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CAT D3400 in marine propulsion service

CAT D3400 in marine propulsion service

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377
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Some of you might enjoy reading about my childhood experience with a CAT D3400 on my Dad's Monterey Clipper commercial fishing boat, the Josie M.

https://sites.google.com/site/boeing377/fishingamontereyclipperoutofsfsfisherman

Our CAT did not have a pony engine starter, just a 12 volt electric one. I saw only one other D3400 in the fishing fleet aboard the Poco Loco run by a fisherman we all called Sarge. Sarge's D 3400 did have a gasoline pony engine starter and I remember the racket it used to make starting up. Sarge was a retired USAF Sgt.

Sarge's D3400 looked immaculate. Clean, yellow and very few visible leaks. Ours sure didn't look pretty. It was rusty, greasy and had many minor oil leaks, but man was it reliable. It never once failed or faltered when we were at sea. We gave it clean fuel (it had an awesome 4 element CAT filter pack on it and we pre-filtered before that). We also changed the oil often. It was an very old engine with a lot of blow-by and the oil got black quickly. You could not start it cold without using ether. We treated it well and it rewarded us with many thousands of hours of faithful service.

My Dad sold the Josie M and bought a larger boat with a Jimmy 6-71 engine. The Josie M sunk later during a winter storm while moored at Bodega Bay CA. I'll bet that CAT D3400 went to its grave with at least 25000 hours on it without once being overhauled.

Rest in peace old CAT, you just sipped fuel and always brought us home safely.

Mark
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Sat, Feb 27, 2016 4:38 AM
Old Magnet
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I thoroughly enjoyed your linked story. Having lived in Marin County and spending many days at locations you mentioned. Aquatic Park had a Sea Scout base in those days (near the old Alcatraz ferry) where I was a member and Fisherman's Warf was a common hang out. I was looking for the term "potato patch" for that area of choppy water just outside the "Gate".
Anyway you'll find frequent discussion on D3400's here and the infamous
pony motors.
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Sat, Feb 27, 2016 6:09 AM
edb
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Hi Mark,
welcome to the BB.
Wow, what an interesting history you have put down there to honour your Father and his vessels.
I have yet to finish reading your most interesting story, from what I have read so far you have my interest. I will be back when time permits--some of those Marine businesses sound like some I have visited way back when--staffed with some very knowledgeable people--a lot I would think were ex Armed Forces Service personnel who learned or honed their skills in adverse conditions.

As a Cat Dealer trained mechanic I have worked on Marine engines too and can say that in my experience Cat engines are up there for reliability and endurance if serviced as you and your Dad appeared to have done. They do well with economy too.

Alas, I do not have spec sheets for the D3400 engine--only go down to D4400. I am sure some one will be along in due course and help you out so you can finish your History.
My Rack Setting Chart agrees with your 26HP Rating at 1500rpm Full Load speed and 1590rpm High Idle speed for a D3400 Marine Engine. If your prop was correctly sized you should have been just above the 1500rpm figure at full speed.

