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Thread: Steering box 101

  1. #1
    Join Date
    Jan 2008
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    Nowra NSW
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    Steering box 101

    The things you learn.
    The steering on my 101 used to be nice and play free.
    It steered very well on the highway at speed and accurate.
    The only problems with the steering was a loose pitman arm nut when I first purchased the vehicle.
    Fitting all steering ball joints with grease nipples was found to be a improvement in slightly reducing steering effort.
    Over the last Two years my 101 has been getting excessive play in the steering box which would not adjust out.
    The pit man arm was getting some side to side movement.
    This normally indicates pitman arm bush wear.
    On my last long trip the steering was getting dangerous......the steering box needed to come out.
    AJ was rung for parts.
    The steering column top ball race just below the steering wheel and the lowest ball race cup is available as well as the balls for the recirculating ball worn........all matching up with series three Landrover or off the shelf at the bearing shop.

  2. #2
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    I pulled my steering box down.
    The pitman arm bush was removed and little wear found.
    The pitman arm bush is not available anywhere.
    The top of the steering box where the column bolts on was found cracked.( in four places and extensively)
    The lower steering box cup found in poor condition , but that was OK as the series three Landrover item fits.
    The worm and recirculating balls all in good condition.
    The top race face on the worn shaft was pitted, but the non available cup was OK.


  3. #3
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    Nov 2009
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    Western Victoria
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    Just saw a NOS 101 steering box on ebay last week.

  4. #4
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    Nowra NSW
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    The top race face on the worm shaft has been cleaned up and luckily the hardening is thick to allow this.
    AJ states the top race cup usually cracks or just wears.
    Lack of lube being the top steering box bearing would be one reason and the other is the top of the steering box opening up and enlargeing and cracking like my steering box has.
    The pic below shows the cup in the housing and the cup is loose and not well supported.

    Below is a pic of the steering worm top race surface mostly cleaned up.

  5. #5
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    I looked at all options for the pitman arm bush........nothing was going to do the job and the alloy steering box housing is very thin not allowing much in the way of options to machine to a different , but available size.
    So as last resort a oversize steel bush was made up and pressed into place.

    It was found the true problem was the not the bush been worn, but the alloy housing distorting and a elongated bush hole.
    The 101 pitman arm is very long and the slightest wear in the pitman arm bush becomes a problem.

    Note the inner part of the pitman arm bush is the steering box housing itself and is whisker thin and will not allow machining for a full length replacement bush.

  6. #6
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    Jan 2008
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    A plate has been made up to strengthen the top bearing cup area of the steering box.
    TIG welding it into place should shrink the hole the cup sits in and support it much better and provide more meat around it to stop any possible cracking up of the cup though being loose in the steering box housing.



  7. #7
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    Below some more general pics.




    The recirculating ball nut has only One pass though the back of it instead of the normal Two.
    The worm shaft is friction welded in Two places and is not of a very strong small diameter.
    This steering box is suitable for use on something like a Mini Minor and nothing bigger.
    After being so well sized and built so far and reliable ( the 101)I am disappointed landrover would use this rubbish Burman steering box on something with 900x16 tyres without power steering and with a 1.5 tonne payload with forward control weight bias.
    I can only guess it was to help get the vehicle weight down for its air transportability spec.

  8. #8
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    In another thread on this site someone was looking at using electric power steering assistance though the standard steering box.
    It is Not the way to go............the standard steering box will not take the extra strain over time.
    AJ has a power steering conversion in the pipe line using a non standard steering box and by passing the relay arms and bearings in the steering.
    It would be the way to go or doing a big mod of the chassis and install a disco steering box.( both options could need engineering certs to be fully legal.)
    I plan to raise the level of the steering box oil filler pipe by extending it with the aim of increasing the steering box oil level height to ensure the top steering box bearing is always fully lubed.
    I will report later and let you know how it turns out with the strengthen standard box.

  9. #9
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    very interesting, why don't you put a nipple and a bleed hole and fill the box with moreys grease instead of oil ??

  10. #10
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    It was already running Moreys thick oil stabilizer........ie extremely thick oil to slow up the oil leak from the pitman arm shaft as the play in the shaft was causing a slow oil leak and the oil seal for the shaft is only a single O ring.
    There is no bleeder hole other than the steering column tube.
    The thick oil will not solve the housing cracks and grease will not lubricate the recirculating nut balls correctly.

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