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Technical Help Forum
Started by ryron01 at 01-13-2009 2:50 PM. Topic has 18 replies.
  
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 01-13-2009, 2:50 PM
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ryron01
Joined on 01-14-2009
Posts 2
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How do I get the frickin' coolant reservoir off
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How do I remove the coolant reservoir from the 1979 CX500 – mine rotted
through and now I need to replace it (I have no ride!). Searched forever last
night and today but cannot figure out what needs to come off in order to get
that sucker in and out. I used a broomstick, hammer, and needle-nose pliers in my attempts. Whats next acetylene torch?
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01-13-2009, 3:06 PM
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WisconsinCX
 
Joined on 07-07-2008
Germantown, WI
Posts 772
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Re: How do I get the frickin' coolant reservoir off
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Pulling the engine makes getting to it easy!
83 CB1100F Super Sport
No Twins at this time. :( Went through about 12 of them tho!
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01-13-2009, 4:26 PM
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ryron01
Joined on 01-14-2009
Posts 2
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![Hmm [^o)]](http://choppercharles.com/cs/emoticons/emotion-40.gif)
Re: How do I get the frickin' coolant reservoir off
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I'd thought of that, but is it really necessary to just replace the tank?
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01-13-2009, 4:35 PM
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RustyTec
Joined on 08-26-2007
Dallas Tx.
Posts 606
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Re: How do I get the frickin' coolant reservoir off
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01-13-2009, 4:49 PM
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Blindstitch2002
Joined on 05-16-2007
Greenfield Wisconsin
Posts 5,000
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Re: How do I get the frickin' coolant reservoir off
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Your looking at some fun with the coolant reservoir. Do you happen to need a new mechanical seal. That would be a good thing to get done at the same time.
1978 Honda Cx500 Maggot
1979 Honda Cx500 Custom
1980 Cx500 Deluxe
Buy HTTA Items
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01-13-2009, 6:12 PM
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RustyTec
Joined on 08-26-2007
Dallas Tx.
Posts 606
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Re: How do I get the frickin' coolant reservoir off
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01-13-2009, 6:35 PM
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Blindstitch2002
Joined on 05-16-2007
Greenfield Wisconsin
Posts 5,000
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Re: How do I get the frickin' coolant reservoir off
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I always wonder why people worry so much about these reservoirs. I know there isn't much to them and the radiator dosen't hold much fluid but I hardly ever have to add fluid to my radiator and when I do it's usually because it's time for basic maintenance. How hard is it to check the coolant once a month?
I guess my theory strings from the old Ford I had where it didn't have a reservoir. It just dumped the hot coolant on the ground. Never had any problems with that truck besides needing to put a new floor in it.
1978 Honda Cx500 Maggot
1979 Honda Cx500 Custom
1980 Cx500 Deluxe
Buy HTTA Items
Quick Reference Info
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01-13-2009, 6:47 PM
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CXSarnia
Joined on 01-11-2008
Sarnia, Ontario, Canada
Posts 2,623
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Re: How do I get the frickin' coolant reservoir off
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 RustyTec wrote: |
I agree with WisconsinCX.
Here is proof that it can be done.
However, It would be easier to move the engine, at least some.
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Now, that thar is some good ol' Motorcikle fixin tools. That's how they do it eh!
2009 DN-01 Spakin' New!
1982 CX500 Turbo & Parts bike
1981 SL185 Yamaha Exciter
198? V45 Magna
1979 CX500 Deluxe
1982 CB750K Daily rider September 1999
1982 CX500 Custom - project Originally bought April 1982 safetied and on the road 09/2008
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01-13-2009, 8:19 PM
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DavidfromWisconsin
Joined on 03-19-2008
Appleton, WI
Posts 2,458
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Re: How do I get the frickin' coolant reservoir off
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You can always hammer out what is left of the one you have left and putting a thick plastic bottle in it's place with plastic tie straps until you do pull the engine sometime in the future.
David From Wisconsin ... R80Dave
'82 GL500I alias Candy
'82 GL500I alias Candy II
'00 BMW K1200LT & trailer
'81 KZ440 (Wife's learning bike)
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01-13-2009, 9:23 PM
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RustyTec
Joined on 08-26-2007
Dallas Tx.
Posts 606
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Re: How do I get the frickin' coolant reservoir off
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Here is another 'get-er-done' kind of Rusty
 640)this.width=640;if(this.height>480)this.height=480;" border="0">
I wouldn't recommend a beer can if your State has a open container law.
