I was sure it could be done with just radio out but turns out my old car where it could had the radio insert taken out, this one have all the original bits so it was done through the Hevac unit.
Will let the photos do most of the talking, read/follow Rave for coolant refill.
One thing there isn't a photo of is me blowing into the coolant tank after draining to empty heater core.
No dash or speedo out, only the bits either side to get the Hevac out and bits under steering column.
One hole for hidden screw is all you need, i.e. very little dissembling and no cutting ducts etc.
All in all 2 hours taking it easy. NB: You don't have to drain if you got hose clamps but I find it easy and had a new plug to fit.
First invest in a very long screw driver & O-rings, take out Hevac unit and underside of steering column, look in RAVE if in doubt of anything.
How the screw driver are inserted
Use a spacer for room to work, and notice end of screw driver
Close up of screw driver, if you tap it a fair bit before trying any screw action chances of getting it loose are increased dramatically.
New metal plug for cooler, replaces the plastic one (Not essential)
Drain into a clean bucket if you intend to re-use coolant
Tape up the screw driver so screw stays in place whilst changing O-rings
Another photo of screw
New & old O-rings, old ones usually cracked and brittle/gone hard
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