1993 KA24E D21 Truck Transmission installation trouble

Forum for the Xterra, Frontier and Hardbody, the smaller workhorses of the Nissan lineup!
development1
Posts: 23
Joined: Sat Jan 19, 2008 2:19 pm

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Hi!,

I am on the downhill stretch of installing my transmission in 1993 Nissan D21 Hardbody pickup, and I am having a lot of trouble forcing the input shaft into the copper bushing. I have one guy spinning the crankshaft, and another wiggling the transmission into place but it is not budging. I removed the transmission for a better view of what is going on. Apparently the shaft is engaging the clutch teeth, however, the tip of the input shaft is covered with copper fillings (The busing is new and was hammered into place with a hammer and socket). Is there anything I can do to force the transmission into place?


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Rev_D21
Posts: 5946
Joined: Sun Jan 12, 2003 9:49 pm
Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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Those pics are really small. Are the splines on the shaft lining up with the splines on the clutch? Are the splines clean so the clutch does not hang up on the input shaft?

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Warped161
Posts: 1449
Joined: Thu Jul 14, 2005 1:25 pm
Car: 90 s13 the never ending project
Location: Underwater in NY
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Reverend D wrote:Those pics are really small. Are the splines on the shaft lining up with the splines on the clutch? Are the splines clean so the clutch does not hang up on the input shaft?
did u click on the pics? they get bigger

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Rev_D21
Posts: 5946
Joined: Sun Jan 12, 2003 9:49 pm
Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
Contact:

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They became big red X's for me.

development1
Posts: 23
Joined: Sat Jan 19, 2008 2:19 pm

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I figured it out, thanks!

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Big-Bird
Posts: 684
Joined: Thu Aug 03, 2006 4:41 pm
Car: 2000 Xterra on 'Roids & 2004 Quest SL

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FOR ANYONE ELSE THAT COMES ACROSS THIS PROBLEM:

When installing the clutch and pressure plate make sure to use the correct alignement tool. Also check that the 'bronze' pilot bushing is the correct diameter for your transmission's input shaft (IE Test fit).

Take some emery cloth and make sure the input shaft that rides on the bushing is clean and free of burrs.

Devel: Post what you did to fix it.

development1
Posts: 23
Joined: Sat Jan 19, 2008 2:19 pm

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Well with the Luk input shaft bushing it has a finished side and an unfinished tapered side. I ended up installing the bushing with the tapered side facing the clutch and transmission, therefore it was hard to line up. My bro came up with the idea of taking the bushing out; we then released our mistake and reversed the side with the right side facing the clutch and transmission. We then spun the crank with a 27 rachet, and wiggled it in within 10 minutes. The clutch alignment tool had nothing to do with the problem it was the input bushing and us not realizing that Luk had a finished side and a unfinished side.

nismopu
Posts: 310
Joined: Fri Jun 24, 2005 4:44 pm
Car: 1987 Nissan 300ZX
1997 Nissan Maxima
1976 Datsun 280Z Turbo

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Yes, this is a huge problem with ALL of Nissans manual setups. Toyota had the right idea IMO, a real bearing and only one way to put it in, lol! Also, the input shaft bushings are ALL the same diameters for all nissan RWD transmissions, I don't know much about the FWD ones. I would imagine they're the same as well too though.

fs5r30afs5r90afs5w71/a/b/cfs5r50aAll identical input diameters and lengths. peace.


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