Recall the sound of an unbalanced drive shaft, as it pulses while driving at speed, back and forth... The haflinger makes that sound. It always has. I'm positive its in the front.
Would too much fluid in the center shaft cause this?
Front diff harmonics
Moderator: TechMOGogy
- audiocontr
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- Location: Buffalo NY
Front diff harmonics
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
- audiocontr
- Posts: 1868
- Joined: Fri May 01, 2009 1:30 pm
- Location: Buffalo NY
Re: Front diff harmonics
Is it possible that its a whistle across any of the drain holes?
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
Re: Front diff harmonics
I think it is far more likely to be a slightly bent drive shaft due to slightly worn fulcrum pins. That will load a bearing on one side and cause a bit of noise which then because the shaft can go up and down, the loading will change.
Lurch does the same thing, so I would guess it is quite common.
John
Lurch does the same thing, so I would guess it is quite common.
John
Admin for www.thehaflinger.com
- TechMOGogy
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Re: Front diff harmonics
That was my 1st guess too for a noise like that - bearing(s)
72 Pathfinder | 75 710M 2.7i | 96 350GDT Worker
- audiocontr
- Posts: 1868
- Joined: Fri May 01, 2009 1:30 pm
- Location: Buffalo NY
Re: Front diff harmonics
Thanks gents!
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
- Jimm391730
- Posts: 1456
- Joined: Wed Apr 14, 2004 10:58 pm
- Location: Idyllwild, CA
Re: Front diff harmonics
Check if the "pulses" happen at wheel rpm; an out of round or bent wheel will load and unload the drive train as its radius changes.
Jim M.
712W and 710M
712W and 710M