Jim Grant's Tech Tips
'89 Isuzu Amigo, Can't Get the Transmission Out
Q:
Hoping
that you may be able to help with a difficulty I have run into concerning
an ‘89 Isuzu Amigo with a manual tranny. I’m working to remove
the crankshaft with the engine in place. The transmission has only slid
back about 1/2"with difficulty and appears not to want to move back
any further. Is there anything else that would be holding it in place
or is it simply a matter of needing to hit the right angle, between the
trans & engine. The transmission is unbolted completely and the engine
is still in the mounts.
A:
It
sounds as if the pilot bearing is seized to the transmission’s input/front
shaft. The pilot bearing is located on the rear of the engine’s crankshaft.
This bearing aids in aligning and supporting the front shaft of the transmission
and clutch disc. The problem is that the pilot bearing is larger than
the hole in the clutch disc. When this happens the transmission cannot
be removed as normal. You’ll have to find a creative way to unbolt
the clutch. If I’m not mistaken there are some small access covers
on the bell housing of the transmission. With the covers removed you can
reach the bolts that hold the clutch to the fly wheel. I’ve seen
some creative hole saw work used to solve this problem as well. Once again
just some of the unplanned time, fun and dollars you can have working
on vehicles.
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