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t-case shifter problems

Tech Talk for Nissan owners.

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t-case shifter problems

Post by Brendan-s »

ok so i can't get it into neutral or low in my MQ. it was working fine, then gradually got a little harder to get into and now it won't go in at all. i know that for most things short of driving up a building high-range is fine in a diesel Patrol ( :D ) but for those times i'd like to go a little sloooower i'm stuck. i have SFA idea of what to do/look at. any suggestions please people?
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Post by of4x4 »

Ok. I'm no expert but immediately think of 2 things.

1) Check the oil in the transfer - it is clean or full of bits / black. indication of stuffed bits in transfer. When was the last time you checked / changed the transfer oil?

2) Check under the car that there's nothing jamming the operation of the lever. I once had a mechanic leave a screwdriver in the engine bay that found it's way down on top of the gear box. Took me ages to find out what the bloody rattle was....

Hope it helps.
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...

Post by JemmyBubbles »

You don't have a significant body lift or have the gearbox/transfer crossmember spaced down any. I know my experience these two things in a gq shorty, can cause difficult low range selection due to the stick contacting teh floor pan...
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Post by Stew77 »

My GQ was a bitch to select low range & all it took was some high temp grease on the selector pin & notched shift locator bracket & she was as easy as J-Lo to engage ;) . If it has gotten worse over time I would suggest you climb under & do this cheap option first, but by all means change your fluids if they need it.
Good luck
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Post by Brendan-s »

Thanks for replies guys :)

Nope no bodylift yet, no mods since it's started stuffing up. I will drain t-case oil and replace on Saturday, also will grease me stick ;) at the same time.

Err, 'scuse my ignorance but what's the selector pin again? Shift lever?
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Post by of4x4 »

just an afterthought.... Not sure if this is the same on the MQ, but the GQ has a bracket bolted to the side of the gear box to lock the transfer lever into it's selected position. This is held in by 2 bolts.

If one (the low range end) was to work loose allowing the bracket to move, it would become increasingly difficult to select low range. If the bolt fell out, I could easily see that anything less than high 4 (i.e neutral / low) would not be able to be selected.

I might be able to track down a pic if this doesn't make sense.
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Post by of4x4 »

Pic Added. Remember this is a GQ box. I think the MQ transfer lever is on the otherside? (I'm sure someone will correct me if I'm wrong....).

Of course this is all based on assumption as I am not sure whether the MQ has this, or a similar bracket. I couldn't find any pics on the net to confirm.

p.s. This is the same bracket that Stew77 refered to and the selecter pin runs in the notches.
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