Thank You for coming along and telling us your historic tale, I for one do appreciate your effort.
Cheers,
Eddie B.
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Sat, Feb 27, 2016 6:32 AM
old-iron-habit
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Reply to Old Magnet:
I thoroughly enjoyed your linked story. Having lived in Marin County and spending many days at locations you mentioned. Aquatic Park had a Sea Scout base in those days (near the old Alcatraz ferry) where I was a member and Fisherman's Warf was a common hang out. I was looking for the term "potato patch" for that area of choppy water just outside the "Gate".
Anyway you'll find frequent discussion on D3400's here and the infamous
pony motors.
Wow. Great read. I made many trips out to the Farallons in my 22 ft wash deck center consele in the 80s. It is a beautiful place like you describe. I can't remember the name but there was a huge underwater rock that came up to about 20 ft below the surface. When we could find it on our then state of the art Loran systems we would drift over it for fantistic fishing. I simply cannot fathom your father fishing without anything but dead reckoning. Once we got fogged in at the Farallons and according to my compass reading I held to stay on Loran course I thought I would land at Bodega Bay. The side current was that strong. We payed attention to the Loran and hit the Golden Gate dead on. My dead reckoning if I had followed it would have probably put us in at Monterrey. We also fished the Cordell banks for rock fish. Wonderful times and great memories. Thank you for sharing.
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Sat, Feb 27, 2016 7:11 AM
drujinin
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Reply to old-iron-habit:
Wow. Great read. I made many trips out to the Farallons in my 22 ft wash deck center consele in the 80s. It is a beautiful place like you describe. I can't remember the name but there was a huge underwater rock that came up to about 20 ft below the surface. When we could find it on our then state of the art Loran systems we would drift over it for fantistic fishing. I simply cannot fathom your father fishing without anything but dead reckoning. Once we got fogged in at the Farallons and according to my compass reading I held to stay on Loran course I thought I would land at Bodega Bay. The side current was that strong. We payed attention to the Loran and hit the Golden Gate dead on. My dead reckoning if I had followed it would have probably put us in at Monterrey. We also fished the Cordell banks for rock fish. Wonderful times and great memories. Thank you for sharing.
Great piece of History that you penned!
Growing up working on a small Farm with Horses parallels the old way that your Father worked with his "simple" Boat and Fishing methods.
To take the time to put history down on paper/world wide web is the best way to share lives of our fore fathers!
What you have done is immortalized a piece of History allowing those that come after us to see the Pride of our People and Country!
Thank You for taking the time to share this with Us!
Jeff
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Sat, Feb 27, 2016 7:22 PM
Steve A
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Reply to drujinin:
Great piece of History that you penned!
Growing up working on a small Farm with Horses parallels the old way that your Father worked with his "simple" Boat and Fishing methods.
To take the time to put history down on paper/world wide web is the best way to share lives of our fore fathers!
What you have done is immortalized a piece of History allowing those that come after us to see the Pride of our People and Country!
Thank You for taking the time to share this with Us!
Jeff
Thanks for posting, I have always liked boats and fishing on the Great Lakes, most of my experience is as a customer on a Charter boat but still a lot of fun, if I find my self by the water with time to spare its likely you will find me walking around at the Marina.
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Sat, Feb 27, 2016 8:37 PM
ronm
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Reply to Steve A:
Thanks for posting, I have always liked boats and fishing on the Great Lakes, most of my experience is as a customer on a Charter boat but still a lot of fun, if I find my self by the water with time to spare its likely you will find me walking around at the Marina.
Very interesting & well written story.
Having grown up on a big semi-arid mountain about as far from an ocean as you can get, I was always intrigued by boats from a distance, especially Diesel-powered ones...closest I ever came was playing with toy boats on beaver dams...
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Sat, Feb 27, 2016 11:27 PM
cojhl2
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Reply to Steve A:
Thanks for posting, I have always liked boats and fishing on the Great Lakes, most of my experience is as a customer on a Charter boat but still a lot of fun, if I find my self by the water with time to spare its likely you will find me walking around at the Marina.
Wow Mark, what a beautiful read.

It's especially interesting to me as I grew up in the dust of E Washington and have very little idea of life around the sea.

Thank you for posting.
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Sat, Feb 27, 2016 11:56 PM
gauntjoh
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Hi Mark,

Great story, very interesting. I did spot one typo (I think.....)
"Jay taught me all about high voltage DC power supplies and how to diagnose and fix problems with getting electrocuted."

I assume you meant "without getting electrocuted" !
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Mon, Feb 29, 2016 3:28 AM
377
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Reply to gauntjoh:
Hi Mark,

Great story, very interesting. I did spot one typo (I think.....)
"Jay taught me all about high voltage DC power supplies and how to diagnose and fix problems with getting electrocuted."

I assume you meant "without getting electrocuted" !
[quote="gauntjoh"]Hi Mark,

Great story, very interesting. I did spot one typo (I think.....)
"Jay taught me all about high voltage DC power supplies and how to diagnose and fix problems with getting electrocuted."

I assume you meant "without getting electrocuted" ![/quote]

Oops. Thanks for the edit, now corrected. Thankfully I did survive my informal electronics training.
Many of the older radios used war surplus dynamotors which comprised a 12 or 24 volt DC motor diving a 250-650 VDC DC generator (voltage specs depended on the radio's tube plate voltage needs). The motor and gen were on a common shaft and enclosed in a cylindrical case with enclosed fans on shaft ends for cooling. Those high voltages were quite dangrous. 650 VDC at 450 mA can really do some damage.

