Thread: Front driveshaft grease points?

Originally Posted by Fluids

The D2a Td5 front shaft is an upgraded unit over a D2 (didn't know it had bearings!) with a sealed (gaitered) slip join and NO provision for greasing said joint

It was ONLY fitted on the Td5 Auto's built after 1A720478 from the factory. So unfortunately for the D2a owners it's not a D2a differentiator

Bundalene has pulled one of these joints apart and posted pics of the internals:
http://www.aulro.com/afvb/discovery-...ml#post1204801

LR released a tech bulletin (L8668bu) covering fitting this design to earlier designs to address an issue of "An audible boom noise at approximately 2400 rev/min, evident in all gears".

The cause of the issue was that

"Currently, the front propeller shaft on diesel automatic derivatives has a sliding spline joint, which has a high plunge stiffness under torque. This may allow vibration to be transmitted along the propeller shaft into the vehicle interior, which can be sensed as an audible boom at 2400 rev/min."

The TB recommends

"Where a complaint of the above is confirmed, replace the front propeller shaft with a new specification propeller shaft now available from Land Rover Parts.
The new propeller shaft incorporates a revised sliding joint, which uses ball bearings to reduce the sliding resistance of the propeller shaft under torque."

2400rpm is in the middle of the dreaded Td5 Auto "Drone Zone", so I have a suspicion that the altered shaft was designed to address this.

cheers
Paul

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