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Old 14th March 2011, 16:46   #481
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Default Re: Got Jeep! CJ3B Hurricane.

Quote:
Originally Posted by svsantosh View Post
Unless you did something to the shackles there is little chance of shaft angle increase (assuming engine/GB perfectly fit). Check the rear diff leaf mounts for any sign of re-weld.
No shackle mods in DwArF but somehow i feel he is standing too tall for a CJ3B with 16x6 tyres. Gopal right now has lowered the engine and gear box height, by using some spacer trick at cross member and differential. Otherwise it would be very bad. I had the same issue when Raju did the job also, and i have a feeling this puts undue stress on box busting it up.

Gopal mentioned that as a last resort maybe we need to change the diff angle. But he wants to give it a thought before doing anything.

Hence i wanted to know if there is any reference or actual values that i can check / compare with. For the propeller angle.

Meanwhile copying from Arka's thread and reply.

Quote:
Originally Posted by ex670c View Post
While running the vibrations can be caused by
i) Front Prop-Shaft -- No FWH
ii) Misaligned cross-member (Check if you have the MM540 Type Spacer)
iii) Misaligned Prop-Shaft (UJ not in Phase)
iv) Play in the Differential Pinion
v) Play in the Splined Yoke
vi) Loose Leaf Spring Bolts
1) Ruled out, by removing the prop shaft. No change and more over i do have FWH free wheeling hub.

2) Have to check. Any way to identify this myself? Since vehicle is with me right now.

3) Should not be the case since Gopal does have an eye for such details, still will ask him to check

4) Overhauled and factory spec, more over vibration seem to come from gearbox end of prop shaft

5) Again ruled out since it was completely overhauled/

6) Nope fully reset and suspension is now tight.
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Old 14th March 2011, 17:09   #482
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Default Re: Got Jeep! CJ3B Hurricane.

Please post the pic of your GB 6-degree wedge mount/spacer, if possible get beneath and get a pic of the part thats inside the chassis.

Did the T90 come with the 6 degree wedge or was it a different angle?

EDIT - need pics of the spacer at diff too...
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Old 14th March 2011, 17:21   #483
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Default Re: Got Jeep! CJ3B Hurricane.

Yup will take some shots today evening or tomorrow and will post up Collective wisdom to rescue.
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Old 14th March 2011, 19:09   #484
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Default Re: Got Jeep! CJ3B Hurricane.

Started reading and am feeling dizzy now Tom Wood's Custom Drive Shafts - Driveline 101
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Old 14th March 2011, 20:44   #485
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Default Drive shafts, spring perch, gear box mounts etc

Ok guys all yours to analyze. Will start with the small spacer plates that were introduced on the leaf springs to reduce the angle.
Got Jeep! CJ3B Hurricane.-gbtc0001.jpg
Got Jeep! CJ3B Hurricane.-gbtc0002.jpg

Rear propeller aka drive shaft. I suspect the angle of the same causing the vibrations.
Got Jeep! CJ3B Hurricane.-gbtc0003.jpg
Got Jeep! CJ3B Hurricane.-gbtc0004.jpg
Got Jeep! CJ3B Hurricane.-gbtc0005.jpg

Gear box mounts, note the spacers here also.
Got Jeep! CJ3B Hurricane.-gbtc0006.jpg
Got Jeep! CJ3B Hurricane.-gbtc0007.jpg

Engine mounts but sorry picture is not great.
Got Jeep! CJ3B Hurricane.-gbtc0008.jpg
Got Jeep! CJ3B Hurricane.-gbtc0010.jpg

Front prop
Got Jeep! CJ3B Hurricane.-gbtc0009.jpg
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Old 14th March 2011, 22:55   #486
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Default Re: Got Jeep! CJ3B Hurricane.

Total messed up...

http://www.team-bhp.com/forum/4x4-ve...ml#post2251071 (1990 M&M Cj340)

The big block should be between the member and chassis- and the tiny one should complete the RECTANGLE above the chassis (the pic of mine had the wrong setup and causing everything to mess up)

-----------

Quote:
Originally Posted by DHABHAR.BEHRAM View Post
At the same time, please re-use the original 6 degree wedges which are there on your vehicle as the engine / transmission inclination of 6 degrees is achieved by using these wedges. Please be very careful when this work is done. There are 4 wedges, 2 above the long members and 2 below.

Behram Dhabhar

Last edited by svsantosh : 14th March 2011 at 22:57.
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Old 14th March 2011, 23:00   #487
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Default Re: Got Jeep! CJ3B Hurricane.

Am confused as ever but a picture with right fitting would really help
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Old 15th March 2011, 00:11   #488
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Default Re: Got Jeep! CJ3B Hurricane.

Spoke to Santhosh, he explained to me about the missing part. That never came with my jeep, i have marked it in this picture, so Gopal's and my observation was correct, only thing we never realized there is a part like this.

Can experts comment if this comes with CJ3B's?
Got Jeep! CJ3B Hurricane.-imgp2301.jpg
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Old 15th March 2011, 09:22   #489
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Default Re: Got Jeep! CJ3B Hurricane.

