Drivetrain Vibrations - Page 3 - Land Rovers Only

p76rangie · 04-17-2007, 01:13 AM

The pins may break under strain on a dry rocky trail, but that is not usually the reason for them breaking. The spider gears are a straight metal to metal contact with the pin. They are not designed to spin at any great speed or for any length of time. Any spinning of wheels causes the spider gears to eat into the pin. This either weakens the pin for breakage at a future date or the spider gear will weld itself to the pin and break there and then.

You can usually inspect the state of the pins by looking through the filler plug. But if your diff oil shows signs of being overheated, there is a good chance that it is already past its use by date.

01001010 · 04-17-2007, 07:17 AM

Hmm...

Some more info... it only pulsates when I have my foot on the accelerator, once off, its as off I was on stock tires and had a revived suspension....silky smoooth.

01001010 · 08-08-2007, 12:33 PM

Well, as soon as my U-joint blew up today, I figured out what the cause of the vibration was! (< joke - display flashing "LAUGH" sign )

Still need to take care of rear wheel bearings and I'll be back on my way to to smooth sailin.

04-17-2007, 07:17 AM	#32 (permalink)
01001010 Moderator Join Date: Jan 2005 Location: Lawrenceville, GA Posts: 4,522 Gallery: 15	Hmm... Some more info... it only pulsates when I have my foot on the accelerator, once off, its as off I was on stock tires and had a revived suspension....silky smoooth. __________________ JC... 1996 Discovery SE - The Blue Marlin - gone =( 1965 Series IIa 109 RHD 2.25L Dsl - Wilks 1965 Series IIa 88' LHD 2.25L Petrol - Fionna

08-08-2007, 12:33 PM	#33 (permalink)
01001010 Moderator Join Date: Jan 2005 Location: Lawrenceville, GA Posts: 4,522 Gallery: 15	Well, as soon as my U-joint blew up today, I figured out what the cause of the vibration was! (< joke - display flashing "LAUGH" sign ) Still need to take care of rear wheel bearings and I'll be back on my way to to smooth sailin. __________________ JC... 1996 Discovery SE - The Blue Marlin - gone =( 1965 Series IIa 109 RHD 2.25L Dsl - Wilks 1965 Series IIa 88' LHD 2.25L Petrol - Fionna

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04-17-2007, 01:13 AM	#31 (permalink)
p76rangie Ian Matthews Join Date: Jan 2006 Location: Melbourne Australia Posts: 2,001 Gallery: 0	The pins may break under strain on a dry rocky trail, but that is not usually the reason for them breaking. The spider gears are a straight metal to metal contact with the pin. They are not designed to spin at any great speed or for any length of time. Any spinning of wheels causes the spider gears to eat into the pin. This either weakens the pin for breakage at a future date or the spider gear will weld itself to the pin and break there and then. You can usually inspect the state of the pins by looking through the filler plug. But if your diff oil shows signs of being overheated, there is a good chance that it is already past its use by date.

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