89 Spider oil pressure sending unit - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 10 (permalink) Old 04-24-2018, 11:05 AM Thread Starter
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89 Spider oil pressure sending unit

Is there a special tool to remove the oil pressure sending unit? My wrenches are too thick to fin on the flats to loosen the unit. I don't want to grind an overpriced snap-on wrench! I'm willing to sacrifice a craftsman if no special tool exists though.

87 & 89 Spider
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post #2 of 10 (permalink) Old 04-24-2018, 11:29 AM
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Is there a special tool to remove the oil pressure sending unit? My wrenches are too thick to fin on the flats to loosen the unit. I don't want to grind an overpriced snap-on wrench! I'm willing to sacrifice a craftsman if no special tool exists though.
Try to remove by hand.

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post #3 of 10 (permalink) Old 04-24-2018, 11:50 AM
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You need to grind a 14 mm open end wrench. I have a collection of cheap wrenches that have been ground in different ways to get at different nuts and bolt heads. My 14 mm is a Duralast.

Ed Prytherch
79 Spider
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post #4 of 10 (permalink) Old 04-24-2018, 11:54 AM
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I got a thin set from Amazon. Cheap and came in a roll-up pouch. I have used them many times.

Gary
87 Spider Veloce
Spring Hill, TN

As of 9/29/19: NEXT: Fix foot-well lights, gas lid.
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post #5 of 10 (permalink) Old 04-24-2018, 11:56 AM
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I think my first one was a bicycle wrench from REI. I used that to remove the oil sensor. Later bought a set.

Gary
87 Spider Veloce
Spring Hill, TN

As of 9/29/19: NEXT: Fix foot-well lights, gas lid.
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post #6 of 10 (permalink) Old 04-24-2018, 12:05 PM
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not all oil pressure senders are 14mm, some are 17mm

I too bought a cheapish set of extra thin open metric wrenches in a foldup pouch, very useful to have.

once you crack it open, it spins off easily by hand.
replace the copper seal, or at least re-anneal the old one.

Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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post #7 of 10 (permalink) Old 04-24-2018, 01:03 PM
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Thin open end wrenches are also called "tappet wrenches".

Jim

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post #8 of 10 (permalink) Old 04-25-2018, 05:29 AM Thread Starter
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There ya go I've heard of tappet wrenches! There is no way where that S.O.B is located I'm gonna spin that thing off by hand!I just purchased a quality, not Snap-On quality, tappet wrench from Amazon. Total was 18 bucks! Any excuse to buy a tool! Here is the description of the wrench. Mine is 14mm. "Stanley Proto Facom FM-31.14X15 Tappet Satin Open-End Wrench, 14 by 15mm"

87 & 89 Spider
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post #9 of 10 (permalink) Old 04-25-2018, 07:13 AM
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btw: remember to disconnect battery!
Getting that wrench in there (I go in from the front, with a long arm, under the plenum), you get very close to the starter connections

Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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post #10 of 10 (permalink) Old 04-28-2018, 05:51 PM Thread Starter
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Got the tappet wrench yesterday. It fit perfect! The battery was already out of the car. Thanks for the help? I may be changing the starter soon, it sounded terrible the last time I started it.

87 & 89 Spider
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