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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Gas > Atomic 4
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  #11  
Old 08-21-2013
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Re: Atomic Diesel 5432 Fresh Water Pump

There used to be a document titled History of the Universal Motor Company in numerous places on the web... It seems to have been deleted from most locations (I wonder why).

Here are the salient points:

First Universal diesel: 5416, it was a 45 cu in, 16 hp, 2 cylinder, based on the Kubota Z-751 block and built from 1976 to 1982. Evolved into the Model M20, which was produced in 1982 and 1983.

5411 was a 31 cu in, 11 hp 2 cylinder raw water cooled diesel, based on the Kubota Z-500 block. Built from 1977 to 1982. Replaced by the Model M15, which was produced in 1982 and 1983.

The Model 5424, was a 68 cu in, 24 hp, 3 cylinder, based on the Kubota D-1101 block. Built from 1977 to 1983. Replaced by the Model M-30, which was produced from 1983 to 1987. The Model M-30 was the same size, but later M-30 engines were based on the Kubota D-1102 block. It was built from 1983 to 1987.

Universal 5421, a 52 cu in, 21 hp, 3 cylinder, based on Kubota D-850 block. Built from 1978 to 1981. Replaced by the Model M25, which was produced from 1981 to 1986. Replaced by the Model M-25XP, a 57 cu in, 23 hp, 3 cylinder, based on the Kubota D-950 block, built from 1986 to 1999.

5432, a 91 cu in, 32 hp, 4 cylinder, based on the Kubota V-1501 block, was built from 1978 to 1982. Also called the Atomic diesel. Replaced by the Model M40, which was produced from 1982 to 1998. The Model M-40 was also a 4 cylinder model, and the same size at 91 cu in and 32 hp but it was based on the Kubota V-1502 block.

Model 5444, a 115 cu in, 44 hp, 4 cylinder, based on the Kubota V-1902 block, was built from 1980 to 1982. Replaced by the Model M50, which was built from 1982 to 1997.

M-12, a 24.4 cu in, 10 hp, 2 cylinder based on the Kubota Z-400 block, was built from 1983 to 1988.

M-18, a 34.8 cu in, 14 hp @ 3,200 rpm, 2 cylinder, based on the Kubota Z-600 block, was built from 1983 to 1988.

Model M2-12, a 26 cu in, 11 hp, 2 cylinder, based on the Kubota Z-430 block, was built from 1987 to 1997.

M-35, a 75.5 cu in, 30 hp, 4 cylinder, based on the Kubota V-1200 block, was built from 1987 to 1997.

M-35A, a 4 cylinder engine producing 22.3 kW / 30 hp at 3,200 rpm - details unknown

M3-20, a 38.9 cu in, 18 hp, 3 cylinder, based on the Kubota D-640 block, was built from 1988 to 1997.

M3-20A, a 3 cylinder engine producing 13.4 kW / 18 hp at 3,600 rpm - details unknown

M4-30, also called the Atomic Four diesel, a 52 cu in, 25 hp, 4 cylinder, based on the Kubota Y-850 block, was built from 1988 to 1997. Offered as a diesel replacement for the original Atomic Four gasoline engine. It was similar to its namesake, since it was a 4 cylinder model weighing slightly less (122 kg / 270 lb as opposed to the original’s 150 kg / 330 lb with reduction drive - the M4-30 was only offered with a reduction drive) and generating slightly less power (18.6 kW / 25 hp at 3,600 rpm as opposed to the original’s 22 kW / 30 hp at 3,500 rpm) with a smaller displacement (850 cc / 52 cu in as opposed to the original’s 1,065 cc / 65 cu in).
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  #12  
Old 08-21-2013
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Re: Atomic Diesel 5432 Fresh Water Pump

westerml,
This is the info I used, supplied by another 'Sailnet' user. The local "Yacht" dealer wanted $450 for the fresh water pump. I got it on ebay for $72. Good luck. I hope this info answers your questions as it did mine.
So if you have a 5432 or M40 it is a V1501 Kubota engine. It was installed in Kubota L345 Tractors.

