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4WD40

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  1. This thread is getting a bit old, but I have been away for a couple of months and haven't been able to reply up til now.

    Yes my vehicle is fitted with a Toyota LandCruiser FJ/HJ 60 power steering box that fits to the outside of the chassis rail and does away with the need to butcher the chassis in any way. Aside from my own truck I have performed similar conversions on 3 other rigs. Vehicles with standard width series 2 or 3 axles require wheel rims with greater positive offset such as forward control or 1 ton rims to provide clearance between the tyre and steering box on full articulation at full lock. The way I mount the box to the chassis is to cut a piece of 1/2'' thick steel plate to the same profile as the chassis dumb iron but 2'' deeper. I drill four 1/2'' diameter holes at each corner of the mounting plate and clamp the plate to the dumb iron with a 1/2''unf x 4''long bolt and nut through each hole above and below the top and bottom of the box section and through 2 pieces of 2''x1''structural steel channel on the inside of the dumb iron. The bolts pass through 3'' long anticrush tubes between the steering box mounting plate and the channel pieces. This method does away with the need to drill holes and weld crush tubes in the dumb iron itself, and spreads the steering loads over a much larger area of the chassis rail . To attach the steering box to the mounting plate I drill the 4 steering box mounting flange holes into the plate and then plunge a countersinking drill into the backside (chassis side) of the holes and fasten the box to the plate with 4 1/2'' UNC countersunk Unbrako bolts and nuts. The steering column and shaft is a hybrid of series column and wheel, cut away series steering box, to retain the column/firewall support, and a combination of RangeRover and LandCruiser steering shaft universal joints.

    As it happens, one of the vehicles ,a series3 swb I converted has been left with me for a couple of weeks to have some other work done. This truck also has a coil spring front suspension conversion with RangeRover axles using the same '' clamp on'' mounting system that has just gone through engineering approval. The engineer stated that in light of Rovers usage of thin steel for chassis construction, and after studying this mounting system he will never entertain the more common weld on conversions again.

    If I get an opportunity I will take some photos of the power steering and coil conversion and post it here if anyone is interested.

    Bill.

    Hi Bill,

    I'm doing the conversion with the hj60 box as you described. What did you use for the relay rod to connect to the pitman arm ?

    Any photos ?

    Thanks,

    Glen ( Sydney )

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