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Thread: Replacing 101 Landrover Shocks

  1. #1
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    Replacing 101 Landrover Shocks

    For about Two years now one of my rear shocks has been leaking oil.
    This has been no great concern as on a unloaded soft top 101 the rear springs don't move.
    I though it was about time I did some thing about it.
    The problem appears to be standard new 101 Landrover shocks don't appear to be available and they are a truck shock of a different sizing fitted to normal Four wheel drives.
    They are a close match to a Bedford truck which shocks are no longer available for any way.
    On Grey Ghosts travel thread he had new shocks fitted to his hard top 101 and a extra spring leaf.
    He was kind enough to pass on the model numbers of these shocks.
    They were EFS brand which is owned by Carrol springs who make springs and been around for along time and know what they are doing.
    Carrol springs tailor there shocks carefully to different vehicles and spring packages......all very good so far.
    If you were going to match up existing available shocks to a strange vehicle , this is a good start.
    EFS rear shocks are P/N 36-5593....early range rover and county........about $320 a pair
    EFS front shocks are P/N 5548 Nissan GQ----H2J75 troopie landcruiser ....about $360 a pair.
    It is a good start in the fact I could order the shocks in from a local supplier and know there is a reasonable chance they are going to fit at a mid range price.
    Now as was expected the eyes of these shocks are of a lighter duty common Four wheel drive type with bushes to suit and not of a heavier duty truck type as on the 101 landrover.
    I for many years had trouble with the front rubber standard top shock bushes flogging out quickly with off road work as the front axle does all to the off road flexing and the rear does stuff all and the standard front shock and bush retaining set up was with a big split pin which made any sort of preloading on the standard rubber bushes difficult and the only way to take up bush wear was to replace the bushes which had to be done regularly with off road work.
    AJ came to help me solve the problem by providing poly bushes and suggesting threading the top shock bush pins to take a bolt and a washer instead of using the split pin arrangement,
    Pics and some of this process is in the disc brake thread on this site.Disc Brakes
    The mod worked extremely well and no further problems and easier shock fitting and removal and the poly bushes if they get a bit of play can be adjusted up by adding another washer.
    Now I had to rework the mounting set up for the smaller shock bushes.

  2. #2
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    The new shocks were checked against the old ones for extended and contracted lengths and then double checked the compressed bump stop length of the suspension shock pins on the vehicle etc.
    All is good with the new shocks allowing about 25 to 30mm extra downward travel which is better for off road work or if you have a slightly raised suspension springs like grey ghosts 101.
    I have noted and tested the suspension flex on the 101 soft top unloaded and found .
    The front springs flex as much as needed until the shocks on the extended side runs out of travel and the overall flex is brilliant with the compressed side on the bump stop.
    The back is a different story.
    The back flexes very little with no weight in the rear of the vehicle and the shock compression or extended lengths do not come into play or does the rear bump stops.
    Only with a load of one tonne or more will the bump stop or shock extended length come into play.
    The rear springs are designed to work only with a full load and will take easily over loading.
    These new shocks will help me the next time I take on Monkey gum fire trail giving more downward flex on the front and only in the rear if fully loaded.
    front shock replacement 101 Landrover by john smith, on Flickr

  3. #3
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    On the rear the lower standard shock mounting pads were Ok and worked with the new shocks.
    The top I had AJs poly shock mount bushes and a bolt retaining set up.
    I looked at boring out the standard poly bushes that comes with the new shocks to suit the 101 Landrovers bigger mounting pins.

    Standard poly bush and bored out poly bush by john smith, on Flickr

    After fitting I decided it was going to bind up to much if the rear suspension flexed under a full load.
    I looked at the AJ bushes and decided to place them against a grinding wheel and reduce the OD to suit the new shocks and gives some sort of preload adjustability and twisting up of the axle under flex with less binding.
    EFS shock fitted rear 101 Landrover by john smith, on Flickr

  4. #4
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    The Two piece bushes of a 101 are better.
    the pic blow shows the three different bushes.
    The left one is a standard poly bush that comes with the rear top EFS shock bush
    The middle one a is AJ poly bolt up bush to work with the standard shocks.
    The right hand one is standard 101 Landrover rubber bush as per when the vehicle was made and to work with the split pin retaining set up.
    Different shock bushes by john smith, on Flickr

    Below is AJ poly bush ground down and shaped to suit the EFS shock rings.
    Behind is a rubber bush out of one of the front EFS shocks as supplied.
    Modified poly bushes to standard EFS bush by john smith, on Flickr

  5. #5
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    Below is the difference in extended front shocks.
    Extended lenght of new and old shocks front 101 Landrover by john smith, on Flickr

  6. #6
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    Below is the old split pin set up with rubber bushes, the play in the bush to shock mounting ring can just been seen.
    101 front Landrover rubber shock bush by john smith, on Flickr

    Below is a bolt up conversion of a top shock mounting with out the bolt and washer, but with poly bush still in place with a standard 101 shock in place.
    Modified bolt on poly upper front shock bush by john smith, on Flickr

  7. #7
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    Thanks Ron - great information.

    When I got my 101 the top and bottom bushes on the front shocks and the top of the rear shocks all turned to liquid on the trailer back form Newcastle to Canberra.

    Like you I could not find any new bushes locally - car are too small - truck are too big. I ended up at a local supplier of truck parts and they had generic universal nylon bushes for small trucks - a little big on the outside and a little small on the inside - sander on the outside down to size and a ream of the hole on the inside - have worked great ever since.

    I see you have changed the retainer split pin arrangement to a bolt on arrangement - I was still able to retain the split pin but they are a bit of a pain to get in - when I next change mine I will change to the bolt arrangement.

    Thanks for the information.

    Oh - Monkey Gum is a walk in the park for a 101 - last time I did it my airline to the CDL was off so it was not until the end that I realised the CDL was not on.

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1976 Jaguar XJ12C
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  8. #8
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    Same shock mount as the last pic but the poly bushes ground down and shaped to suit the EFS shock.
    The bolt has not been tighten up to compress the poly bushes.
    Modified upper front shock bushes by john smith, on Flickr

    Below is the poly bushes loosely fitted in the EFS shock , testing of size on the bench.
    EFS shocks onto 101 Landrover by john smith, on Flickr

  9. #9
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    The front lower 101 Shock pins do not allow for a bolt retaining modification due to the hollow pin beening much thinner that the top ones.
    The front axle can flex to 40 degrees or more off road and the shock bushes must allow for this.
    The split pin method of shock bush retaining must be used.
    I looked at reusing the standard 101 rubber bushes ground down to suit the new shocks , but the need to get strong compression on the rubber bushes and the likely history of them wearing out I decided differently.
    Below is me fitting the lower rubber bushes with the split pin just fitted.

    Trying to fit rubber shock bush by john smith, on Flickr

    I decided to use a poly bush that came with the rear shocks, bore it out to suit the 101 pins and bore out some steel washers that also came with the EFS rear shocks to take up the side play and ended up with this.
    Lower front poly shock bush fitted. by john smith, on Flickr

  10. #10
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    Hey Ron - in that last pic it looks as if your balls are getting a bit crusty - maybe a sand and polish and a fill of the pits is needed.

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1976 Jaguar XJ12C
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

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