member

gstuart

D3 Grandad

Gazbo

Well-Known Member

Joss155

Well-Known Member

potus

Well-Known Member

gstuart

D3 Grandad

Joss155

Well-Known Member

wammers

No longer with us, RIP

kapilamuni

Active Member

Grrrrrr

Technician, Bodgit & Scarper Ltd

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