For the covers on the newer pumps that have four holes along the 
perimeter, you might also try a pin spanner that you can buy from a bike 
shop for less than $10.  They come in a several sizes.

Derek Sjostrom
Environmental and Natural Resources Institute
Stable Isotope Laboratory
University of Alaska Anchorage
707 A St.
Anchorage, AK 99501
[log in to unmask]

Shapna wrote:

> Mexican peso, it doesn't get bent when used with a vice grip, not like 
> the Canadian loonie or toonie.
> Shapna
> Water & Aquatic Sciences Research Program
> University of Victoria, Department of Biology
> PO Box 3020, Station CSC,
> Victoria, BC, Canada V8W 3N5
> (250) 721-6150
> ----- Original Message ----- From: "Richard Doucett" 
> <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, May 01, 2006 12:01 PM
> Subject: [ISOGEOCHEM] replacing oil wicks
>
>
>> Hi All,
>>
>> It's that time of year again, when I need to replace the oil wicks 
>> inside my Pfeiffer turbo pumps.  This usually involves a whole lot of 
>> profanity and torn skin as I try to unscrew the locking cover.  Has 
>> anyone figured out how to get these covers off without tremendous 
>> difficulty?
>>
>> Much obliged,
>> Rick
>>
>