HomeForumsTechnical – GeneralDrivelineTrimatic No forward gears

This topic contains 17 replies, has 3 voices, and was last updated by Profile photo of IJ. IJ. 1 year, 8 months ago.

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  • #27645
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    Hi all if any one can shed some light on this for me , vh commodore 83 202 trimatic got tyres done today and while the guy was test driving before alignment 100m down the road a bang then lost all forward gears only has reverse  is there something I can do to confirm it stuffed

    • This topic was modified 1 year, 9 months ago by Profile photo of Judge1 Frazer Judge1 Frazer.
    #27647
    Profile photo of IJ.
    IJ.
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    Possible cracked Servo piston Frazer..

     

    #27648
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    Thanks Ian is it repairable expensive I am not an auto guy so I’ll have get someone to do it

    going to take pan off today and see what I see

    #27649
    Profile photo of IJ.
    IJ.
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    Drop the pan, undo the 4 bolts from the round cover, if it hasn’t gouged up the case it’s a cheap repair.

    #27654
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    Drop the pan, undo the 4 bolts from the round cover, if it hasn’t gouged up the case it’s a cheap repair.

    Hi Ian , removed the pan and cover today and all the bits came out have added photos , can this be repaired in the car or is it trans out  also would have bits gone through the trans , cheers Frazer

    20181216_160022 by Frazer Russell[/url], on Flickr

    20181216_160015 by Frazer Russell[/url], on Flickr

    20181216_155956 by Frazer Russell[/url], on Flickr

    20181216_155950 by Frazer Russell[/url], on Flickr

    20181216_155945 by Frazer Russell[/url], on Flickr

    20181216_155940 by Frazer Russell[/url], on Flickr

     

    #27659
    Profile photo of IJ.
    IJ.
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    The rest of the piston should pull out, I believe there’s an upgrade one available, I’d clean the shrapnel out install the new parts and give it a crack, filter screen should have caught the bulk of it.

    One of these>>

    https://www.ebay.com.au/itm/Holden-Trimatic-V8-Billet-Twin-Ring-Servo-Piston/161786024456?hash=item25ab32d208:g:1cYAAOxyuOtRZn61:rk:1:pf:0

    #27660
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    The rest of the piston should pull out, I believe there’s an upgrade one available, I’d clean the shrapnel out install the new parts and give it a crack, filter screen should have caught the bulk of it. One of these>> https://www.ebay.com.au/itm/Holden-Trimatic-V8-Billet-Twin-Ring-Servo-Piston/161786024456?hash=item25ab32d208:g:1cYAAOxyuOtRZn61:rk:1:pf:0

    Thanks Ian I assume it does not mater 6 cylinder not a v8 also do I have to take the plate off to get snap ring out

    I appreciate your help

    #27662
    Profile photo of IJ.
    IJ.
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    Which snap ring?

    Do you mean the ring around the broken piston?

    I’d drop the valve body and plate anyway to make sure there’s no shrapnel in there hiding, been a long long time since I’ve played in a Trimatic so all a bit foggy sorry.

    #27663
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    Thanks Ian I have found a good video on you tube the snap ring or retaining clip is to hole piston in

    #27671
    Profile photo of IJ.
    IJ.
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    Good move Frazer, likely to get up to date info that way as well, as I said been a long time since I played with one!

    #27716
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    Hi all found a second hand piston had to pull it out of another parts box my neighbour had just waiting on gaskets now

    20181230_175040 by Frazer Russell[/url], on Flickr

    • This reply was modified 1 year, 8 months ago by Profile photo of Judge1 Frazer Judge1 Frazer.
    #27725
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    piston all in had to make a tool to get the old one out and to install in the my trans

    20181231_144800 by Frazer Russell[/url], on Flickr

    20181231_144809 by Frazer Russell[/url], on Flickr

    20181231_145006 by Frazer Russell[/url], on Flickr

    20181231_145017 by Frazer Russell[/url], on Flickr

    • This reply was modified 1 year, 8 months ago by Profile photo of Judge1 Frazer Judge1 Frazer.
    #27741
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    car is all alive again have forwards gears now cheers for your help Ian

    #27742
    Profile photo of IJ.
    IJ.
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    Very welcome Frazer, happy to help when I can!

    #27755
    Profile photo of VRSenator065
    VRSenator065
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    • VR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project)

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    Wow, hadn’t kept track of this thread, nice work boys, that’s why forums are good.  Nice work IJ  and Fraser I looovvve a special tool :)

    #27756
    Profile photo of Judge1 Frazer
    Judge1 Frazer
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    Wow, hadn’t kept track of this thread, nice work boys, that’s why forums are good. Nice work IJ and Fraser I looovvve a special tool

    why buy it if you can make it “right” :good:   :good:

    #27762
    Profile photo of VRSenator065
    VRSenator065
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    • VR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project)

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    Absolutely. half the fun I think!!

    #27764
    Profile photo of IJ.
    IJ.
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    It’s interesting as you get older trying to remember what you made them for…. :yes:

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