Jay taught me to always keep one hand in my pocket when probing live HVDC circuits. Good advice. Helped prevent a direct discharge path through the heart.

Mark
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Tue, Mar 1, 2016 7:57 AM
377
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Reply to edb:
Hi Mark,
welcome to the BB.
Wow, what an interesting history you have put down there to honour your Father and his vessels.
I have yet to finish reading your most interesting story, from what I have read so far you have my interest. I will be back when time permits--some of those Marine businesses sound like some I have visited way back when--staffed with some very knowledgeable people--a lot I would think were ex Armed Forces Service personnel who learned or honed their skills in adverse conditions.

As a Cat Dealer trained mechanic I have worked on Marine engines too and can say that in my experience Cat engines are up there for reliability and endurance if serviced as you and your Dad appeared to have done. They do well with economy too.

Alas, I do not have spec sheets for the D3400 engine--only go down to D4400. I am sure some one will be along in due course and help you out so you can finish your History.
My Rack Setting Chart agrees with your 26HP Rating at 1500rpm Full Load speed and 1590rpm High Idle speed for a D3400 Marine Engine. If your prop was correctly sized you should have been just above the 1500rpm figure at full speed.

Thank You for coming along and telling us your historic tale, I for one do appreciate your effort.
Cheers,
Eddie B.
[quote="edb"]Hi Mark,
welcome to the BB.
Wow, what an interesting history you have put down there to honour your Father and his vessels.
I have yet to finish reading your most interesting story, from what I have read so far you have my interest. I will be back when time permits--some of those Marine businesses sound like some I have visited way back when--staffed with some very knowledgeable people--a lot I would think were ex Armed Forces Service personnel who learned or honed their skills in adverse conditions.

As a Cat Dealer trained mechanic I have worked on Marine engines too and can say that in my experience Cat engines are up there for reliability and endurance if serviced as you and your Dad appeared to have done. They do well with economy too.

Alas, I do not have spec sheets for the D3400 engine--only go down to D4400. I am sure some one will be along in due course and help you out so you can finish your History.
My Rack Setting Chart agrees with your 26HP Rating at 1500rpm Full Load speed and 1590rpm High Idle speed for a D3400 Marine Engine. If your prop was correctly sized you should have been just above the 1500rpm figure at full speed.

Thank You for coming along and telling us your historic tale, I for one do appreciate your effort.
Cheers,
Eddie B.[/quote]

My Dad rarely ran our D 3400 above 1400 RPM thinking that slower would make it last longer. Later another mechanic told him he should run it at 1550 without fear and that if he never ran it hard it could build up carbon deposits etc. As old and worn as it was it didn't smoke much.

It clattered like crazy on a cold start but settled down to smooth idle when it warmed up. It was just so reliable. Never once let us down.

Back then you could buy two grades of diesel fuel, dark or light. Can't recall what my Dad chose, probably whatever was cheapest. I recall paying 14 cents a gallon. He really complained when it went up to 19 cents. We didn't have to pay a road tax on marine diesel.

Some thrifty fishermen would pour their used crankcase oil back into the diesel fuel tanks after an oil change. They claimed the fuel filters would take care of any impurities and why not get some miles out of the oil. My dad never did that. He treated our engine like a family member. "You don't feed garbage to a friend" he once told me remarking about the "on board oil recycling" practice.

Back in the early 60s there was an oil "re-refinery" located in San Carlos CA that collected waste lube oil and reprocessed it for vehicle use. My 6th grade class visited the plant and watched black gunky waste oil emerge as clear golden "re-refined" oil with a new additive package added. We each got a 1 qt metal can of re-refined oil to take home. I asked my Dad if he was going to put it in our car and he said no, but he would use it for household lube needs.

My brother is still a CAT man. You cant convince him that there is a better engine made. I own a dirty workboat with a Jimmy 671 diesel that I plan to commercial fish when I retire. He has an immaculate Buddy Davis designed 68 ft sport fisher with two V -12 CATS in it. I think his fuel burn at 32 knots is about 160 GPH. I burn about 3.1 GPH at my top speed of 7 knots. Much less when I troll.

Mark
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Tue, Mar 1, 2016 8:08 AM
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