Correct method, Flywheel Endplay Measurement?

[d3ac0n]

Is the correct flywheel endplay measured when pressure is applied against the flywheel or is it measured without pressure applied?

I ask because when I have my flywheel pulled all the way out away from the case and my dial indicator zeroed out, shims installed (no oil), gland nut nice and tight (but not torqued to spec) ill then push flywheel in towards the case as far as it'll go and ill get .004"

But...

If I press very firmly against the flywheel and maintain/hold the pressure my indicator reads .009"

Which reading do I go with, the one with pressure applied or the one with no pressure?

[risk]

No pressure. The force you are applying is flexing the assembly and giving you a false reading.

Push or pull, release, then take your reading with the flywheel at rest. Your .004" is probably pretty accurate.

[Tim Donahoe]

I also measure the play (with a dial indicator) without the flywheel seal installed.

Tim
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Richard O'Brien

[vwracerdave]

I hate to start a cat fight but it is possible to set the end play without the crank & flywheel being installed in the case and just sitting on the workbench.
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[Bama Dave]

I am interested to hear this method. Please explain.
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David Richerson

1970 Beetle
1971 Super
1972 Baja

[d3ac0n]

[[email protected]]

[sjbartnik]

There is a formula in the Bentley for this:

Install flywheel with 2 shims.
Measure end play.
Convert it to mm (assuming you have a dial gauge in inches).
Take that reading in mm and subtract .10mm.

The answer is the size of your third shim, in mm.
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1965 Volkswagen 1500 Variant S
2000 Kawasaki W650

[airschooled]

When doing a "push/pull" check like on an assembled engine, push and pull from the opposite end as your micrometer. (Flywheel or pulley.) Do it a few times and look for consistency in your measurements. Make sure to oil the shims before installation.

When building an engine, I like to use a feeler gauge stack as mentioned above, then check for final end play with a .003" or .004" feeler gauge between two shims. This is done with the flywheel tight, but no seals or o-rings installed. No distributor drive gear either, since that can bind the works up sometimes.

Good luck,
Robbie
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[Joey]

I use the distributor rotor to move the crank to check end play...


Link

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Joey

‘60 Kombi - '74 Bus - '79 Panel - '65 Beetle

[laststarfighter]

Please let me know if I understand correctly.
1. measure existing endplay
2. remove flywheel and main oil seal and take out one shim, leaving two.
3. put flywheel back on without main oil seal or O ring (or leave in the old O ring? ) and Bentley says torque to minimum 75 ft lbs to measure.
4. measure endplay again.
5. take the difference in the two end play readings and subtract .004 inches to get the thickness of the third shim.
6.put 3rd shim in
7.put in the main oil seal and new O ring seal with lube and lube the gland nut
8. torque to minimum 225 ft lbs but not more than ?

Is this right, especially about doing the second end play measurement and shim swapping without the main oil seal being in?
Thank you

[laststarfighter]

Sorry it was page 2-36 of the Haynes Repair Manual.

[modok]

[RWK]

To measure on the bench without assembly,
Depth mic end of crank to thrust surface.
Depth mic flywheel thrust to crank seat surface (where dowels are).
subtract flywheel depth from crank depth measurement.
remainder is/should be overall bearing thickness, shims, and end play combined.
Takes all the variables out,numbers don't lie.
Assumes all surfaces are ground correct and square.
The way it's done in the factory, they also assembled the crank,flywheel,bearing shims and seal and dropped into case half, no one was tapping in seals and checking an indicator.
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63 Type 113
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[laststarfighter]

thank you. I appreciate the help
will work on today when the digital dial guage.

[ashman40]

[ashman40]

[70 GHIA]

[MuzzcoVW]

[MuzzcoVW]