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Thread: Scammell Explorer fixes and workarounds

  1. #61
    Join Date
    Apr 2008
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    East Sussex, UK
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    Default Re: Scammell Explorer fixes and workarounds

    Quote Originally Posted by N.O.S. View Post
    Mike - it has now been sold to a collector in Suffolk, it appears to be in really good order, and the cleanest one I've seen for a long while. Hopefully won't be too long before it is seen out and about again.

    Tony (who feels sure he has bought something Scammell or GMC related from you in the past......... )
    Well I'm glad to see I'm not the only one to sport a non compliant radiator grill!

  2. #62
    Join Date
    Apr 2008
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    North Bucks
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    1,193

    Default Re: Scammell Explorer fixes and workarounds

    Quote Originally Posted by N.O.S. View Post
    Mike - it has now been sold to a collector in Suffolk, it appears to be in really good order, and the cleanest one I've seen for a long while. Hopefully won't be too long before it is seen out and about again.

    Tony (who feels sure he has bought something Scammell or GMC related from you in the past......... )
    Glad it has gone to a good home. There are 2 b/w pics of it on the CCMV site taken soon after I bought it for a staggering 1250 + vat back in 1985 - those were the days. Even got it delivered foc! Noticed it still has the braced Militant 1 mirror arms I knocked up for it.

    Mike

  3. #63
    Join Date
    Oct 2007
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    Aberdeenshire
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    Default Re: Scammell Explorer fixes and workarounds

    Has anyone got anything to say on the subject of stuck walking beams then?

    Steve Adamson.

    We're all here, 'cos we're not all there.

    1951 Scammell Explorer. http://www.hmvf.co.uk/forumvb/showthread.php?t=7130
    1967 AFS Bedford RL GS. http://www.hmvf.co.uk/forumvb/showthread.php?t=13379
    1960 Austin Gipsy G2 M10 Fire Engine.
    1963 Austin Gipsy G2 M10, ex. Police Mobile Column, ground to air comunications.
    1963 Austin Gipsy G2 M10, ex. AFS.
    1965 Austin Gipsy G4 M10, ex. AFS with Brockhouse trailer and CCFW pump.
    1967 Austin Gipsy G4 M15, ex. PMC. x2

  4. #64
    Join Date
    Jul 2007
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    5,314

    Default Re: Scammell Explorer fixes and workarounds

    Quote Originally Posted by croc View Post
    Has anyone got anything to say on the subject of stuck walking beams then?
    Get yer overalls on and yer spanners out!

  5. #65
    Join Date
    Jul 2007
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    5,314

    Default Re: Scammell Explorer fixes and workarounds

    Must admit I don't know what bearings there are in the walking beam - plain bushes or taper rollers or other? Any chance of a drawing so we can offer up some useless remedies?

  6. #66
    catweazle (Banned Member) Guest

    Default Re: Scammell Explorer fixes and workarounds

    In the 8 wheeled Leylands we worked on they were plain bushes with auto oilers.

  7. #67
    Join Date
    Oct 2007
    Location
    Aberdeenshire
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    572

    Default Re: Scammell Explorer fixes and workarounds

    The gearcase is mounted on the axle tube on two points, the bearings being a bronze bush. The outer bush is splash lubricated from the gearcase, the inner one is fitted with two "grease" nipples for oil. My interpretation of the setup is that the gearcase and bush turn relative to the axle. On mine both inner bushes have turned relative to the gearcase, so the oilways no longer line up. On the one that moves, on full articulation, the oilway can be seen through the hole for the grease nipple. (see picture)
    My solution has been to drill new oilways through the bush with the beam level to allow oil to pass to the inside of the bush.
    The general advice I have had from various sources is oil, abuse and heat. I am hoping that once I can give it a decent run and get the whole thing heated up it will start to free off. It will move, but is very tight.

    The questions are;
    How common is this sticky beam problem?
    If the bushes move out of place and the gearcase moves relative to the bush how much damage can it cause?
    How many people have actually taken out the grease nipples to see what is going on behind them?

    Extract from the parts book.




    N.O.S. - boilersuit is normal attire, spanners are always out
    Last edited by croc; 12-05-2008 at 22:05.
    Steve Adamson.

    We're all here, 'cos we're not all there.

    1951 Scammell Explorer. http://www.hmvf.co.uk/forumvb/showthread.php?t=7130
    1967 AFS Bedford RL GS. http://www.hmvf.co.uk/forumvb/showthread.php?t=13379
    1960 Austin Gipsy G2 M10 Fire Engine.
    1963 Austin Gipsy G2 M10, ex. Police Mobile Column, ground to air comunications.
    1963 Austin Gipsy G2 M10, ex. AFS.
    1965 Austin Gipsy G4 M10, ex. AFS with Brockhouse trailer and CCFW pump.
    1967 Austin Gipsy G4 M15, ex. PMC. x2

  8. #68
    Join Date
    Jul 2007
    Posts
    5,314

    Default Re: Scammell Explorer fixes and workarounds

    No doubt they will free off, but if not, don't panic -

    Worst case scenario -

    Once the housing is worn oval, you'll probably have a job to keep any bronze bushes tight. Also if you have to get them made they will be . Possibly shaft will be OK but any play and a new std bush will suffer fast.

    If you are up for a "super bodge", how about this - (never failed me yet!)

    Get new bushes made from a hard NYLON (in this case recommend S grade, the same as heavy truck spring bushes). And only to get made by comparison!

    You may need to do some very careful measuring to get the optimum fit for both housing and shaft, but what happens is the bush will remain a nice press fit in worn housing, the bush simply deforming into worn area whenever load applied rather than break up.

    Also to some extent self lubricating, though we always cut greaseways as original. Greasing will keep grit out and prevent hard particles embedding into nylon and then wearing shaft even more.

    A brilliant company up in Glasgow, specialising in one-off jobs. Will dig their number out today (long time since used them)
    Last edited by N.O.S.; 13-05-2008 at 08:50.

  9. #69
    Join Date
    Apr 2008
    Location
    North Bucks
    Posts
    1,193

    Default Re: Scammell Explorer fixes and workarounds

    The questions are;
    How common is this sticky beam problem?
    >Quite common, I have seen a few.

    If the bushes move out of place and the gearcase moves relative to the bush how much damage can it cause?
    >From memory, the beam is located on the axle by collars either side of the inner pivot, so the bush should not move far axially. However as you said above, if the bush rotates within the beam it will obtruct the flow of lubricant. I would not suggest using heat on the beam as all that will do is release the grip on the bush.

    How many people have actually taken out the grease nipples to see what is going on behind them?
    >Mine would not accept any grease or oil even at crazy pressures. I removed the nipples and found a mass of dried up lithium type grease which I eventually managed to shift using Rocol penetrating oil. I used an MS type grease and never had any more problems.

    This is what they should look like:
    http://ccmv.fotopic.net/p43438066.html

  10. #70
    Join Date
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    London
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    Default Re: Scammell Explorer fixes and workarounds

    Hello everyone , I'm hoping someone has a scrap front axle that is being used for spares as I'm after a locking bolt from the nearside front hub assembly as someone in the past damaged mine ! Anyone familiar with my Scammell will know its not urgent ! But it would be nice to fit a decent one for peace of mind ! I'm happy to buy it of course and pay any postage costs ! Andy F . P.S. it is only the small bolt to the right of the photo I'm after !
    I love Deep Bronze Green !

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