Does anyone have a good source of info regarding tolerances of axle
shafts, carrier gears etc. I’m checking for wear and want to know
what parameters are acceptable for normal driving conditions. Thanks–
rmj
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In reply to a message from rmj sent Tue 6 Mar 2007:
Hi,
Which of the three types of XK rear axles do you have, ENV, 2HA or
4HA?
Regards,–
The original message included these comments:
Does anyone have a good source of info regarding tolerances of axle
shafts, carrier gears etc. I’m checking for wear and want to know
what parameters are acceptable for normal driving conditions. Thanks
rmj
–
Mike Spoelker 672027
Louisville, KY, United States
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In reply to a message from MikeSpoelker sent Tue 6 Mar 2007:
Oops, didn’t notice the Salisbury in the title. So we’re down to
twotypes, 2HA, early XK-120, about '51 to late '52, and 4HA
post '52.
I have a factory rear axle manual for the 4HA but not 2HA. There
is quite a bit of good 4HA axle info in the factory XK service
manuals, which are widely available in reprint.–
The original message included these comments:
Which of the three types of XK rear axles do you have, ENV, 2HA or
4HA?
The original message included these comments:Does anyone have a good source of info regarding tolerances of axle
shafts, carrier gears etc. I’m checking for wear and want to know
what parameters are acceptable for normal driving conditions. Thanks
rmj
Mike Spoelker 672027
–
Mike Spoelker 672027
Louisville, KY, United States
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In reply to a message from MikeSpoelker sent Tue 6 Mar 2007:
Mike, I have a 4HA axle. Does your factory axle manual have any
different information than the XK 120/140/150 service manual? If so
are they obtainable? Thanks Roland–
rmj
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In reply to a message from rmj sent Tue 6 Mar 2007:
Roland,
I took a look at the manual I have, ‘‘Section H, Rear Axle’’, and I
would say it does not contain any info you would not find in the XK
manual. It covers disassembly, backlash setup, reassembly for the
Salisbury 4HA (Dana 44), 3HA (I assume Dana 30 or 35) and the 4HA
Thornton PowerLok. The manual itself is soft cover, mottled green
with a two-hole binding for inclusion into a loose-leaf binder. I
don’t know exactly which overall manual it was a part of, but I
assume it was Mk-I or Mk-II as it covers both 2.4L and 3.4L motors,
both disc and wire wheels, but not drum brakes.
I would compare the current gear backlash against the original
factory recomendation to determine crown and pinion wear.
Virtually everything else can be visually inspected for wear.–
The original message included these comments:
Mike, I have a 4HA axle. Does your factory axle manual have any
different information than the XK 120/140/150 service manual? If so
are they obtainable? Thanks Roland
–
Mike Spoelker
Louisville,Kentucky, United States
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In reply to a message from Mike S sent Wed 7 Mar 2007:
Does anyone know what the dimension is of the block used to setup
the pinion shaft spacing for the 4ha diff, please? thanks in
advance,-Fred–
74E 25515
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In reply to a message from Barnstormer9 sent Fri 12 Nov 2010:
See Plate H9 in the XK120 Service Manual, dimension B and
the table under it.–
XK120 FHC, Mark V saloon, XJ12L Series II, S-Type 3.0
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In reply to a message from Barnstormer9 sent Fri 12 Nov 2010:
If your current pinion ratio matches one of the three listed in the
manual…4.27, 3.77 or 3.31…the pinion location is pretty
straight forward. Also, if you have the old shim pack and the
pinion height deviation-from-standard stamped on both the old and
new pinions, it’s a simple matter of math to arrive at the new shim
pack thickness.
I rebuilt my 4.09 without knowing the standard pinion height
measurement, so it took some trail and error to arrive at the
proper pinion setting. IIRC, I started with the 2.625 ‘‘B’’ distance
and went from there. Hopefully, you can glean enough info from
your old parts to get the job done without too much frustration.–
Lee140FHC
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In reply to a message from Lee140FHC sent Fri 12 Nov 2010:
Thanks for your replies gents. Unfortunately I don’t have that
book. Nor do I have my old 3.31 unit apart yet. I am rebuilding a
2.88 unit and it had no shims when recieved. The reference I
believe is in relation to the Ring gear centreline which I don’t
know how to ascertain. Other than these minor annoyances I hope to
have her done by spring. lol.–
The original message included these comments:
In reply to a message from Barnstormer9 sent Fri 12 Nov 2010:
–
74E 25515
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In reply to a message from Barnstormer9 sent Sun 14 Nov 2010:
You might get lucky if the 2.88 and 3.31 have the same ‘‘pinion zero
cone setting’’, which is 2.625’’ for the 3.31. IF that is the case,
you should be able to use the + or - numbers etched into the old
and new pinions to make up a suitably thick shim pack for the new
pinion. Those hand-etched numbers represent the variation(in
thousandths)from the ZERO cone setting for each individually lapped
ring and pinion set.
I used the mounting surface of the carrier bearing retainer as the
axle carrier centerline, then measured down to the face of the
pinion to get the pinion cone zero setting. Unfortunately, I had
no original shim pack to work with either so I had to arrive at the
proper shim pack thickness through trial and error.
You might want to try other forums here as I believe other Jags may
have used the 2.88. BTW, there are going to be annoyances ahead,
though how major or minor will be subject to an individual’s
tolerance for pain.–
Lee140FHC
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