hydraulic pump -strange sound?

[Kneale Brownson]

Mine's doing the same thing now.   Been getting louder and louder.  Quiets
temporarily if I spray a bit of lubricant.   I figure it's a dying
bearing/bushing behind the pulley.  I'm going to replace it when I do the
timing belt and a bunch of other stuff a little later this summer with a
spare rebuilt I keep on my parts shelf.  Then I'll try to resurrect it again.

At 10:50 AM 05/05/2003 -0700, Kevin G wrote:
>Noticed a kinda rumbling sound from the engine compartment and near as I
>can tell it is coming from the hydraulic pump.  Looked through the
>archives - saw allot about leaks but almost nothing about noise.  I
>sprayed some lubricant between the pump and the belt (where I thought the
>bearing would be) and it stopped the noise for a while.
>
>I am no mechanic and need some help here.  The pump is not leaking, the
>hydraulic fluid is till pretty much green, it just makes a lousy
>rumbling  sound.  Maybe a bearing? belt? or the pump is just on its last leg?
>
>Any help appreciated.
>
>Thanks
>Kevin
>
>89 Audi 200 TQ - 97,000 miles.
>
>
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