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Big Dog
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Posts posted by roadusercharges

  1. post-51-0-95604500-1357972433_thumb.jpgpost-51-0-78415500-1357972497_thumb.jpg

    the smoke is the fire heading towards our house and the boys are on the hosereel on the other side, the last one is dealing to the hotspots,

    we put about 12000 litres through the mack, filling up from a water race 1 km away,about 200 firfighters were on scene, but we were on our own until the helicopters spotted the scrub burning towrds the house, why own a jetski when you can buy a mack

  2. This mack has joined the ranks of the National Toy and Transport museum at Wanaka, New Zealand.

    Still in running condition, it is one of 8 4x4s that were built in the 1974-76 for the Ministry of Transport Crash Fire Service.

    it has a 375 hp V8 engine and 10 speed gearbox, behind the cab is a Cat 3208 driving the Waterous fire pump, 7000 litres of water is carried along with AFFF foam and BCF chemical cylinders.


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  3. I bought my superliner around 2003, did a gear oil change and the 2 end parts of a circlip came out the bung, luvly. last month we lost the use of high range, it also was leaking oil from the top somewhere and the drive yoke came loose twice on us in the last year. so out it comes, gearbox has never been removed since birth in 1986, external oil pipe at top was loose, and nearly pumped out the oil on the road. the selecter fork had broken its casting, and the remaining circlip part was lying in the bottom of the casing, it had come adrift and the air ram was over selecting , hence putting extra presure on the fork, a couple of bearings had lost there clearances, a 3 peice cluster was really worn on the mating faces , and the reason it jumped out of gear on a bumpy road, and worst of all the front input shaft had worn considerably where the teflon seal locates.

    bad news, new front shaft $7k ex USA, bearing kit, cluster,selecter, machine face of yoke, Parts $11k, labour $ 3k, and the clutch had worn the flywheel faces,

    Makes for one very expensive rebuild.

    Trouble is , that 12 speeds have rarely given any problems and the newer mechanics have never had to strip one, parts are no longer sitting collecting dust.

    picked up a second box for $3k, but its cluster is worn also, and a selector rod is broken.

    If I had known what I was infor, I would have dropped a Roadranger 18 speed in and modified the driveshaft,

    the joy of owning a superdog

  4. Come over to New Zealand and cop the fresh air and open spaces, no parking lots as there are only 3 truck stops for 3 million people, only inconsiderate newbies and long term operators ready to lend a hand AND only a 70 hr max working week.

  5. post-51-0-36095200-1339581546_thumb.jpgpost-51-0-54493200-1339581564_thumb.jpgThats the only one i took, got engrosse d in talking to the owner and the mods it had, willl post some next week from my cobbers camera. the 375 motor was availible here in nz back in the late 70s,there are only a handful left running these days, and this was one of them, the block has had some gallerys blocked off and some new ones created, next outing is at taupo raceway in April, NZ vs Australia, there is also a Mack Vision running a tricked up 470 motor as well, which has been midmounted, the cab has hinges on the rear so that it can layback on the turntable, to gain access to the engine.

    It runs a 52ooolb diff from an English Foden

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