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Are these shims Tea20 standard motor

K

kaesark

Member
While I wait for the felt seals to soak
overnight I now Ponder as to what these 3
brass washers may be. I suspect that they
may have been used to shim behind the Crank
Sprocket before it was sent away for a
grind.
Any ideas???
a153908.jpg
 
Hi unfortunately no I don't know where they were prior to being sent away for crank grind. I have three of them. How do I measure end play if I have any that is.
 
End play is the movement front to rear that the crankshaft has while installed in the engine block. Installation of the spacers will reduce the end play. Accurate measurement usually involves a dial indicator on the end of the crank. A micrometer on the spacer should tell you how much you have to work with.
 
Setting the end play is critical.

That is a common area of failure, there is a fiber washer behind the front main cap, if I recall correctly, and a steel washer in front? The shims set the clearance.

I don't have a book on that set up, so can't give exact specs, and could be confused on the model...

You need to be sure everything is assembled correctly before going further with the rear main seal. If not, the crank may need to be taken back out.
 
Sounds like specialist type of equipment which may mean I take it back to automotive shop to set up accurately.
Thanks
 
Tea20 standard motor, the end float is set by the thrust washers on the crank main middle bearing, not these shims.

From memory the shims o get the alignment of the two sprockes correct.

Man you need a manual
 
On the end of the crank is a gear. That gear might butt up against the engine block. Push the crank back and forth. Use a set of feeler gauges to get the clearance between the gear and the engine block. That will be your end play. If that gear does not quite butt up against the block, get a clearance minimum to maximum. Add your shims until you get to spec. Use your mic to figure the thickness of your spacers. No Mic? Stack up feeler gauges next to the spacer until it eyeballs close enough. Try it.
 
Hi yes I do have a manual but unfortunately
for me it only spells out so much and shims
is where it lacks detail but I agree the
thrust washers either side of the middle
bearing set the endplay as for the shims I
guess would go behind the crank sprocket.
Thanks
 
CHECKING the end play of the Crankshaft is critical!

Crankshaft end play is maintained by the TWO THRUST WASHERS (TEA-20 ) on either side of the CENTRE MAIN BEARING CAP! And by no OTHER MEANS!


SECTION C page 31 of SERVICE MANUAL.

SHIMS are to be placed between CRANCK SPROCKET and shoulder on Crankshaft.


SHIMS are to be used to assure Cam Sprocket and Crank Sprocket are aligned......do not assemble sprockets if they are NOT aligned. Timing chain and sprockets shall have premature failure If not properly aligned.


ITEMS # 13 in PARTS CATALOQUE.
a153946.jpg

a153947.jpg

a153948.jpg

a153949.jpg

a153950.jpg
 
By what means did you check the clearance between the bearing inserts and the crankshaft journals?

Do not TRUST a Machine Shop to check the clearance between the bearing inserts and the crankshaft journals.

Check crankshaft Thrust with a Dial Indicator:
a153965.jpg

a153966.jpg
 
Wow thanks very much for all your effort which I really appreciate. Obviously I am very much a visual learner which is why I struggle with the manual as it does not have enough pictures for me.
Thankfully I sorted out end play which is spot on.
Again many thanks your help has greatly improved my confidence.
 
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