Defender TD5 Wastegate Actuator

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Defender54

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49
Location
Dorset
Hello all - in order to try to cure a whistle on over-run, I freed up the wastegate and fitted a new actuator (from LR Centre). The pressure feed pipe on the new actuator was somewhat larger than the original and getting the rubber tube back on required some bad language but my question is actually about setting up the actuator. The distance between the face of the original actuator (not the mounting plate) and the centre of the pivot on the wastegate was 10.25cm but it had to be loosened off quite a bit before the arm would release from the pivot. I set the distance the same on the new actuator but the result is that the wastegate is hard over on the 'closed' stop - 10.25cm is therefore the absolute minimum arm length. I know that these are tweaked sometimes so my question is, does 10.25cm sound right and is it correct that the gate should be hard on the closed stop with the actuator in its resting position? Thanks in advance.
 
Hello all - in order to try to cure a whistle on over-run, I freed up the wastegate and fitted a new actuator (from LR Centre). The pressure feed pipe on the new actuator was somewhat larger than the original and getting the rubber tube back on required some bad language but my question is actually about setting up the actuator. The distance between the face of the original actuator (not the mounting plate) and the centre of the pivot on the wastegate was 10.25cm but it had to be loosened off quite a bit before the arm would release from the pivot. I set the distance the same on the new actuator but the result is that the wastegate is hard over on the 'closed' stop - 10.25cm is therefore the absolute minimum arm length. I know that these are tweaked sometimes so my question is, does 10.25cm sound right and is it correct that the gate should be hard on the closed stop with the actuator in its resting position? Thanks in advance.

I think by standard it should have 14 threads showing on the rod arm. Some people tweak them up a bit to get more boost but 11-14 threads would be the usual range
 
Thanks Jim - the replacement has a different distribution of plan shaft to threads than the original, but I'll set the old one up as you suggest and measure it.
 
Thanks Jim - the replacement has a different distribution of plan shaft to threads than the original, but I'll set the old one up as you suggest and measure it.

If you get your hands on a nanocom you can read the pressure value and set it correctly.

Cheers
 
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