Quote:
Originally Posted by Jaggu View Post
Can experts comment if this comes with CJ3B's?
Attachment 517318
Jaggu,
There should be wedges on both side of the cross member, between it and the chassis which are missing (red arrow in your photograph, attached).

This wedge is to bring down the GB cross member so as to align with the rear diff and to reduce the inclination of the PS.

A high degree of inclanation as in your Jeep will result in excessive strain on the cross joints, rough ride and vibration. Do the needful correction and you maybe surprised at the reduced vibration in your Jeep.
Regards,
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Old 15th March 2011, 10:16   #490
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Default Re: Got Jeep! CJ3B Hurricane.

Thanks Fazalsaab i think the wedges is what Santhosh's jeep has right? Am calling up Gopal now, get the parts in place so that i can drop the vehicle. This was a problem i faced from day 1 of DwArF ownership and i feel contributing to the gearbox voes.

Today drove to office in DwArF and morning sun is not that bad at all, with the cannopy fully down

EDIT: Spoke to Gopal, as soon as i opened up the topic he confirmed that he also felt the same. He has 2 for one side ready will procure the other and call me.

One last question the bigger piece (from the set of 2 wedges for one side) is for top or bottom?

Last edited by Jaggu : 15th March 2011 at 10:35.
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Old 15th March 2011, 10:34   #491
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Default Re: Got Jeep! CJ3B Hurricane.

Hi Jaggu,

IIRC the Petrol CJ3B, never had any spacers for the Transmission Cross Member.

I guess the same for the diesel CJ3B.

Please remove the spacers from the Leaf and Cross-Member and drive the vehicle, and let us know the results.

Regards,

Arka
Attached Thumbnails
Got Jeep! CJ3B Hurricane.-mmchassis01.jpg  

Got Jeep! CJ3B Hurricane.-mmchassis02.jpg  

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Old 15th March 2011, 10:48   #492
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Default Re: Got Jeep! CJ3B Hurricane.

Quote:
Originally Posted by ex670c View Post
Hi Jaggu,

IIRC the Petrol CJ3B, never had any spacers for the Transmission Cross Member.

I guess the same for the diesel CJ3B.

Please remove the spacers from the Leaf and Cross-Member and drive the vehicle, and let us know the results.

Regards,

Arka
If i remove the spacer its like a overloaded washing machine at full spin feeling. The moment i lift off the throttle at low speeds, as speed climb its ok. Spacers have reduced the issue say around 60-70%. Esp at higher speeds vehicle is super smooth.

Arka what is the item no 5? is it a schematic issue that we are not able to understand? Also is this something introduced by M&M? Referring to DB's post.

I dont have much options right now but to try this coz i dont want to screw up a perfectly fine gearbox just because of 2 wedges
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Old 15th March 2011, 10:59   #493
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Default Re: Got Jeep! CJ3B Hurricane.

Jaggu - here is how my jeep is supposed to be setup... just for the sake of it (since it seems right) try it and see.

http://www.team-bhp.com/forum/4x4-ve...ml#post2278652 (1990 M&M Cj340)

EDIT
Quote:
Originally Posted by Jaggu View Post
I dont have much options right now but to try this coz i dont want to screw up a perfectly fine gearbox just because of 2 wedges
Mine was 'perfectly' file when it rolled out from Raju's and after 500 or 600Kms it was royally back to normal... trust me, it is not a good feeling.

Last edited by svsantosh : 15th March 2011 at 11:02.
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Old 15th March 2011, 11:18   #494
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Default Re: Got Jeep! CJ3B Hurricane.

Quote:
Originally Posted by Jaggu View Post
If i remove the spacer its like a overloaded washing machine at full spin feeling. The moment i lift off the throttle at low speeds, as speed climb its ok. Spacers have reduced the issue say around 60-70%. Esp at higher speeds vehicle is super smooth.

Arka what is the item no 5? is it a schematic issue that we are not able to understand? Also is this something introduced by M&M? Referring to DB's post.

I dont have much options right now but to try this coz i dont want to screw up a perfectly fine gearbox just because of 2 wedges
Hi Jaggu,

Did you have this "vibration" issue when you bought your JEEP?

You will notice that part.no 5 is metal plate, listed as Spacer, engine, rear support cross member (2WD) for CJ4, CJ4A, CJ500D & CJ520.

Please remove both the spacer on the cross member and on the Axle Tube and drive the vehicle for a few days.

Regards,

Arka

PS - Please read the Tom Wood's High Angle Drive line article, they have explained basically how to set up drive line angles. Have you followed that?

Last edited by ex670c : 15th March 2011 at 11:36.
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Old 15th March 2011, 11:38   #495
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Default Re: Got Jeep! CJ3B Hurricane.

Jaggu, let me put this is another way:-

Is the Engine mounting / Inclination for CJ3B (petrol) & CJ340 same? If the front portion is same, the rear must also trace a similar path.

Spike

PS- If you are not clear, please don't do R&D on personal vehicles (finally you will have to pay, others will quietly observe and you will suffer). It's your call now.

Last edited by SPIKE ARRESTOR : 15th March 2011 at 12:02. Reason: add info
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