Back from our trip of North Americas and the dust has settled. Time now to provide an update of what worked and more importantly what didn't work so well. 35000 miles of which 7000 on dirt and plenty of pot holes. Coped with temps up to 49C without issue.
The good news is that there were no major mechanical failures - just a sticky rear brake slide that caused the pads on that wheel to wear a bit faster......in fact down to the metal....oops. High pad wear was missed by Toyota Service centre in the US.
The major items for attention are/were:
Insufficient leisure battery capacity for running fridge/ancils in 40C desert heat. 2nd 100Ah leisure (3rd battery on vehicle) added
Insufficient solar panel capacity to maintain leisure battery charge in hot weather and long camp periods. Extra 100W added to 80W that we went with
Too much background current running the battery down when camped. Put power switch onto iPod/Digital radio interface that sometimes stays powered. Add switch to USB charging circuits to isolate from camp power circuits when not in use
Roof tent optimisation - add snap-buckles (like on back packs) instead of the cam style /webbing grips - easier and quicker to tighten down the RTT cover straps. Also added Velcro pads to grip the RTT mattress to stop it moving when getting the tent out and jamming the hinge.
DRL's - eventually a 1/3rd of the LEDs on each burned out after a year of more or less constant use. DRL voltage sensing circuits (auto-on) also troublesome and sometimes didn't put the lights on. Entire system removed as not required for Africa
Cold starting air intake heater reinstated as got fed up with embarrassing puff of blue smoke on campsites
Rear diff lock actuator corroded and failed - replaced
Knarled ancillary belt adjusting bolt replaced
Precautionary replacements due to wear and tear:
NSF CV and drive flange - some play
Worn lower control arm ball joint - the only one left to do now done
rear anti-roll bar link bushes replaced
Partial replacement of ATF
Replaced all disks as worn down to limit or close to limit (and 1 rear deeply scored and one had a slight vibration on braking)
Grumbly front wheel bearings replaced
Normal Service items plus Valve clearances adjusted.
So pretty pleased with all that on the whole. We have been ultra-cautious with worn items as we don't want to break down in the Kalahari, or be surrounded by lions
