I have a 2001 turbo diesel 4wd rodeo. It has started throwing out of 1st gear on take off. Doesn't do it every time but is getting a bit annoying. I've replaced the transmission oil and engine mounts (I...
old post, , M/t box. (built many)
jumps out of 1st gear.
bad shift linkage.? ever try shift it with no shift lever. to prove that? (ask)
bad 1'st gear dogs. !
bad bearing near 1st gear, causing it to bounce and jump out.
bad synchro, blocker, hub that dogs to 1st.
shift rail dentent balls failing , springs on balls, or plug fell out.
the blocker and dogs, hold the gear,
the box is constant mesh box, so gears never shift.
on the dogs lock up . (and effects a shift)
if you need a photo of that action or video that too is easy.
1st gear has the gross effect of putting huge gear spreading actions
from top 1st gear to bottom cluster, they want to spread.
so any bearings that can allow that, there, will cause 1st to fail.
easy.
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