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Old 12-14-2019, 07:44 AM   #21
Mac VP
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Default Re: Pulling engine

I think his reference to the green grease was from the pilot bearing, which he was calling a “thrust bearing”..........at least I think that’s what he meant.

I don’t trust the chinee sealed ball bearing type pilot bearings. For a long time we usually recommended the oilite type pilot bearing (aka pilot bushing to some folks). I found a source of Japanese ball type pilot bearings (made by Naichi) so we’re now happy with both types. The Japanese bearings I bought are also used in the old generators, so they come with a snap ring groove but it presses into the flywheel just the same.
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Old 12-14-2019, 11:40 AM   #22
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Default Re: Pulling engine

Picture worth a thousand words
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File Type: jpg 193132E9-15F5-45B7-813C-B34EFC653C84.jpg (67.6 KB, 70 views)
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Old 12-14-2019, 12:34 PM   #23
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Default Re: Pulling engine

Never used the word Thrust Bearing until I got the ‘35 Ford. I thought someone corrected me and said it’s called that when I said Throw out Bearing. It is what I used to call a throw out Bearing & still do on my 442. With regard to my pilot bearing pressed into the FW it’s the Ball Bearing type. Still looks fine. If I have to pull the engine I inspect & replace all stuff u only see after Engines out.
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Last edited by AnthonyG; 12-14-2019 at 01:23 PM.
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Old 12-14-2019, 01:21 PM   #24
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Default Re: Pulling engine

Isn't the rear main bearing called the thrust bearing?
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Old 12-14-2019, 01:38 PM   #25
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Default Re: Pulling engine

Obviously don’t have a clue. I’m going back to what I always & seems should’ve stayed w “ ‘Throwout Bearing’ is what I’m talking about & in the Pic., LOL here’s a pic of the Green mint jelly Chinese grease ( centrifugal green streaks) on the clutch plate.
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Old 12-14-2019, 03:00 PM   #26
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In my 60 plus years of doing this I have never heard "thrust bearing"; always "throwout bearing". As "marko39" states, most engines have a "thrust surface" on one of their main bearings, which I believe could confuse the issue. I'm stickin' with "throwout bearing".
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Old 12-14-2019, 04:46 PM   #27
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Default Re: Pulling engine

Not to be confused with clutch release bearing.
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Old 12-14-2019, 07:23 PM   #28
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Default Re: Pulling engine

Since we are talking about the throwout bearing, clutch release bearing,
Here is Rumbleseats lubrication procedure for the throwout bearing. I know that JWL isn't fond of this procedure, but if done carefully, it sure beats that poopy green chinese lubricant.
Ken


THROW-OUT BEARING LUBRICATION: These used to come packed with a relatively
heavy high-temp quality grease. Then manufacturers went to a cheap thin grease
and not much of it. Consequently, bearings no longer last. The cheap grease
thins from the high temperatures generated in the clutch area and is soon slung
out of the throw-out bearing. This not only causes the bearing to run relatively
dry, it can also cause grease to get on the clutch and flywheel engagement
surfaces which promotes clutch chatter and erratic engagement. One of the added
benefits(?) is you get to listen to the throw-out bearing let out a blood
curdling howl on cold days and in front of your buddies. Neat! While rotating
the bearing slowly you can feel any bearing roughness. New throw-out bearings
are lucky to last 15,000 to 20,000 miles before they start their howling act.
(From rodnut: There are two or three different grades of throwout bearings.)
A cure I use is to grease them myself .... new and used! These can be greased
without much effort. I wash the new or used bearing in solvent until I’m certain
all of the cheap grease used by the manufacturer is gone. Dry it without
spinning it (low heat or compressed air). Drill a single 1/8" hole on the outer
edge of the bearing (not in the engagement surface nor in the outer bearing
race). This is pretty hard and a good bit is needed. Then I use a needle type
U-joint grease zerk adapter and give it TWO shots of high temp grease. Rotate
the bearing half way around and give it TWO more shots of grease. That’s all
the grease it’ll need for well past 50,000 miles. Rotate the bearing several
times to disperse the grease. I plug the 1/8" hole with a tiny sheet metal screw
and some red Loctite or solder it shut. Either works. In my Ranchero, I’ve got
over 200,000 miles on the same throw-out bearing using this method.... and this
is after it first howled.
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Old 12-14-2019, 07:38 PM   #29
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Default Re: Pulling engine

Odd, with the dozens of standard shift cars I have had since the late fifties (some for many years and many miles), I have never had a throwout bearing go bad.
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Old 12-14-2019, 11:07 PM   #30
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First for me too, but this is also my first really antique Ford config. Had many post ‘50 Chevys, couple Oldsmobile’s one Plymouth, several Mustangs, & a Pontiac! All sticks never a bad Throwout Bearing. I will say was always my common practice as the Throwout Bearing & the clutch plate were pretty inexpensive, if I had the Tranny off always put new ones in.
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Old 12-15-2019, 11:34 AM   #31
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Default Re: Pulling engine

I run a generator roller bearing for the pilot (as Mac VanPelt noted) and usually replace the throw-out bearing as standard procedure.
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Old 12-15-2019, 03:46 PM   #32
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Default Re: Pulling engine

Looking at the picture in post #22 (and blowing it up) I see green grease on the tip of the input shaft and a thin sheen on the input splines. I tend to agree with Mac VP that the grease is coming from the pilot bearing. It is strange that so much made its way back to the throw out bearing guide, but I don't see any on the throw out bearing itself.
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Old 12-15-2019, 07:00 PM   #33
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Default Re: Pulling engine

Throw out bearings should be sealed today. they typically last longer than the clutch disc unless the nut behind the wheel rests his foot on the clutch pedal or the clutch is out of adjustment with no free play.
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Old 12-16-2019, 05:37 PM   #34
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Default Re: Pulling engine

FYI, pilot Bearing is fine, definately the Throw out Bearing not only throwing Chinese green grease but also the Bearing has a lot of play between ball bearings & races. FYI for Phil, no nuts behind the pedal, always got 100k To 200k miles out of all my clutches, depending on how much I raced them, for 54 yrs. Even s nut behind the controls would have s hard time wrecking a Throwout Bearing or clutch in 2000 miles, PS clutch is fine & had enough free play.
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