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Topics - prh77

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Main Message Board / Thoughts on 12 volt icebox
« on: October 05, 2010, 05:02:32 PM »
I have been having problems with the original AB icebox system as of late. It would not always power up when the switch was turned on, and when it did, the fan would pulsate in a one minute on, 10 second off cycle at times. It crashed 2 weeks ago, so I started to put cash away for a replacement. Did some checking, and found low voltage at the panel switch when the system was activated..  2.5V. Found an unused switch and moved the power lead. I now have a new AB fridge. The contacts on the old switch must have been stressed by the 21+ years of 5-7 amp service.
It now works like a charm.

Main and 135 genny. Plenty of life left in them $450

Catalina 34s Parts & Pieces For Sale or Wanted / 25 XP air cleaner
« on: May 10, 2010, 07:49:37 PM »
Cannister with metal mesh inside in great condition. $45

Still has plenty of life. $225.

Main Message Board / A few thoughts on spare parts
« on: May 07, 2010, 04:33:31 PM »
Having been burned a few times after trying to install parts I kept for emergencies, I had a thought; when you get a spare, install it. This will accomplish a few things. First you will find out if it fits and functions. I remember one post here, a member was south of the border and his engine fresh water pump failed. Pulled out the spare to find one of the nipples for the hot water heater was not included. He ended doing a nipplectomy on the high seas with a pair of vice grips. Better to install the part at the dock and verify operation at your leisure. Another benefit is you will remove a part that you know is in working order. Granted it is used, but if you replace it before you have to, you have known good spare. One final benefit is the oh sh** factor. We have all snapped off hardware or had to fabricate tools for that bolt that makes you say what the hell were the designers thinking . Again at the comfort of your slip or mooring, you can apply PB Blaster and take your time. You can also procure new hardware that you buggered up. I am not saying we should replace everthing on the boat, but for some of the common spares, JUST REPLACE IT.

Main Message Board / Engine driven pump hose part number
« on: March 18, 2010, 11:00:17 AM »
The pump that is driven by the alternator belt [fresh water ] has a hose that goes from 1" to 7/8" and has a pre-formed 90 degree bend. I can see " Gates "on the hose but no P/N. Has anyone purchased one from NAPA or where ever,and do you recall the part number? Also, the 7/8" hose that goes from the thermostat housing to the coolant reservoir, will a regular hose make the bend with-out crimping, or do I have to go pre-formed. Thanks all.

Main Message Board / 25 XP Thermostat Temp
« on: March 12, 2010, 04:32:16 PM »
We all seem to have 160 degree thermostats in our engines, and I know if it aint broke don't fix it...but still....I wonder. The Universal manual says temp range is 160-190 F. It would seem to me, that if you have a clean 3" heat exchanger that has no problem holding your temp at 160 F, would a 180 degree thermostat make for a cleaner running engine [and more hot water to boot]. When I say cleaner running, it is my understanding that internal combustion engines run more efficiently as temp goes up [to a point]. Again, this is assuming that the heat exchanger is clean and can hold the temp to spec with no problems. I have heard there are problems with salt in cooling water, but I thought that was with raw water cooled engines.

Main Message Board / Cold Machine Operation
« on: March 12, 2010, 03:56:59 PM »
Original 1988 installation. While running, unit will lose rpms- judging by ear- about every 45 seconds. Does not stop...just slows down slightly and then picks right back up. Will do this slight cycling at 45 sec intervals like clockwork, so I do not think it is a fuse or wiring issue as it is too regular. Not sure if this is new, just began to notice it this week.  Any thoughts? Seems to cool fine, although it is still pretty cold up here.

Main Message Board / 25 XP fresh water pump wear
« on: February 14, 2010, 04:15:26 PM »
While going over the engine this fall, loosened alternator belt and found the pump pulley [ and shaft ] to have a small amount of play. I assume it is time to replace the unit. Does anyone have the latest and greatest Kubota P/N? Thanks.

Main Message Board / Engine oil.
« on: September 12, 2009, 06:46:54 AM »
   Here is a quick question for everyone; what type and viscosity oil do you use? My '88 Universal 25XP manual specifies straight 30, but I am wondering if the 15-40 Rottella might be the way to go.

Main Message Board / Mondo 50 amp alternator
« on: June 10, 2009, 04:20:52 PM »
Just installed this unit as Motorola was getting tired. It has a "sense" terminal that gives the internal regulator voltage input. This terminal has a jumper to the B+ terminal. If I were to wire the sense terminal directly to the house bank ( where the B+ terminal is wired ),the regulator would "see" actual voltage delivered to the house bank and adjust as required. I know in a perfect world, voltage at B+ and the pos term at house bank would be very close, but are there drawbacks to wiring as I describe? Only problem I see, is if the sense wire broke, alternator would run away. Any thoughts?

Main Message Board / Interior LED Upgrade
« on: June 07, 2009, 04:18:14 PM »
Stock 1988 interior lights, ie cabin fixtures that slide fore and aft for high and low, with bulbs that look like Buss fuses with pointed ends ( 10 watt ),and v berth / aft cabin reading lights that have what I think are #1410 bulbs. Are there LED bulbs that adapt to these fixtures, or do I need to go new?

Main Message Board / Boom outhaul replacement
« on: May 20, 2009, 11:53:16 AM »
 My out haul is jammed. I see in the manual there is a pulley inside the boom. I assume the end caps have to come off. I took the 4 screws off the aft cap and it won't move. Does the bolt in the middle of the cap have to come off also? Mine is so tight I thought I would shear it off.

Catalina 34 tall rig. Looking for a cruising sail in decent shape as mine is shot and cannot afford replacement.

Main Message Board / Hot water heater question
« on: April 16, 2009, 06:39:31 AM »
I have the standard Atwood heater, probably original. I changed the hoses last year, and now it seems to only get warm after extended engine runs. I then changed the thermostat and verified 160 degree operation. I have a valve in the heater feed line - from the freshwater pump fitting - and when I open it, both hose get nice and hot. Also, when I open this valve after the engine is warm, temp guage drops from 160 to 125, then recovers in a minute or so, indicating a transfer of heat. And yes, heater works great on shore power, almost too hot. I do not see how this could be the case, but would direction of coolant flow affect output, ie I reversed the lines?

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