So my Yanmar 3YM20 engine is pretty new ~600 hrs – which for a diesel is barely just getting out of bed in the morning. A couple of weeks ago I noticed some water in the bilge and back traced it to the seawater pump on the engine. The hoses were my first suspects but they turned out to be fine.
I pulled the pump and found it was leaking from one of the seals around the bearing on the shaft. After doing some research I had three options:
Rebuild the pump myself
Buy a new pump
Have somebody else rebuild it
I could have rebuilt it myself but I don’t have a bearing press. Yes…I know I could constructed a homemade press using a rudimentary lathe but the it seemed like a hassle and something with lots of fiddly bits and parts in freezers that I’m prone to screw up.
I called the local Yanmar dealer and gave them the part number.
“We don’t have that and we don’t know what it is… can you send us pictures?”
Are you serious? I sent them pictures.
“Hmm…never seen one like that before…not in our books…don’t know…we have something similar for $350”
Yanmar dealers out of your area won’t even talk to you. $350? Are you kidding me?
For a $130 he cleaned it, rebuilt the pump, including machining the shaft and surfacing the face plate, installed new stainless steel springs and explained to me what was wrong and why these crappy pumps routinely fail and that I should use Super Lube grease when I change my impeller. Oh, and that includes shipping back to me.
My windows were looking pretty foggy so I did some online research and found some good recommendations for the 3M Headlight Restoration kit. This took one kit and about an hour for each side, so two kits total. I applied a layer of paste wax over top. ~$50 total.
More from Tom B., the owner of Whisper out of Monroe Harbor, Chicago IL
“I own hull number 24, Whisper. She races out of Columbia YC located in Monroe Harbor, Chicago IL. PHRF handicap is now 96. The only changes to the boat are moving the secondary winches to the cabin top, removing two of the halyard winches and replacing the other two with Harken 40 ST winches. The check stays now lead directly (no purchase) to the cabin top winches. We also switched to a MaxProp classic two blade propeller. The only structural repairs we have made are cutting out the bottom 8 inches of the main bulkhead and scarfing in a G10 panel. This seems to be a common repair to both the 34 and 37. Whisper has done very well racing. We have won our class once in the Chicago to Mackinac race, we dominate our class in the light air Wednesday evening series, and we do very well on the weekend races as well. We were the Chicago Yachting Association Boat of the Year last year. Our sail inventory is all North.: Nordic Radian mainsail, 0.6 oz Norlon deep running spinnaker (shape between code 1.5 and 4?) and carbon 3DL genoa. Sail Number is US42934. The most annoying thing about the boat is the location of the traveller. I have seen two Express 37s with racing cockpits (one originally built that way and one modified) which look great. But I do not have the money to do that with my boat. The original name of the boat was Taxi Dance. Ownership history is somewhat murky but I believe we are the third owner. There was another Express 34 in the Chicago area in the early 90s, Second Helping USA41362, but I do not know were she is now.”
Tom B. the owner of Whisper out of Chicago sent us his ORR certificate! I’m not sure exactly what all this stuff means but I’m pretty sure it’s a license to kick ass on the race course. Click on the graphic or link below.
Tom B. the owner of Whisper out of Monroe Harbor, Chicago IL sent me some amazing material! Stellar photos, major bulkhead rebuild and his ORR certificate! I’m already planning on doing a Vulcan mind-meld to extract all his racing knowledge! Stay tuned!