Nissan diesel harmonic balance

Submitted: Sunday, Jan 23, 2005 at 00:01
ThreadID: 19687 Views:3040 Replies:7 FollowUps:2
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1996 nissan patrol failed front pulley assembly .Retaining bolt must have come loose no noticeable vibration must have been loose for some kms .At 120000kms flogged out keyway pulley assembly came off.Only warning, overheating, belts gone, alt and air cond both gone.Has anyone had similar experience? On examination the nose of the crankshaft appears ok pulley centre severely damaged but will buildup and machine ok.
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Reply By: 28patrol - Sunday, Jan 23, 2005 at 00:40

Sunday, Jan 23, 2005 at 00:40
Nope, 117K 1999 2.8tdi. What is yours?
AnswerID: 94490

Follow Up By: cokeaddict - Sunday, Jan 23, 2005 at 12:53

Sunday, Jan 23, 2005 at 12:53
For what its worth....DONT use the old pulley again. Get yourself another one. Just my shillings worth.
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FollowupID: 353470

Reply By: oscar - Sunday, Jan 23, 2005 at 00:51

Sunday, Jan 23, 2005 at 00:51
1996 2.8 ltre turbo
AnswerID: 94492

Reply By: Patrol22 (Queanbeyan - Sunday, Jan 23, 2005 at 01:19

Sunday, Jan 23, 2005 at 01:19
Nope 1998 GU2.8 with 160000kms. Although I have heard of this occuring on one other occasion with at 1998 GU 2.8. Damage bill was severe...from memory approx $6K
AnswerID: 94495

Reply By: GO_OFFROAD - Sunday, Jan 23, 2005 at 07:08

Sunday, Jan 23, 2005 at 07:08
Has happened to afew, and flogs the end of the crank so it normally needs replace or repair.
AnswerID: 94499

Reply By: oscar - Sunday, Jan 23, 2005 at 10:14

Sunday, Jan 23, 2005 at 10:14
Will keep you guys informed this vehicle belongs to close friend and we are going to do some pretty bold stuff.I am am a diesel fitter guess you would say from the old school and my trade has kept me in earthmoving.I have assessed the fitup and the harmonic balance is very all almost insignificant.It has four vbelt pullies bolted to it making up its size. The keyway is intact the nose of the shaft is visibly marked but not misshapen.Relying on the fact no vibration occured even though the assembly was quite loose my guess is the engine requires little balancing.
I am going to use Loctite super retaining compound a new primary pulley new retaining washer and bolt .After we are sure the assembly remains firm I intend to studloc the retaining bolt.Mendham Engineering here in Brisbane can repair the nose of the crank if we fail.Remove the engine flip it up take out the crank repair refit with mains and journals will be the next move when time permits we wont be stripping and recond at these kms .Quotes of $6000 TO $7000 seem to be the numbers but not in this camp .Thanks guys will keep you updated coz I reckon the problem exists in all these Nissans and there is probably a bulletin issued by Nissan to dealers to check at service intervals.
AnswerID: 94510

Follow Up By: Austravel - Sunday, Jan 23, 2005 at 11:20

Sunday, Jan 23, 2005 at 11:20
Thanks for the info, which motor is it 4.2 or 3.0 or 2.8 ???????
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FollowupID: 353457

Reply By: 80scruiser - Sunday, Jan 23, 2005 at 12:32

Sunday, Jan 23, 2005 at 12:32
I had a similar thing happen to my old SD33T.
I caught it before it let go, just pure arse I suppose.
A little bit of damage to the crank but used 670 loctite and new key way. No futher dramas until I sold it and bought an 80 series.
AnswerID: 94526

Reply By: Nino & Kerry- Monday, Jan 24, 2005 at 17:09

Monday, Jan 24, 2005 at 17:09
Oscar,
I had the same thing with my last 4by..a pajero. I had to replace the pully at $360 ( was quoted $700 by mitsubishi ) and "boged" the woodruff key with shellys metal two part putty. worked a treat but sold the truck.......for a 2.8 TD Patrol. Guess what i,m doing to night !
Good luck with the repairs
Cheers Nino.
AnswerID: 94691

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