Re: [AMC-list] slooow....

[tom jennings <tomj@xxxxxxx>]

Yeah, on the American, the big-nut axle is fairly easily handled without
messing with the big nut. To pull the trans requires a bit of careful
cleverness (you have plenty of that): with the car up like Frank says,
center-jack the axle, unbolt the FRONT spring perches. Unbolt the final rear
brake line mounting bracket (gives you a couple inches of non-harmful
slack). Lower the center jack, the axle will swing back far enough to pull
the yoke out of the trans. I use my feet, laying on the ground, to push it
back.

Getting it back it is harder, but getting a nylon web ratchet-strap long
enough to go around the rear x-member and an axle tube lets you ratchet it
up one-handed. You have to balance the strap location to pull it more or
less straight in.


The big nut on mine was loose, and sliding around. I got it tight by setting
the gap to spec on the ground, using the big wrenches to tighten it, THEN
installed the axle above. Still hard to maneuver on the car! But my local
car repair shop where i get oil changes let me get under there while on the
lift for the final tighten. 300 ft lbs is HARD WORK! :-D





On Thu, Aug 11, 2011 at 8:56 AM, Frank Swygert <farna@xxxxxxx> wrote:

> I cut your original message up, just included parts pertaining to my reply.
>
> Better too much grease in the trunnions than too little! I'd inspect them
> good to make sure they aren't turning in the arms though. The caps on the
> Classic style trunnion can be pulled off one at a time, cleaned, then
> reassembled with anti-seize before greasing. Wouldn't hurt to grind a flat
> on one "side" so grease would spread more evenly across the trunnion, but
> that's not really necessary. Most of the time the zerk is frozen shut or the
> trunnion won't take more grease but monkey's put a full couple quirts in
> anyway, or try, piling grease around it instead or in. Most trunnions in
> good repair won't take a full stroke of grease, there isn't room inside!
>
> 13/43 is 3:31. That was the automatic trans ratio. OD used 4.11 with 4.38
> optional. 64-69 Americans used 3.31 (and 199 models even 3.08) with OD, but
> the heavier Classic used 3.78with OD and the 196 with 4.11 optional. 3.31
> was used with a standard three speed. The 3.31 might be a bit steep in OD,
> making OD useful only on the highway over 60-65 mph.
>
> I wouldn't use the big wrenches on the driveshaft OR slide the rear axle
> back. With weight on the axle you can take the u-joint apart on the car.
> That's much less work and time, though a bit cramped. I put the car on four
> jack stands (or the front wheels on ramps) with the stands under the axle in
> back so the shaft can be rotated. It's a bit of trouble lying on your back
> under the car, but less than sliding the axle back. If you loosen the big
> nut you still have to slide the axle back or dismantle the u-joint for room
> to get the shaft out. Best to leave the nut alone, has to be tightened to
> 200-250 ft/lbs (I forget the exact number) and positioned correctly on the
> pinion shaft.
>
>
> -----------
> Date: Tue, 9 Aug 2011 13:07:01 -0700 (PDT)
>
> From: Joe Fulton<piper_pa20@xxxxxxxxxxx>
>
> In other news, I brought home a one-owner 62 Classic wagon a couple of
> weeks
> ago. I cleaned underneath the vehicle and the trunnions had been so
> over-greased in the past that there was probably at least a pound of extra
> grease spread over each trunnion assembly from the spring seat down to the
> backing plate. I had intended to adjust one front brake which was tight, but
> I couldn't even access the rubber plug on the adjustment port without
> removing gross quantities of grease.
>
>
> The car has overdrive and has a 13/43 ration according to the tag, which I
> think is about a 3.23. With O/D engaged that old long stroke 195.6 torque
> will be useful.
>
> The 64 American is still awaiting a transmission transplant which I may
> start
> tonight. Still debating whether to use the big wrenches on the big nut or
> just
> chicken out and move the differential back like the TSM recommends.
>
>
> --
> Frank Swygert
> Publisher, "American Motors Cars"
> Magazine (AMC)
> For all AMC enthusiasts
> http://www.amc-mag.com
> (free download available!)
>
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