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11 /14/ 19, 12:23amLogin ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1234[5]678 ]
Subject: Kohler Generator

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Date Posted: 10/ 23/ 05, 5:13am

I have a 12.5 Kohler generator on a 83FC BB with a perkins diesel. Can anyone tell me how to change the fuel filter and water separator and also the parts no. of the oil filter and fuel/water filter.

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[> Subject: Re: Kohler Generator

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Date Posted: 10/ 26/ 05, 11:42am

I have the same 12.5 Kohler with the Perkins on my 83 PT40. Here's the cross referencee chart that I built for my genset filters.

Fuel Filters...3166..33166.....-..........-.........-
Oil Filter.....1068......-.........-............-.......SDF96

As far as changing the filters, if you have a Racor filter on yours, remove cover, remove filter cartridge, insert new racor filter cartridge, re-fill filter housing with fresh diesel fuel (or ATF), replace new rubber o-rings on cover (two - one on cap, one on center bolt) and re-install cover. That's the easy one.

As for the fuel filter on the side of the engine, it's a real pain as it is an insert filter, sandwiched between the housing top which is attached to the engine block and the bottom cap which comes off with the filter. The filter and the bottom cap are held in place with a bolt that extends down through the top, through the filter and screws into the bottom cap. You should have instructions in your blue box for changing this filter, but the way that works for me is messy, but as follows: hand under filter assembly, remove bolt on top (7/16" maybe? - also may need to remove hollow stud with two fuel lines covering the center bolt in order to remove the 7/16 bolt), discard old filter, remove rubber o-rings in top cap (two - one in cap, one on center bolt) and replace with new (light coat of grease holds them in place), place new filter in bottom cap (may be a new o-ring there also, can't remember). Then (here's where it gets messy) I hold the filter and bottom cap tightly together, fill with fuel and carefully place it up in the top cap and re-tighten the center bolt. Messy, but saves bleeding time. You can finish filling the filter by carefully pouring more fuel down the hollow stud mounting hole. You can then try to pump the little AC primer next to the filter, but I've never seen it do much to prime the system. Almost assuredly, you will need to crank the engine while loosening the injectors until you bleed the air out of them and the engine re-fires as you re-tighten the injectors. Really a fun job. NOT. Sometimes the Perkins engines can be a real bear to get re-primed. Don't overheat the starter by cranking too long at any one time, and don't run your battery down if it doesn't start fairly quickly (throw a battery charger on the battery while doing the bleeding, if necessary to keep from running it down).

Good luck,

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[> Subject: Re: Kohler Generator

Jack Richardson
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Date Posted: 10/ 31/ 05, 5:14pm

When changing the fuel filter, if you loosen the banjo (that's what we called them on our British cars)fitting on the discharge side of the filter, and use the manual overide (tickler)on the fuel pump until fuel comes out, it will usually get most of the air out. If you have fuel seepage around the fittings, buy new copper washers, and the little rubber O rings for the small fittings on the fuel lines. Continued wrenching will eventually strip the pot metal. Also if you use NAPA filters, compare the 1048 to the 1806 that they call for also in their book. The 1806 is longer. Ask your NAPA dealer to give you the price break they give to big filter users. The 1798 for the Cat 3208, and the 1806 are in the $6-7 dollar range. That means use their account # and pay cash. There are plenty of Kohler users and repairers out there that will be glad to help you fix any problem. A manual is money well spent, if you have any questions E Mail me Jack

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