NV5600 Rebuild and Shimming

[Stanley]

So after I rebuilt my t case I rebuilt my 5600.....Whew what a job but its back together but Im having trouble finding the correct way to measure endplay on main shaft and counter shaft etc. 

Its all together minus the middle cover inside the bell housing. and I have new shim packs for both shafts. I might have went to far and might need to remove the tail housing to obtain correct measurement... Can anyone shed light on this method. I know what needs to happen, just not sure how to go about it lol. And I know specs are .002-.006 endplay. Thanks.

[Haggar]

Stanley,

 

I am not sure I can help much, never done a 5600.  But any time I measure endplay (mainly crankshaft thrust)  I use a dial probe or test indicator directly on the end of the shaft, on a magnetic base connected to the case (in my case the block).  I then use a nice sized pry bar and push the shaft relative to the block in both directions.  I set zero on one direction and directly read endplay. 

 

For counter shaft (if you cannot get to the end of the shaft ie trapped bearings.) I use a dial TEST indicator, and use the side of a gear.

 

Here are a couple pictures of the difference but the Test indicator is very nice to help you reach into limited clearance areas, but still see movement.

 

from the mitutoyo website probe type

 

From mitutoyo website   test type or "finger" type

 

hope that helps!

 

Hag

[Stanley]

Thanks, yea I have all the tool goodies. Your idea for the counter shaft exactly what I was thinking. However I think the correct way might be by removing the tail housing. Maybe I can get away by not doing that? 

[Dieselfuture]

How hard is it to get to 3 gear synchros, or at that point might as well change everything ?

[Haggar]

Ahhh I got ya.   If this is a correct cross section,  Unless you need to know the end play of the dark blue short shaft (reverse) in the lower right, you can get all you know with tail housing on.   (it looks like you have to properly pre-set that reverse shaft before you assemble the tail housing on to begin with....)

 

I also found a TDR write up of a rebuild (very limited) and attached it.

 

Hag

TDR64_RebuildingTheNV5600(1).pdf

[Stanley]

 

15 hours ago, Dieselfuture said:

How hard is it to get to 3 gear synchros, or at that point might as well change everything ?

If your in there do it all! Not worth just one or two. All Bearings and all synchros. This time I skipped doing the needle bearings. All bearings looked great but I got the whole kit and kaboodle so new bearings it got. 

 

14 hours ago, Haggar said:

Ahhh I got ya.   If this is a correct cross section,  Unless you need to know the end play of the dark blue short shaft (reverse) in the lower right, you can get all you know with tail housing on.   (it looks like you have to properly pre-set that reverse shaft before you assemble the tail housing on to begin with....)

 

I also found a TDR write up of a rebuild (very limited) and attached it.

 

Hag

TDR64_RebuildingTheNV5600(1).pdf

I used this site and many others for the rebuild.