VRO/OMS pump compatibility question

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Beernutz

Petty Officer 1st Class
Joined
Aug 14, 2001
Messages
287
Before I visited this forum, I'd never heard of an OMS pump, and had ordered a "4-wire VRO pump" from an online dealer, which was supposed to be for my motor. During a lengthy related thread, I've learned that I should have an OMS pump, P/N 5004558. The pump kit I ordered was P/N 5007420.

After a week, the pump was delivered this afternoon. It includes a bag of various fittings for different applications, and the pump with a sticker on it indicating that it is P/N 5004554.

My motor is a 2001 Johnson 150, model # RJ150VXSIF.

Does anyone know whether or not this pump is compatible with my motor?
The exterior appearance is identical.
 
B

Beernutz

Petty Officer 1st Class
Joined
Aug 14, 2001
Messages
287
Re: VRO/OMS pump compatibility question

Thank you, tashasdaddy. In the meantime, I found another online dealer who sells this part. Their catalog indicates that P/N 5004558 has been replaced by P/N 5007420.

This VRO/OMS terminology thing has really thrown me a curve. P/N 5007420 includes a factory BRP instruction sheet that identifies it as a "VRO2 Pump Kit" that "services a VRO2 pump that has the 4-wire warning system". I became concerned, so have written e-mails to the online dealer and BRP for clarification, before I rip into the parts bag and install it. No replies yet.
 
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seahorse5

Rear Admiral
Joined
Jan 24, 2002
Messages
4,698
Re: VRO/OMS pump compatibility question

Beernutz said:
Thank you, tashasdaddy. In the meantime, I found another online dealer who sells this part. Their catalog indicates that P/N 5004558 has been replaced by P/N 5007420.
Click to expand...


Your part numbers are correct. The 5007420 has an improved material used in the diaphragms.

Yep, the old instruction sheets still use the old terminology - but that ain't no big thing.
 
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Beernutz

Petty Officer 1st Class
Joined
Aug 14, 2001
Messages
287
Re: VRO/OMS pump compatibility question

Thank you, Seahorse. I'll go ahead and put 'er on.
 
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dajohnson53

Lieutenant Commander
Joined
Apr 28, 2004
Messages
1,627
Re: VRO/OMS pump compatibility question

Beernutz said:
Before I visited this forum, I'd never heard of an OMS pump, and had ordered a "4-wire VRO pump" from an online dealer, which was supposed to be for my motor. During a lengthy related thread, I've learned that I should have an OMS pump, P/N 5004558. The pump kit I ordered was P/N 5007420.

After a week, the pump was delivered this afternoon. It includes a bag of various fittings for different applications, and the pump with a sticker on it indicating that it is P/N 5004554.

My motor is a 2001 Johnson 150, model # RJ150VXSIF.

Does anyone know whether or not this pump is compatible with my motor?
The exterior appearance is identical.
Click to expand...

I have a new theory on this P/N 5004554...

5007420 and 5007423 are P/N for "kits". 023 is intended to replace a 3 wire pump and convert it to a 4 wire system. It differs from the 020 "kit" only in the wiring adapter.

The actual pumps are the same. As seen above, OP's "kit", P/N 5004558 (which was superceded by kit P/N 5007420) has a pump with a 5004554 label on it.

I just received a P/N 5007423 "kit". It ALSO has a pump with a 5004554 label on it. It also has a wiring adapter for converting from 3 wire to 4.

It therefore makes sense - the pump itself is P/N 5004554, identical for both kits (5007423 and 5007420), the two kits differing only in the wiring adapter.

I post this just in case it helps some future person avoid confusion when they receive a kit with a pump that has a different nubmer than the kit.
 
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