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Thread: 5 Speed gearbox flaw repair

  1. #71
    Senior Member DMC-81's Avatar
    Join Date:  Apr 2014

    Location:  Florida

    Posts:    1,182

    My VIN:    <2000

    Club(s):   (DCF)

    Quote Originally Posted by David T View Post
    There is no good way to check bearing preload except the procedure in the Workshop Manual. If it was ever improperly set you could have damaged the carrier (dif) bearings so no amount of adjustment will stop a noise. Make sure you have the proper amount and the correct type of gear oil. The spider gears have no effect unless you are turning or a wheel is spinning faster or slower than the other. Worn bearings is a possibility but unless the box was operated without oil it is a rarity.
    Thanks David. When I remove it again I'll check it using the procedure in the manual.

    --------------------

    I tested it again this morning to check linkage ( i.e. Does moving the shift selector cause any change in the deceleration noise). It didn't.

    However, I focused on 3rd and 4th gears again today, and I really don't hear the same noise in those gears. I think the faint noise I'm hearing is residual noise from whatever gear is messed up, like I'm hearing in neutral. Therefore, I don't suspect the bearing preload or the spider gears anymore.

    So, the noise is really focused on 2nd gear. Which makes sense because when the nut-backing-off event happened in November, I tried to get it in gear after stopping at an intersection, I wouldn't go into first, but it went violently into 2nd. That's where the shift selector damage happened, but perhaps something also happened to the 2nd gear assembly. Something internal as the gears looked normal and I didn't take the gears apart, and the 1-2 selector fork appeared straight.

    What would be the symptom of the 2nd gear synchro spring (103106) being broken or damaged?
    Dana

    Delorean status: CECF 2017 Platinum Award winner. Still tinkering...

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  2. #72
    Senior Member DMC5180's Avatar
    Join Date:  May 2011

    Location:  Reedsburg, WI

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    Dana ,

    There are Half moon needle bearings between each synchromesh gear and shaft the spin on. Perhaps something migrated in there. Also remember the secondary shaft assembly is submerged in gear oil. Lots of churning going on.

    http://store.delorean.com/c-288-4-1-2-gears.aspx


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    VIN 5180, Frame 3652, STAGE I, DM-eng Solid State Solutions (RPM Rly, Dm.Lt.Mod., Fan Fail Mod. , FAN Rly, HS.Rly) , HID sealed beam style headlights, SPAX user since 2009, Eibach springs, Mid-State Club Adj. Rear LCA's, DPNW poly-sway bar kit, DMCEU LCA Stabilizer link kit, DMCMW Illuminated door sills, Aussie Illuminated SS Shifter plate, GENUINE MOMO EVO Steering wheel, DELOREANA Extended View Side Mirrors w/ Heaters, DELOREANA LED Door Lights.

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