Dana 18 input gear location.... - Pirate4x4.Com : 4x4 and Off-Road Forum

Mieser · 03-21-2011, 02:39 PM

What sets the depth (front to back ) of the input gear on a Dana 18? Does it locate against a shoulder on the transmission output shaft?

Thanks.

MrWillys · 03-21-2011, 04:32 PM

Yes, and tighten it as tight as you can get it with a breaker bar. I use my feet!

Mieser · 03-21-2011, 07:32 PM

Yes, but what does the gear locate against? The output bearing on the back of the transmission or some kind of step on the output shaft?

Thanks.

FrankenCJ · 03-29-2011, 09:36 AM

The t-90 (which bolts up to the dana 18) does not have a shoulder or locating device on the shaft. The input gear locates off of the transmission output bearing. Also you might check the torque spec for the castle nut that holds the input gear in place. Im not sure but over torquing may cause damage to your bearing. The castle nut in the dana 18s I've taken apart have been finger tight. Im not saying its right but just saying.

Kaiser5 · 03-29-2011, 10:20 AM

Quote:

Originally Posted by FrankenCJ

The t-90 (which bolts up to the dana 18) does not have a shoulder or locating device on the shaft. The input gear locates off of the transmission output bearing. Also you might check the torque spec for the castle nut that holds the input gear in place. Im not sure but over torquing may cause damage to your bearing. The castle nut in the dana 18s I've taken apart have been finger tight. Im not saying its right but just saying.

Yep, make sure that nut is torqued correctly. I had the gear walk off the shaft in Moab when the nut decided it wasn't happy being part of the team anymore.

The nice thing about the 18 in this situation is the ease of access with the lower and rear covers. I had to pull the lower to fish out the nut and the rear cover to put it all back together. They run surprisingly well on motor oil.

03-21-2011, 02:39 PM	#1 (permalink)
Mieser Registered User Join Date: Jun 2001 Member # 5326 Location: Southwest Colorado Posts: 3,968	Dana 18 input gear location.... What sets the depth (front to back ) of the input gear on a Dana 18? Does it locate against a shoulder on the transmission output shaft? Thanks. __________________ 42 MB, 225, T18, big kid go cart with clown tires 92 Dodge W250 daily driver on 39s

03-21-2011, 04:32 PM	#2 (permalink)
MrWillys Registered User Join Date: Feb 2002 Member # 9991 Location: Cold Springs, NV Posts: 2,367	Yes, and tighten it as tight as you can get it with a breaker bar. I use my feet! __________________ [url]www.scotthansen.net[/url]

03-21-2011, 07:32 PM	#3 (permalink)
Mieser Registered User Join Date: Jun 2001 Member # 5326 Location: Southwest Colorado Posts: 3,968	Yes, but what does the gear locate against? The output bearing on the back of the transmission or some kind of step on the output shaft? Thanks. __________________ 42 MB, 225, T18, big kid go cart with clown tires 92 Dodge W250 daily driver on 39s

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03-29-2011, 09:36 AM	#4 (permalink)
FrankenCJ Registered User Join Date: Mar 2011 Member # 186160 Location: CA Posts: 7	The t-90 (which bolts up to the dana 18) does not have a shoulder or locating device on the shaft. The input gear locates off of the transmission output bearing. Also you might check the torque spec for the castle nut that holds the input gear in place. Im not sure but over torquing may cause damage to your bearing. The castle nut in the dana 18s I've taken apart have been finger tight. Im not saying its right but just saying.