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Old 07-23-2010, 05:21 AM
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Join Date: Apr 2010
Location: Cyprus
Posts: 226
Sorry to sound ignorant, but what is this air pump you guys are talking about?

Smoke Silver 1994 E220 Coupe Automatic
0 kilometers 6 September 1994
100,635 kilometers - 6 September 2010
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Old 07-23-2010, 09:50 AM
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Join Date: Dec 2002
Location: New Castle County, DE
Posts: 1,079

If anyone wants to go with a used air pump, $40 delivered to your door in the conUS. It didn't make any unusual noise. Its from a 1992 400E being parted out.
'79 6.9 Sold (after 27 years)
'83 280SL, 5 spd.
'94 E320 Sdn. 5 spd conversion
'02 E320 Sdn.(on loan to mom!)
'87 300E (5 spd. conversion) Sold
'05 E500 Wagon
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Old 07-23-2010, 11:24 AM
david s poole
Join Date: Mar 2005
Location: dallas
Posts: 1,822
how about you buy a shorter belt,it may take a little research but should work.
David S Poole
European Performance
Dallas, TX

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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Old 07-24-2010, 11:27 PM
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Join Date: Aug 2008
Posts: 436
I guess I'm confused on this - in both cases did the idler bearing fail?

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Old 07-26-2010, 03:08 PM
pesuazo's Avatar
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Join Date: Oct 2002
Location: Near Raleigh, NC
Posts: 580
Originally Posted by samiam44 View Post
I guess I'm confused on this - in both cases did the idler bearing fail?

He probably is having the same issues I have: noisy idler bearing on air pump.

There is no way to remove air pump and put a shorter belt in the M119 engine, as a pulley is needed in that spot (unless somehow you fab it)

The solution: Replace bearings on air pump

All posts talk about the M103 and M104 rebuild air pump (and the bearing part number)

No one has provided the bearings part numbers for the M119 air pump (or no one has replaced it?).

Althoug I think it may be the same.

1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
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