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daily

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howdy,
my first time to this or any healy forum.
i've owned a couple 100-6's & currently drive a driver
[18k last yr in my 59 100-6]
today looking for advice, as the tranny [60k] has developed
a whine @ rd speed in 3rd-4th-neutral[sounds like a valve tappet???] box is smooth otherwise.
note,about 15k ago replaced OD pump plunger & accumulator piston. at that time discovered ground plastic debris in OD
&trans sump {possible bearing cage material]
i do my own work, any ideas out there???
with respect 59er
 
Pricing new parts for a tranny rebuild added up to $1500. So I bought a Toyota conversion. The gear ratios are exactly the same. The car drives the same, but I only spent $900. (I don't know how much the kits are now). Less heat coming up through the gearshift too.

Jerry
BN4
BJ8
 
I would contact Bill Boulton at tricarb@aol.com He was very reasonable and an expert. He will probably walk you through it if he can. He is in Oregon where the June conclave is to be held if you are attending. He is part of the organizers so he should be there. Nice person. We put the gear box in the back of the SUV and he repaired it over a weekend. Pretty country to see while he is working. His price was 1/4 of what I was quoted elsewhere but I pulled and replaced the box with my wife and no lifts.
These gearboxes are tough so I'd try changing the oil to Redline first and see if it doesn't quiet down. I don't recall any plastic in the gearbox but we sure have many experts on line here.
 
Only thing I can think of that is "plastic" (probably a Nylon composite) is the speedometer drive gear on the non-overdrive xmsn.
 
perhaps ahead of self but,
if my guess is right,& i've lost a ball bearing cage, [plastic debris]
what is likely consequence? how soon?
i suspect the anulus bearing as the debris was found in OD case.
which haynes manual is suitable for this job?
as one having more curiosity than cash, i hope that early intervention, equates
to an economical repair.
with respect 59er
 
Most,later Phase2, MK3 boxes had caged needle brgs on the lay shaft& on mainshaft to 1st motion shaft that used caged needle brgs w/plastic(nylon?)retainers(holders). Hope these aren't your source of plastic. Genos2
 
Hello daily,

Welcome to the forum I hope your visits here are long and fruitful, happy to have you around.

I take it you are still using the original type side shift transmission here.

Yes you are right there are some roller bearings that have plastic type substance on either outer side of the bearing race.

The bearings I am talking about are the ones on the output shaft of the annulus that are pressed into the rear extension housing of the o/d, as you surmised.

I've never had these bearings apart so cannot tell the outcome of if the plastic pieces come apart. I don't remember if they are roller or ball bearings.

Basically the only thing I can think of happening if they come apart is they could collapse as the cage (if indeed it is plastic) would not be there to hold the rollers/balls apart.

You can remove the o/d from the main transmission while it is in the car (I've done it) if you don't want to remove the transmission and o/d as an assembly. The hardest part is aligning the splines of the annulus assy, but it can be done.

I thought there was basically only one Haynes manual for the Healey 6 cylinder cars. Either way it's the one I use as it saves me getting the factory manual dirtier than what it already is.

Early intervention is always a good thing.

Keep the questions coming as I'm sure you'll get the answers here because there is a large knowledge base to draw from.

Best regards,

bundyrum.
 
howdy you's
appreciate all the feed back.
as i've allowed mind to wander further yet.
as it relates to debris=noise [dry whine]in main shaft
oil passage blocked ????
will dry-worn rollers make more noise than dry-worn ball brng?
with respect 59er
 
Hello daily,

You mention "dry-worn rollers" and "dry-worn ball bearing". The rollers won't really make any more noise than the ball bearings.

Does this mean the gearbox was used without any oil in it?

Best regards,

bundyrum.
 
dear sir,
far be it of me to ever run a dry gear box.
although i've been known to roll a qt low!!!!!
to that end, i understand that at best,my trans full up,
will barely cover the bottom of the caged brngs[main shaft].
that said,the consequence of intermittent oiling is easy to
imagine.
snooping around,i've been told the rollers are sturdier than
the caged balls [less load]
do you know what psi the main shaft is feed at???
with respect 59er
 
Hello daily,

Firstly I never said you ran it without oil, I just posed the question that it may have been at some time.

If you are talking about the original side shift gearbox here it does not have caged needle rollers. The needle rollers supporting the laygear are loose. The only needle rollers on the main shaft support the 2nd & 3rd gears and the forward end of the main shaft (in the back of the first motion shaft). They are loose also. The term "loose" here doesn't mean the needle rollers are free to float around at will. It just means they are not caged.

To answer your question about oil pressure fed into the main shaft I'd say it's a drip feed or "splash feed". There is no pressure feed to the main shaft. As soon as the car starts to move the oil is flung around by the gears and that's what is relied upon to lubricate the works.

Best regards,

bundyrum.
 
howdy,
thought i'd beat this horse some more,
when i found this composite debris in OD,I was aware of concave machined-molded surface,thus my thinking went to
a ball bearing cage collapse???
I am told the main shaft is oil fed through OD pump???
if true what is operating PSI @ BEARINGS???
WITH RESPECT 59ER
 
Hello daily,

What this horse isn't dead yet?. Shame on us, so let's try some more eh, why not.

Good thinking regarding the ball bearing cage collapse, couldn't have done better myself.

The main shaft oil is NOT fed by the O/D oil pump. The oil pump is mounted in the front section of the O/D and thus any oil ways are in that section. There is no transfer of oil pressure from the O/D to the main gearbox.

FYI: The O/D oil pressure is in the vicinity of 500psi approx (yes I know some people have more but there are always those that have more). How much of an oil leak do you want if it was at 500psi going back and forth from O/D to gearbox.

This is also true of the bearings, they are lubricated by "splash" not by pressure.

Best regards,

bundyrum.
 
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