Viscous

[Reads90]

Ok
Need help
What is the trick to getting a viscous 3.9v8
been trying last night and gave up.
Seen it done with an air chisel in seconds before , but that was when a company in the Uk changed the head gasket in my 200TDi winch challenge truck in 30 mins (real F1 pit style)

[muddymech]

u trying to remove it?
you rembered its a left hand thread?
seen a car mechanic just take a chisel and big hammer drive the nut around, you need to lock it in place, land rover have a special tool but i imagine some well placed spanners/screw drivers would work.
have you got offset spanner that helps think they are avaliable from the likes of repco.

[Reads90]

u trying to remove it?
you rembered its a left hand thread?
seen a car mechanic just take a chisel and big hammer drive the nut around, you need to lock it in place, land rover have a special tool but i imagine some well placed spanners/screw drivers would work.
have you got offset spanner that helps think they are avaliable from the likes of repco.


Yeah knew the left hand thread bit but would still not budge

[ladas]

Were the 3.5's different to the 3.9/4.0 - which re RH threads ?

[Reads90]

Were the 3.5's different to the 3.9/4.0 - which re RH threads ?

Well its for a 3.9 and looking at the new pump it looks like a rh thread.

[Utemad]

I'm pretty sure my 3.9 was a RH thread (1994 Disco).

My nut was bigger than other have said too. It was a 36mm or there abouts.

[Reads90]

I'm pretty sure my 3.9 was a RH thread (1994 Disco).

My nut was bigger than other have said too. It was a 36mm or there abouts.


Yeah that would be about the same as mine. My biggest spanner i have is 32mm and that did not fit

[ladas]

According to RAVE, both the 3.9 / 4.0 they are both a RH thread.

[PhilipA]

I can assure you that a 3.9 with V belts is LH thread.
Looking from the front of the car , you hit a large spanner with a lump hammer in a clockwise direction towards the passenger side.
So if its v belts hit that way and it should loosen
Regards Philip A

[ladas]

I have checked RAVE for the D1, D2, 300tdi, TD5, Defender

The D1 and D2 V8, according to RAVE have RH thread, the Defender 300 tdi - RAVE states is a LH thread.

On the TD5 and V8 for the Defender RAVE doesn't say LH or RH.

See attached.........

[Milton477]

I made a spanner out of a piece of 50mm wide flat bar. To stop the pulley turning, a Stilson/monkey/pipe wrench hooked over the pulley (90deg from the way you would expect to use it) & a small piece of timber to protect the pulley against the jaws.

Good luck

[Reads90]

I can assure you that a 3.9 with V belts is LH thread.
Looking from the front of the car , you hit a large spanner with a lump hammer in a clockwise direction towards the passenger side.
So if its v belts hit that way and it should loosen
Regards Philip A


Ahh but mine does not have a V belt but a serpentine belt