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Thread: 5th gear went Pop

  1. #31
    Legendary dom14's Avatar
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    Quote Originally Posted by themage21 View Post
    Mine is a '00 GU - part of the bunch that had the crappy 5th gear from factory. It had towed camper trailers in the previous owners usage, not sure what it did in owners before then. It lasted 260k - not bad for a second rate part. But if you have to take out the gbox one way or another, I'd always vote reco, unless you know that the replacement box is from outside of the affected year range.

    Additives aren't going to help, because it's not a heat/wear thing, the splines actually tear and round over from mechanical overload/fatigue. I've got my old layshaft and gear and you can see where the shoddy gear never engaged with the end of the spline. Outside of that, the shaft and gears all look like they're brand new, because of regular oil changes.

    It would be great if you can post a picture of that here.

    What is time period the bad 5th gear was installed into the GU gearbox?
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  3. #32
    Legendary dom14's Avatar
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    Quote Originally Posted by sooty_10 View Post
    I believe it was a problem up till some stage on '02. From all my reading you are safe of the box is from an '03 or up. Mine was an '01.
    Does that include the GQs RB30 & TB42 boxes as well?!!
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  4. #33
    I am he, fear me the evil twin's Avatar
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    Quote Originally Posted by dom14 View Post
    Does that include the GQs RB30 & TB42 boxes as well?!!
    No... as prev posted... TD42 only from 99 to 02

    Pic of the old v new 5th gear with the extended spline

    http://grantm.customer.netspace.net.au/5th4.jpg
    Last edited by the evil twin; 17th January 2018 at 06:09 PM.
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    dom14 (18th January 2018)

  6. #34
    Patrol Guru sooty_10's Avatar
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    Quote Originally Posted by dom14 View Post
    It would be great if you can post a picture of that here.

    What is time period the bad 5th gear was installed into the GU gearbox?
    There is good pics floating around showing the changes. Potentially on the other patrol site. I will endeavour to get some pics if I get my old gearbox back from the mechanic.

    The problem boxes I believe were early TD42t/ZD30 GU's up till some stage in '02.

    Sent from my SM-G925I using Tapatalk

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    dom14 (18th January 2018)

  8. #35
    Patrol Guru sooty_10's Avatar
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    Quote Originally Posted by the evil twin View Post
    No... as prev posted... TD42 only from 99 to 02

    Pic of the old v new 5th gear with the extended spline

    http://grantm.customer.netspace.net.au/5th4.jpg
    Didnt see this before my previous response.
    Yep thats one of the good pics I mentioned. They have also increased the length of the spline on the main shaft. Massive overall increase in contact surface area between the shaft and gear.

    Sent from my SM-G925I using Tapatalk

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    dom14 (18th January 2018)

  10. #36
    Patrol Guru sooty_10's Avatar
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    So i ended up getting a 2nd hand 3L crd gearbox from patrol-a-part. Only had 77k kms I believe. All in and installed and I am back on the road.

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    mudski (9th February 2018)

  12. #37
    Breadmaker Shaker Plasnart's Avatar
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    Quote Originally Posted by sooty_10 View Post
    So i ended up getting a 2nd hand 3L crd gearbox from patrol-a-part. Only had 77k kms I believe. All in and installed and I am back on the road.

    Sent from my SM-G950F using Tapatalk
    Thats good mate. Ive got an 01 GU TD42 and waiting for this to happen. Every time uphill in 5th it crosses my mind.

    Actually a mate of mine not on this forum did his 5th years ago and fought Nissan about it. Got labour free I think but not parts.

    What is the charge? Eating a meal? A succulent Chinese meal??

  13. #38
    Patrol Guru sooty_10's Avatar
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    Quote Originally Posted by Plasnart View Post
    Thats good mate. Ive got an 01 GU TD42 and waiting for this to happen. Every time uphill in 5th it crosses my mind.

    Actually a mate of mine not on this forum did his 5th years ago and fought Nissan about it. Got labour free I think but not parts.
    The good news is if 5th does go, you can always use 4th to get home.

    All up cost me $880 + freight for the box, and $650 in labour. No way was I going to do it at home when thats all the labour costs, gearbox out is a prick.

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  14. #39
    Breadmaker Shaker Plasnart's Avatar
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    Quote Originally Posted by sooty_10 View Post
    The good news is if 5th does go, you can always use 4th to get home.

    All up cost me $880 + freight for the box, and $650 in labour. No way was I going to do it at home when thats all the labour costs, gearbox out is a prick.

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    Dont blame ya. $650 is easily worth the labour. Have you checked your fire wall? Has it been panel beated like I've heard happens to make the job easier? Hopefully they tilted the engine and did it nicely.

    What is the charge? Eating a meal? A succulent Chinese meal??

  15. #40
    Patrol Guru sooty_10's Avatar
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    I'll check mate. Good advise. I had to remove the engine mounts and drop the engine onto the chassis mounts to do it myself last time I had it out.

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