Originally Posted by
Buster15
And a number of cleaning techniques were tried to not have to remove the RHFCU.
I worked Tonka First Line for a while (ten years OMG !!!)
The Dry FCU had to come off the replace the Hot Shot so at every change the Hot Shot was replaced as a precaution "whada you mean you didn't replace the HotSho !!!!!! - K@#B"
Then there was the squirt a syringe full of Avtur to disolve the carbon build up method or the Landrover speedo cable dipped in OM15 (hydraulic oil the same as Redex apparently) and pushed up to be spun and umpteen thousand RPM with a Windy Drill.
Never much success.
I sugested LIX (?) as used by the Phatoom Phleet but I don't think there was any left by then, all gone like AVPIN.
In the end I understand a baffle device was developed by RR and was fitted to the tube that had a convienient connection and the Engine run up and reverse pressure flow cleaned it out.
H