Photo is from his post:
http://choppercharles.com/cs/forums/54683/ShowPost.aspx
BS - You may get away with a non-vented cap but a boil over, at speed, could get you to leap off you bike. lol
Ripped from some auto fourm:
blazee 02-02-2006, 06:47 AM
I found this online, it explains the difference between vented and non
vented better than I can, because I've never noticed the difference:
Most caps these days are "vented" to a recirculating tank. This means
that they have a one-way valve on the bottom of the plunger that closes
when there is pressure in the radiator and opens when there is a vacuum
in there. In the case of a 16# cap, when the pressure in the rad goes
over 16#, it pushes the plunger up and releases the pressure into the
little tube sticking out the side of the cap holder. Any steam/water
under pressure blows out this little tube. If you have a hose between
the little tube and the recirculating tank the steam and water go into
the tank (it usually enters from the bottom and is vented at the top).
When everything cools down, the radiator now has a vacuum in there and
the little one-way valve on a "vented" cap opens and permits the liquid
held in the recirculating tank to return into the radiator, because the
vacuum from the cooled-down rad now sucks the water from the bottom of
the recirculating tank back into the radiator. Old sytle rad caps don't
have that little one-way valve in there.
Older cars
used to run much cooler and normally didn't require a recovery tank,
because they seldom "boiled over", unless there was some kind of
problem - therefore a non-vented rad cap was the norm, with a vent hose
exiting to the street, just in case. Modern day engines are designed to
run at higher temps and in many instances dump water into a recovery
tank from the expansion of the extra heat, to be "recovered" later,
when the engine cools down.
herkyhawki 02-02-2006, 08:59 AM
Older cars used to run much cooler and normally didn't require a
recovery tank, because they seldom "boiled over", unless there was some
kind of problem -
Older cars that didn't have a recovery tank typically had oversized
radiators, and you would only fill the radiator to about 2" below the
cap. They ran just as hot, and the coolant expanded into the air space
in the top of the radiator.
blazee 02-02-2006, 11:09 AM
Older cars that didn't have a recovery tank typically had oversized
radiators, and you would only fill the radiator to about 2" below the
cap. They ran just as hot, and the coolant expanded into the air space
in the top of the radiator.
It's true that they were filled below the neck, and the coolant
expanded into the air space, but they did in fact run cooler. Cars
today are designed to run hotter to reduce pollution.
RustyTec ’81 GL500. Dallas Texas.
RustyVape Electronic Cigarettes Local NE Dallas, Texas
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01-14-2009, 6:53 AM
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Abes_CW
Joined on 04-17-2007
saskatoon
Posts 3,036
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Re: How do I get the frickin' coolant reservoir off
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Stitch, I think the recovery bottle is an environmental thing.
1983 GL650i
Had 4 CX/GL's at one point this year, down to one, next spring is another adventure!
age 38 (29 plus tax)
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01-14-2009, 9:33 AM
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RichNCT
Joined on 03-02-2006
Connecticut, USA
Posts 3,463
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Re: How do I get the frickin' coolant reservoir off
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Expelling coolant to a tank, and recovering it to the radiator are normal, routine functions. Look at your overflow tank when engine is cold vs hot (meaning "operating temperature") There is a higher level at running temps. If you did not have a tank, you would soon be low on coolant. If you restricted the outflow, you would end up with excessive radiator pressure. It's just the way vehicle engines are designed these days.
Refueling on The James Bay Road, 2009
Born to be relatively wild (for a grampa x 3)
GL650I, CX650E, CX650T
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01-19-2009, 9:59 AM
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Shep
Joined on 01-30-2007
UK.2x1980CX500A
Posts 7,647
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Re: How do I get the frickin' coolant reservoir off
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On one of my CX the coolant overflow bottle has not been used by the engine in over two years.I know this as the coolant in the engine is standard blue and the coolant in the over-flow bottle is advanced,"Orange",The two have never mixed.There are no blockages in my system.I think in good condition the cooling system on the CX/GLs is so good it rarely if ever requires the use of the overflow system.
My 10 penn'th.
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Id quot circumiret, circumveniat
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01-19-2009, 10:22 AM
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CXSarnia
Joined on 01-11-2008
Sarnia, Ontario, Canada
Posts 2,623
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Re: How do I get the frickin' coolant reservoir off
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Hey Shep,
When I started my GL500 the first time, I didn't get any 'flow' in the cooling system. I popped off the rad cap, and topped it off at the radiator. After that, once the engine was warm, there was an exchange of the fluids in the reservoir. I'm sure it did 'exchange' as the fluid in the reservoir began to warm up as well.