The Illustrated parts list for the L345 tractor is Kubota part number 97898-20530 for $30 (no procedures, just EVERY SINGLE PART NUMBER!)
The coolant pump for the V1501 is Kubota part number 15321-73032 for $121
Gasket for coolant pump is Kubota part number 15439-73430 for $2.20

Also, the Kubota shop manual the V1501, that contains EVERY procedure for rebuilding/servicing is Kubota part number 97897-00661

As a comparison, Torreson Marine gets $454 for the 5432/V1501 coolant pump, and $5 for the gasket. That is the EXACT same parts folks, just with the Westerbeke "marine" premium added on. Completely ridiculous and uncalled for, IMHO. Westerbeke doesn't make the part and likely doesn't even stock it. They slap their packaging on it with their part number and FOUR HUNDRED PERCENT MARKUP ON IT! Makes me sick, Westerbeke should be boycotted by boaters.
The Model 5432, a 91 cu in, 32 hp, 4 cylinder, based on the Kubota V-1501 block, was built from 1978 to 1982. It was also called the Atomic diesel. Approximately 650 were sold. It was replaced by the Model M40, which was produced from 1982 to 1998. The Model M-40 was also a 4 cylinder model, and the same size at 91 cu in and 32 hp but it was based on the Kubota V-1502 block. Approximately 360 were sold.
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Re: Atomic Diesel 5432 Fresh Water Pump

What can I say....you guys are awesome!...Thanks and look forward to giving back on this great forum.
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Re: Atomic Diesel 5432 Fresh Water Pump

So interestingly I just realized that we are not able to use the PM feature of the forum until at least 15 posts have occurred. Makes sense I guess to ensure system does not get bogged down with email traffic. Does anyone know if exchange of email address is permitted?
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Re: Atomic Diesel 5432 Fresh Water Pump

Another interesting snippet for you : the oil filter for my 5424 is identical to Bosch 72150, which is available at AutohausAZ right now for $3.81. I just bought 5 of them. I've been using them for several years now.
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Re: Atomic Diesel 5432 Fresh Water Pump

westerml,
First thing to do is to share what model Universal diesel you have.
There is a cross reference file "out there".
This one is partial: Kubota / Universal Injector parts Numbers & Engine Block Equivalents
You need to know the tractor model your engine block is used in, not just the engine block #.
Kubota dealers use the tractor model to locate parts.
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Re: Atomic Diesel 5432 Fresh Water Pump

Closing in on a water pump and have not decided yet whether to go OEM or not. The Kubota lasted 30 years and while I'm sure they "don't make em like they used to" it may be worth a few extra bucks. Also, it looks like any specs on the L345 tractor list the HP as 34HP not 32HP like the Universal 5432. Maybe the tractor application eeked a few more hp out of the motor. Would have thought it was a bench test and be the same.
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Old 08-22-2013
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Re: Atomic Diesel 5432 Fresh Water Pump

So the Bosch 72150 oil filter works very well as a replacement for Universal p/n 298852

I also found that the fuel filter on the engine, Universal p/n 298854, can be replaced by all these: Wix 33390, Fram P3726, Purolator PER 262F, NAPA 3390, Baldwin BF940

I have a Fram primary fuel filter that takes a Fram C1110PL cartridge, but they recently went from metal ends to cardboard, so I've switched to the identical Wix 33110 which still has metal ends.

I've been using the Wix for the last few years and they seem well made. Just bought several of each for $6 each at EverythingTrucking.com.

Finally, the drive belt, Universal p/n 204002 can be replaced by Gates 7410, Dayco 15410, and Goodyear 13411.
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Re: Atomic Diesel 5432 Fresh Water Pump

Does anyone happen to know the torque specs for the water pump mounting bolts for 5432 or now better know as the L345 Kubota? Thanks much.
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Old 09-03-2013
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Re: Atomic Diesel 5432 Fresh Water Pump

Anyone replace the thermostat on Universal 5432. 160F seems to be the correct stat. Is this also Kubota logic for replacement or was something different done by Universal for marine application. Thanks
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