Yanmar gm 10

[Niander]

Hi im wondering about the cooling impelor on this is the brass center sposed to be bonded to the rubber as mine isnt and so it looks to me like it would just slip round without turning?

 

[KenMcCulloch]

Yes the brass bit is meant to be bonded to the rubber. I believe that the fault you describe is quite common.

 

[earlybird]

It was certainly a fairly frequent fault a few years ago. IIRC, Yanmar claimed that a "bad batch" had been manufactured but that they had sorted this out.

 

[Pye_End]

Indeed - but well past the 'bad batch' and they still came apart. At one time you could get a refund for them, but probably not now.

 

[Niander]

Ah ok another thing to get then....wheres a reasonably priced site and same for oil filters.....?

 

[Tranona]

There are alternatives, Johnson and Globe are two brand names, but I have had no problem with recent Yanmar parts. I think part of the problem is that the by pass hose bungs up so the pump has difficulty pumping water when the engine is cold before the thermostat opens. For many auxiliaries that are just used at the start and end of the day, the proportion of cold running is high. Only a theory, but worth checking your hose - it is the short vertical one leading into the thermostat housing. And of course inspecting the impellor regulalry - easier if you have a Speedseal rather than struggling with those little inaccessible screws which have a fatal attraction for the bilges!

 

[srp]

Check this thread:
http://www.ybw.com/forums/showflat.php?Number=1671582
Also ASAP do a Jabsco replacement, cat no Jabsco
1414-0001
www.asap-supplies.com/

 

[Spuddy]

Re:1GM10 impellers etc

asap stock impellers that can cope with a period of dry running. Got a note at home of Crosland ref for oil filter but.....I'm not at home. If nobody comes up with it I'll dig it out next week.

 

[ga1135]

I did encounter similar situation that the rubber parts just slip & no water flow. Since both the rubber & copper parts are still in good order, I drilled a small hole on each side of the parts and join them up by small s/s screws, the modified unit has been running for 5 years and still in good shape.

For your info. /forums/images/graemlins/smirk.gif

 

[Burnham_Bob]

must admit i've never had an impellor problem in seven years, and went from annual changes to every two years. as for non-yanmar parts, oil filters etc are standard on some japanese cars but for a pound or so i've always found the help i get from my yanmar dealer, French Marine, worth the extra. as to impellors, i'd definitely stick to the yanmar spare.

 

[Niander]

I drilled a small hole on each side of the parts and join them up by small s/s screws, the modified unit has been running for 5 years and still in good shape.

Ill do the same!......cheers

Is the thermostat reliable?

or do i need to test it somehow?

 

[tobble]

Someone will probably corret me, but the 1GM10 filter is identical to something like a Toyota 353 and various other vehicles. Anyway, it's a common type, best bet would be to take the old one along to a motor factor's and they'll check the manufacturer codes etc... Think the oneI gotlast year wasabout £2.50, compared to the thick end of £8 for the one with yanmar written on it... no contest even to those of us south of 'adrians wall!

 

[SONNY494]

Here is an email forum I found to be helpful regarding Yanmar engines. http://groups.yahoo.com/group/Yanmardiesel/

Sonny

 

[smth448]

This is spooky. Only yesterday I dismantled the thermostat housing on my 1GM10 to try to find out why it was not pumping water. The thermostat was closed but opened when droppe din a mug of hot water. The workshop manual will tell you what temp it should open at but I went for the British Standard ouch! test. As per an earlier reply I think my problem was the bypass pipe just before the thermostat housing was completely blocked with fur.
One brilliant design feature was that I had to remove the diesel injector pipe before I could remove the thermostat. Another bleeding job!

 

[srp]

The Crosland oil filter number for a 1gm10 is 672.
There are other cross references of course, depending on which make of filter is obtainable near you. For Cummins stockists, the number equivalents are:
LF3462 Lube (oem Yanmar 12445035100) -Oil filter
FF5260 Fuel (oem Yanmar 10450055710) -Fuel filter

The impeller that Spuddy refers to that can withstand a bit of dry running is the Globe. Unfortunately ASAP don't stock it any more. The UK importers for Globe are http://www.bainbridgemarine.co.uk/