2009 DN-01 Spakin' New!
1982 CX500 Turbo & Parts bike
1981 SL185 Yamaha Exciter
198? V45 Magna
1979 CX500 Deluxe
1982 CB750K Daily rider September 1999
1982 CX500 Custom - project Originally bought April 1982 safetied and on the road 09/2008
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01-20-2009, 1:45 PM
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phaserburn
Joined on 11-12-2008
Frisco, TX
Posts 33
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Re: How do I get the frickin' coolant reservoir off
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I wish i would have read this on friday!
I spent 2 hours Saturday struggling with it. I took it out becuase I needed to clean out the pulsar and replace the gasket. If you take the pulsar cover and carbs off, the reservoir tank slides right out, no problem.
J
1983 GL1100 Nekkid Bagger
1979 CX500C (wifes bike)
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01-20-2009, 8:06 PM
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RustyTec
Joined on 08-26-2007
Dallas Tx.
Posts 606
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Re: How do I get the frickin' coolant reservoir off
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Good point, that on a CX, it may side right out, as you say. - I didn't think they had a pulsar.
On a GL I remember having the; air-box, carbs, starter, battery box, mono shock, and the pulse gen cover off and still had a time getting it out. I still believe that it was pig-headdeness that kept me form removing the engine. Thus my recommnedation.
Maybe I am wrong to make recomendations to CX owners on this.
RustyTec ’81 GL500. Dallas Texas.
RustyVape Electronic Cigarettes Local NE Dallas, Texas
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11-06-2009, 10:19 AM
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PWG in Lowgap NC
Joined on 01-07-2008
Minutes from the Blue Ridge Parkway
Posts 2,380
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Re: How do I get the frickin' coolant reservoir off
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Ok, I'll just fabricate bracket and put a small jug under the hood. WTH Maybe a moonshine jug.
06 Suzuki S50 daily ride
CX500c
Honda Magna BC
age 72
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03-21-2010, 10:27 PM
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Arrne08
Joined on 03-18-2010
Sth Oz
Posts 10
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Re: How do I get the frickin' coolant reservoir off
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<BLOCKQUOTE><table width="85%"><tr><td class="txt4"><img src="/cs/Themes/default/images/icon-quote.gif"> <strong>phaserburn wrote:</strong></td></tr><tr><td class="quoteTable"><table width="100%"><tr><td width="100%" valign="top" class="txt4">...If you take the pulsar cover and carbs off, the reservoir tank slides right out, no problem...</td></tr></table></td></tr></table></BLOCKQUOTE>
Been there, done that, except that I HALF dropped the engine. That was easier than undoing the timing-case!
At the risk of repeating others:
TAI model CX 500s, 1982 (actually late '81) have the plate replaced by a timing case.
Just disconnect the shaft & boot;
Undo all BUT the front hanger bolt;
Get a trolley jack and take the weight;
Pull the bolts and swing the rear of the engine down ~1 1/4".
Bottle drops straight out. The only difficult or painful bit is carrying the jack and reconnecting the shaft.
I also replaced the pulser screws with allen screws (or cap-screws) so I can play with the timing advance without so much grief. Doing the same with the timing-cover screws would not go amiss either.
The more I look at this and consider situation, the more I think, "Any idiot could make a bottle that goes in there and comes out easily!"
...It's then I realise, Honda does not employ just any idiot.
Regards,
Arrne 08
CX500CC- Bleu Merde
GT550G1- Rattle & Hum
KZ440- project
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03-26-2010, 8:20 AM
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Sidecar Bob
Joined on 03-02-2006
Kawartha Lakes, Ontario
Posts 1,899
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Re: How do I get the frickin' coolant reservoir off
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The engineers at Honda designed these bikes so that the stuff you need to get at often is easily accessible and the stuff you only have to get at every 20 years or so is a bit more difficult to get at.
Would you rather they were like GM and did it the other way around?
Mr. Honda ('83 GL1000/Dnepr) summer
The Famous Eccles ('84 GX650EI/Velorex700) winter
WHY I HAVEN"T BEEN AROUND MUCH LATELY
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Honda CX500 & G... » CX500 GL500 Tra... » Technical Help ... » How do I get the frickin' coolant reservoir off
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