Crankin' bolt

[type53 at gmail.com (Drew Mac)]

The 1.9 IDI diesels are prone to crank bolt loosening as well.  Rumour
on the street is that a redisigned harmonic balancer on the crank
pulley resolved the issue.  However,  a number of people I know who do
timing belts on these engines have used an impact approach, and two
have had the bolt snap off at the head at some point down the road.

I'll be going through this on a 1.9  in a few weeks, and plan to red
loctite a new bolt on clean threads, and torque per the Bentley.

Drew


On Wed, 17 Nov 2004 20:40:30 -0600, Don Walter <dswalterwi@gmail.com> wrote:
> No I wasn't worried Ben.  The Bently talks about 2 different types of
> bolts.  A hex bolt and a 12-point (the stretch type).  All bolts do
> stretch minimally but you don't want to reach the yield strength or
> you'll get a failure.
> 
> Bently says:
> Hex bolt (with washer) 150 Nm (111 ft lb) thats quite a lot
> 12-point bolt (without washer) 90 Nm (66 ft lb) plus 1/4 turn
> 
> I could see using an impact on the hex bolt and cranking until it
> doesn't move but I would be a bit hesitant on doing that with the
> 12-point.
> 
> I just bought a brand new 12-point from Adirondack and was told the
> other is no longer available.  Which kind of bolts is everyone talking
> about?
> 
> 
> 
> 
> On Wed, 17 Nov 2004 09:35:58 -0800 (PST), Ben Harder <vwtype53@yahoo.com> wrote:
> > Don't worry Don... this wasn't on your car... or engine.  :)
> >
> > Did this make you worried?  I imagine it would if this was on
> > a stretch bolt.  But really, all bolts stretch somewhat, right?
> > Just some are of a material that will stretch more than others.
> >
> > So what *is* the real solution to the crank bolt problem, anyhow?
> > I think following the Bently torque spec is not enough...
> >
> > Ben
> >
> >
> >
> >
> > --- Don Walter <dswalterwi@gmail.com> wrote:
> >
> > > You did that to a Stretch Bolt???????  Or do you have the non Stretch type.
> > >
> > > Don
> > >
> > >
> > > On Tue, 16 Nov 2004 20:00:55 -0800 (PST), Ben Harder <vwtype53@yahoo.com>
> > > wrote:
> > > > Maybe not the best idea... but I used a good amount of Red LocTite
> > > > and immediately set my 400 ft-lb impact gun to work.  I hit the bolt
> > > > for a good 10 seconds, before resting assured that the bolt was not
> > > > ever coming off again.  ;)
> > > >
> > > > Just my (not-so-technical) solution to that nastly little bolt...
> > > >
> > > > Ben
> > > >
> > > >
> > > >
> > > >
> > > > --- JoshuaA.Conner@VerizonWireless.com wrote:
> > > >
> > > > > In light of my second crankshaft pulley replacement job i am curious if
> > > any
> > > > > one has an idea of what type of threadlocker I should use on my new
> > > > > crankshaft bolt(it did not come with any pre-applied from the dealer).
> > > On
> > > > > the last bolt I used loc-tite red and my concern is that the red sets up
> > > so
> > > > > fast that I may not be actually torqueing the bolt enough.  I need
> > > something
> > > > > that will allow me to gronk (definetly not in the Queens english) the
> > > hell
> > > > > out of the bolt and stay there.
> > > > >
> > > > > Joshua Conner
> > > > > Coordinator
> > > > > Business Support Center
> > > > > Verizon Wireless
> > > > > 1(866) 837-0022 Ext. 6165
> > > > > Fax 1 (614) 560-2511
> > > > >
> > > > >
> > > > >
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> > >
> > > --
> > > Don Walter - Waukesha, WI
> > > 1986 1.8 16V Black Scirocco
> > > 1986 2L 16V Toronado Red Scirocco (under repair)
> > > 1988 1.8 16V Toronado Red Scirocco (sold on 3/29/04)
> > > 1984 1.8 8V Pewter Scirocco (sold years ago)
> > > 1971 Karman Ghia (sold)
> > > 1969 Karman Ghia (sold)
> > > 1969 Beetle (sold)
> > >
> >
> >
> > __________________________________
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> >
> >
> 
> --
> Don Walter - Waukesha, WI
> 1986 1.8 16V Black Scirocco
> 1986 2L 16V Toronado Red Scirocco (under repair)
> 1988 1.8 16V Toronado Red Scirocco (sold on 3/29/04)
> 1984 1.8 8V Pewter Scirocco (sold years ago)
> 1971 Karman Ghia (sold)
> 1969 Karman Ghia (sold)
> 1969 Beetle (sold)
> 
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