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fcooper's avatar
fcooper
Explorer
Jan 19, 2016

Alternator, Leece Neville 160 amp to Delco Remy 28si

After sitting a few months, my alternator was dead when I fired up the coach. After some troubleshooting, I determined that the alternator was dead. It was a Leece Neville 160 amp A0012824LC model.

My intent was to take it to a local rebuild shop, but soon learned that all of them that I could locate had gone out of business. From my local auto parts stores, most could not provide a unit. One could provide a rebuilt (Wilson part number 90-04-7070). Wanting to get the coach ready for use quickly, I found that the Delco Remy 28si series can work to replace the Leece Neville.

The Delco Remy 8600308 is the 12 volt 160 amp version

The Delco Remy 8600307 is the 12 volt 200 amp version

There is a 180 amp version, and I think that part number was 8600311, but don't use that part number with verification.

I installed the 8600307 as that was what I could get quickly, and it was cheaper than the rebuilt by Wilson. It works great, and bolted on to the 3126 Cat engine with no problems.

The connections below are for what I had to do on my 2000 Holiday Rambler on the Freightliner chassis. There are other considerations for later Monaco units that use a 6 volt line from the alternator to control a light on the dash. (the delco remy can work for this also).

The lead from the coach ignition switch is not used, and should be taped off. The lead that previously went to the "to DUVAC" terminal on the Leece Neville should be connected to the "remote sense" terminal on the Delco Remy.

Installation instructions for the 28si alternator series can be downloaded from
http://www.delcoremy.com/find-a-part/product-details/8600307/

(Look at installation instructions on right side of page)

Maybe this info will help someone else with a bad Leece Neville alternator.

Fred
  • In my fleet maintenance days, we regularly replaced the Leece Neville alternator with a Delco Remy unit of the same rating, mounting and electrical configuration for cost savings alone. Performance, reliability and durability were comparable.
  • The important thing is to find an alternator AND hook it up properly for how your coach is wired.

    All alternators have: B+ lug-- the large-gauge wire for 12 VDC positive.

    Some have a ground lug, others ground through the mechanical attachment to the engine.

    Some have an external sense terminal/wire-- critical if you have a diode-based battery isolator.

    Some have an "ignition hot" excite terminal/wire

    So, first step if to verify how your present alternator is wired. Only deviate from that on very sage advice!
  • I don't need one right now but I am filing this information for later, just in case I do need one. Thank you Fred.