Well ..... while I can concur with that schedule... I've found that pulling
the impeller when on seasonal dry dock...... I've tripled the useable life
span of the impeller.

I also remove the alternator and belts.Stored warm and dry for the winter.

Do you wrap the engine with a cover while on the hard for storage? I was
told to try it but my first concern would be condensation from the cover.
What do you think?

CM



"Marc" wrote in message
...
| Bottom line: If you replace the impeller every season, you get
| proficient in doing it, the bolts don't get a chance to rust in, and
| the chances of an impeller failure diminish greatly.
|
| On Sun, 25 Jul 2004 09:23:23 -0300, "Capt. Mooron"
| wrote:
|
| All good Marc... but the face plate faces the engine I believe.
|
| CM
|
| "Marc" wrote in message
| .. .
| | 2 things. first , get a speed seal pump cover. 4 knurled thumb screws
| | and the cover comes off, no tools.
| |
| | second, drill out the threaded holes in the pump and weld nuts to the
| | forward side of the pump bracket. Insert the bolts through the pump
| | from the rear , Pump is then removeable without removing the bracket.
| |
| | On Sat, 24 Jul 2004 23:26:28 -0300, "Capt. Mooron"
| | wrote:
| |
| | I'm overjoyed I coaxed you into a proper reply to Bart's Question
Jeff!
| ;-P
| |
| | Seriously... each step you illustrated was correct... and I don't have
a
| | gauge so I have to assume a warning buzzer. I've had a few clogged
| intakes
| | in time and a couple of bad impellers.... I concur with your
assessment
| of
| | Yanmar Pumps!
| |
| | CM
| |
| |
| | "Jeff Morris" wrote in message
| | ...
| | | The coolant flow can be checked by inspection almost immediately,
| though a
| | | partial clog can look OK and still send it into Overheat. Certainly
| I'd
| | look
| | | there first if there was any significant change.
| | |
| | | However, if the gauge is moving quickly, like up and down in a
matter
| of
| | | seconds, it can't be a real temperature issue, because the coolant
| can't
| | change
| | | temperature that quickly. I've never had a temp sensor do that, but
| I've
| | seen
| | | it from a faulty oil pressure sensor, and I've seen it from a
dangling
| | wire.
| | |
| | | When my heat exchanger was partially clogged the engine was more
| sensitive
| | the
| | | overheating problems. I could tell within a few seconds if my wife
| turned
| | on
| | | the microwave because the temp would start to creep up. Now the
temp
| is
| | a bit
| | | more stable, but I can't run the engine up to 3000 rpm if the
| alternator
| | is
| | | fully loaded.
| | |
| | | BTW, last week I did have an overheat situation: within a minute
after
| | dropping
| | | the mooring at Kittery, I noticed the starboard engine temp going
up.
| It
| | put it
| | | into neutral and asked my wife to check the water flow - there was
| none.
| | We
| | | killed the engine and went back to the mooring (its sometimes nice
to
| have
| | two
| | | engines!). First I pulled the intake of the pump - full flow
meaning
| no
| | intake
| | | clog. Then I pulled the output hose off and asked my wife to
"start"
| with
| | the
| | | kill switch pulled - no flow. At that point I just pulled off the
| water
| | pump,
| | | removed the cover (damn Yanmar mounted the pump on the GM's so that
the
| | cover
| | | can't be reached without pulling the pump!). The impellor looked
OK,
| but
| | my
| | | wife asked how it worked so I spun the pulley to show her but the
| impeller
| | | didn't spin! I seems the impellor was spinning free on its hub. A
| spare
| | was
| | | put in and we were underway again with a total delay of about 45
| minutes.
| | |
| | |
| | |
| | |
| | | "Capt. Mooron" wrote in message
| | | ...
| | | Good Grief Jeff...... if you have a coolant problem you'd check
the
| | belts???
| | | Wouldn't you tend to believe the sensor and simply verify the
coolant
| | flow
| | | prior to questioning your instruments?
| | |
| | | CM
| | |
| | | "Jeff Morris" wrote in message
| | | ...
| | | | Oh! The ENGINE temperature!
| | | |
| | | | Even if there is a cooling problem, the engine provides a
| significant
| | | buffer, so
| | | | if the fluctuation is fast, as in you actually see the needle
move,
| | its
| | | probably
| | | | a loose connection on the sensor, or some other such fault.
| | | |
| | | | If its a small engine with a large alternator it could be a
| slipping
| | belt.
| | | I've
| | | | never seen a case where the coolant flow went up and down
| repeatedly
| | but I
| | | | suppose it could happen. Can a thermostat fail in this mode?
| | |
| | |
| | |
| | |
| |
| |
|
|