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Old 17-11-2007, 14:10   #1
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Perkins 4108 seawater pump failed in St. Thomas...help

We are in St. Thomas and our salwater pump on the Perkins 4108 is leaking, needs new seals. When we removed it we found that it had the axle key broken, I guess it was not properly aligned when installed.

Basicly I need help finding the following:

1. Where can I find a new pump here in St. Thomas.

2. How to properly align the pump without the special tool.

3. Any good mechanics here in the island?

Any help appreciated........
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Old 17-11-2007, 15:30   #2
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Dave's Diesel Service, Inc.
6300 Estate Frydenhoj #22, St. Thomas
Tel340) 775-9912, Fax340) 779-1547
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Sales reps for Perkins, Caterpillar, Hurth, ZF Marine, Lugger; full diesel service.
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Ruan's Marine Service
6747 State Nadir No.27, St. Thomas, USVI
Tel:340-775-6346
Wesk Marine
Altona, St. Thomas, USVI
Tel:340-776-8077
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Old 17-11-2007, 18:27   #3
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Quote:
We are in St. Thomas and our salwater pump on the Perkins 4108 is leaking, needs new seals. When we removed it we found that it had the axle key broken, I guess it was not properly aligned when installed.
The impeller....?

If the only problem is a broken key, ya can make one yerself with a piece of hardened steel and a hand-file.
(It may take a few hours...)

The seal, or flimsy gasket is really a piece of paper.
Cut one to fit and smear some gasket-cement on each side.
It should last ya a while and if it starts leaking before ya find a "factory gasket", just cut another one and keep on trucking.

Been there, done that.
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Old 18-11-2007, 04:37   #4
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Well yes the key is broken but we believe that the pump was not properly aligned. We need to get the key that belongs in the pump and also to align the pump without the special tool. Today is sunday and we are kind of stuck here.

Also we don't know where the broken part of the key went. Probably inside the front engine cover. I dont have a tool big enough to remove the pulley. I guess I can try with a magnet and slide the piece up to the pump area and pull it with a shop vac.

Any suggestions are well taken.......

Thanks a lot.
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Old 20-11-2007, 05:18   #5
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Problem solved....

Techno Diesel in St. Thomas works on the Prkins engines and have new parts and repairs almost anything related.
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Old 20-11-2007, 09:20   #6
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The pump itself is attached with 4 bolt to the engine block. It has a mechanical pick up to turn the axel inside the pump and drive the impeller. The mechanical pick up is keyed to the axel. I don't belive the key is removable and is a permanent part of the axel. Is this the part that is broken?

If it is the key that drives the impeller inside the pump, do what CSY Man says and you are out of there.
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Old 24-11-2007, 15:29   #7
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All Points Marine at Compass Point Marina works on and has parts for all the major marine engines and they know where old engines for parts are all over the island.
Call them at
340-775-9912

Where are you on STT? I'm in Honey Moon harbour..
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Old 25-11-2007, 17:07   #8
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Originally Posted by robbie_d View Post
All Points Marine at Compass Point Marina works on and has parts for all the major marine engines and they know where old engines for parts are all over the island.
Call them at
340-775-9912

Where are you on STT? I'm in Honey Moon harbour..


Yes we were in St. Thomas. Some friends brought us a brand new pump from San Juan P.R.. But at the same time we had the old one rebuilt in Technodiesel in St. thomas. Just ask for Hector the owner, excellent service. We are back in our home in Humacao PR but we left the boat in Village Cay marina in Tortola. We are planning to sail it to Culebra next weekend.
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