Olsen's Tours and Training Blog

I am often asked how does my vehicle line up for tour after tour of the roughest tracks in Australia, day after day, week after week, year after year. – the answer $$$$$$ and time spent on maintenance.

In the last few weeks I have been working non-stop on major and minor maintenance issues, some designed to ensure reliability, others designed to make my five months every year in the cabin more comfortable.

On the major maintenance side of things, I began with new CV shafts, a new new stub axle for the left wheel, new front wheel bearings and new freewheeling hubs.

Other items included the fuel sender unit. Last year at the end of the touring season, my main fuel gauge stopped reading, which stops the auxiliary tank transfer from being selected- not a good thing in remote areas. It is a pretty horrible job to drop the main tank (145L) so I’ve put it off until now. I obtained a new sender from Nissan for a reasonable price and I’ve held on to it waiting for an opportunity to do the job. My neighbour offered me the use of his 900kg gearbox jack which made matters much easier. Once I’d removed the tank, I removed the old sender and fitted the new one. See if you can spot the differences.

For some time I’ve also had, on occasions a horrible noise from the air conditioner belt which is usually alleviated in the bush by spraying the idler with lanolin spray. I noted that the idler was quite shiny and worn so elected to replace it in this round of maintenance. Interestingly it seemed to be rotating quite OK when I removed it, but the shiny marks on it indicated it wasn’t always doing so.

After many years in red dust country, the engine bay was looking quite dirty with red stains, so I elected to give the under bonnet area a good clean. I also removed the radiator and cleaned all of the grass seeds from it.

I had recently replaced the damaged headlights and corner lights with new units, so now took the opportunity to upgrade to High Intensity Discharge (HID) globes. I had a few issues with this installation including low beam being high beam and high beam being low beam, but managed to get that sorted, no thanks to the chinese instructions.

Once underway I elected to refurbish the cabin. since I spend almost half of my awake life in it. I first of all cleaned the entire cain, then removed everything – seats, carpet, console and dash. After seven years and nearly 300,000 of Australia’s worst kilometres it was time to spruce up the old girl. I found that Townsville Wholesale Paints can supply paint, suitable for vinyl and plastic trim, colour matched and delivered in aerosol cans. I took some trim in to match, and I must say I am very happy with the matching job.

The dash resprayed

The dash resprayed

Communications are an essential part of my job, and my vehicle reflects that. While many choose Sat Phones, here in north queensland, in the wet season, under heavy cloud cover, sat phones are useless. I’ve been using HF radio since I was 13 years old- some 37 years- and that is the medium I trust most. My vehicle is fitted with two HF radios, one VHF radio and three UHF radios, it is tracked 24 hours per day on HF radio, VHF radio and via satellite system known as SPOT. I have access to a range of HF frequencies including Royal Flying Doctor, VKS737, RadTel and Amateur Radio as well as Citizens Band 27 Mhz CB. I also have access to some Amateur VHF and UHF frequencies as well as Citizens Band UHF.

After many long seasons on rough roads, it was time to check all of the radio and antenna installations. First all of the antennas and feed lines were checked for faults, and all but one required some maintenance. The autotune HF antenna was not tuning below 4 MHz and also needed some attention. I tidied up the installation of the two HF radios and the APRS tracker, tidied up the wiring and installation of the UHF radios. I also relocated the Icom IC706 control head to the centre of the dash and relocated the Barrett 950 loudspeaker.

Barrett 950 and Icom IC706 on back of cabin

TinyTrack4 for Automated Position Reporting System (APRS)

The original Nissan freewheeling hubs on my Patrol were replaced a few years ago when they became a bit worn (fairly common). I replaced them with AVM hubs on the basis that the OEM hubs were 4 times the price of the AVM units. My Patrol is a bit like Grandpa’s axe, you know the one that has been the best axe grandpa ever had, and he has had it 60 years. It has been a great axe – sure it has had three heads and five handles- but bloody hell it has been a great axe.

Anyway I digress- I’ve never been very happy with the AVM hubs, they seemed to suffer quite a bit of wear, particularly the left one, and those silly little torx screws seize and are therefore difficult to service on the Canning Stock Route or some other track where invariably they or the wheel bearings seem to require service. Getting the hub off when the screws sieze is difficult as the bolts require allen keys, and the caps, held on by those silly screws are in the way and this means the allen keys cannot be inserted squarely into the bolt head so must be round ended keys.

Difficult access when the torx screws won't come out

All of this is too complicated for a vehicle that has the toughest life and may require service in remote areas. My Patrol requires a great deal of maintenance to the wheel bearings, running as it does full time in rough, dusty and sometime very wet terrain. Running at full weight all the time on this terrain means that I find 15,000k is about as far as I can go without a repack of the wheel bearings- so those hubs had to go.

I found the OEM automatic hubs, such as are fitted to the wagon, for sale on ebay for a reasonable price, so I thought I’d give them a go. I’ve had them before on my wagons, and as long as I manually locked them in the real tough stuff they seemed to be OK. The beauty of them is they are very easy to remove.

After purchasing these hubs, I began the task of fitting them. I had planned to fit new wheel bearings and new CV shafts at the same time but elected to fit the hubs first and give them a try before I set to with the major work. I fitted them and found the left one a tight fit so investigated further. I removed both hubs and inspected the stub axle assemblies to see why one hub was not fitting well, thinking it would give me clues to the wear problem. It turns out that one stub axle is completely different to the other. It is a long story that I’ll save for another day, but a few years back, a hastily purchased and fitted stub axle delivered by my lovely wife to me on the side of a track in the middle of nowhere, may well have been for a GQ Patrol not a GU.

The GU hubs have four little notches in the end of the stub axle, the GQ has none. These notches align with four tabs on the automatic hubs, they cannot be fitted properly without them. Additionally I found that my axles should have, but never have had (since I’ve owned the car) circlips fitted to the CV shafts in the outboard position for manual hubs, and to the inboard position for automatic hubs, without these, the CV shaft can move outwards, wearing the hub.

GU Hub with four notches

GQ Hub with no notches

Olsen’s 4WD Tours and Training
www.djolsen.com
Canning Stock Route Adventure 2012

The wet season has meant a late start to our touring season, and a tough year financially, but with only a few weeks to go before we start our touring season, I am catching up on some overdue maintenance. There are some major things to be done, but I can’t begin those until Justine’s car returns from the mechanic – it has had a clutch replacement.

So today I spent some time fixing things that wouldn’t require the Patrol to be un-driveable.

Both headlights were in need of replacement having been damaged by rocks, and also being in pretty poor shape overall with the adjustment seized. The corner lights were also quite crazed and coloured and the retainer fittings were no longer holding them in place- oh you have to love the corrugations on the Canning Stock Route!

I began by removing the grill and then the corner lights, and then the headlights. I purchased corner lights off ebay at $98 a pair, and headlights from Cheapa Auto Spares at $500 a pair. Nissan wanted over $1000 a pair for the headlights alone.

Fitting the headlights was a breeze but in doing so, I noticed the moulding panels under the headlights were in need of replacement. Nissan wanted over $390 for these little pieces of plastic. I found some on the net for $88 a pair and ordered them, so they’ll be a few days away.

Headlights come well packaged from Cheapa Auto Spares

Brand new headlight

Brand new corner light

Old headlight

Old corner light