Does the R230 use a crush sleeve or shims to set pinion depth?

[cyrus]

Does the R230 use a crush sleeve or shims to set pinion depth? Also what is the torque spec for the pinion nut?

[JMortensen]

http://forums.hybridz.org/showthread.php?t=105954

Crush sleeves are NEVER used for pinion depth. Ever. Shims will set pinion depth, crush sleeves will set pinion bearing preload. On the R180 and R200, pinion bearing preload isn't set with a crush sleeve either. It's set with preload shims, so there is no crush sleeve at all.

[zcarnut]

It's interesting to note that the R200V used in the Z32 uses shims to set the pinion bearing preload (like the R180 and early R200's) but the 230V uses a collapsible sleeve:

 

http://300zx-twinturbo.com/cgi-bin/manual.cgi?list=pd&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=15&design=default&total=43

[cyrus]

Well here is the scoop I just used an impact gun to remove a the input flange, then install another one. I want to know if I messed up the preload. I felt no change in the turning resistance.

[JMortensen]

Crush sleeves usually take A LOT of torque to crush IME, like 350 to 400 ft lbs. Unless you really hammered on it probably not. If you want to check, get a beam or dial style in/lb torque wrench. Then use a 1/4 to 3/8 to 1/2 inch adapter and measure the resistance to turning the pinion. Not the initial resistance, but while slowly spinning it get a reading from the torque wrench. Then check that against the factory spec. Should be able to get that from a FSM. You have to do this measurement with the carrier out, BTW.

[zcarnut]

...If you want to check, get a beam or dial style in/lb torque wrench. Then use a 1/4 to 3/8 to 1/2 inch adapter and measure the resistance to turning the pinion. Not the initial resistance, but while slowly spinning it get a reading from the torque wrench. Then check that against the factory spec. Should be able to get that from a FSM. You have to do this measurement with the carrier out, BTW.

 

Fortunately Nissan specs the Z32 front pinion bearing preload with and without the differential carrier installed. Without the carrier the pinion bearing preload is speced at 9.5 to 12.2 inch-lbs for the R200V and 16 to 23 inch-lbs for the R230V.

 

With the carrier installed the preload meassurment should increase no more than 2.6 inch-lbs. This makes sense as the total side bearing preload is reduced by the gear ratio when it is measured at the pinion.

 

It’s all in the FSM:

 

http://300zx-twinturbo.com/cgi-bin/manual.cgi?list=pd&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=32&design=default&total=43

 

and

 

http://300zx-twinturbo.com/cgi-bin/manual.cgi?list=pd&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=34&design=default&total=43

[JMortensen]

Zcarnut to the rescue! That's the first one I've seen where you can measure with the carrier in... thanks for the correction.

[zcarnut]

One more thing then I’ll go back to lurking

 

Nissan started adding the “installed†pinion preload spec in the late 1980's Z31 FSM. Since the Z31 used the R200 diff this info is useful to the S30 and S130 diff rebuilders:

 

R200 pinion bearing preload spec without diff carrier: 8.7 to 11.3 inch-lbs

R200 pinion bearing preload spec with diff carrier: 13.5 to 20.4 inch-lbs