Workshop Time

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Workshop Time

Post by Logi on Sat Oct 26, 2013 8:07 am

As I mentioned earlier, my Jet has been running a little warm so its in the shed and is in the process of getting a new thermostat, rad caps, jubilee clips and new antifreeze. Though as I replaced the underseat cap and it's stopped I reckin I found the fault but as its a Hijet I'm not taking any chances.
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Re: Workshop Time

Post by Logi on Sun Oct 27, 2013 7:31 pm

Well the day was today, time to replace stuff Smile



And as I reckoned, wee weep, big trouble if left.
So i'll say it again,
REPLACE YOUR HOSE CLIPS!

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Re: Workshop Time

Post by HighlyJetted on Sun Oct 27, 2013 8:08 pm

Just encase people don't quite get the message your so wisely saying here...

Logi wrote:
So i'll say it again,
REPLACE YOUR HOSE CLIPS!

REPLACE YOUR HOSE CLIPS!
REPLACE YOUR HOSE CLIPS!
REPLACE YOUR HOSE CLIPS!
REPLACE YOUR HOSE CLIPS!
REPLACE YOUR HOSE CLIPS!
REPLACE YOUR HOSE CLIPS!
REPLACE YOUR HOSE CLIPS!
REPLACE YOUR HOSE CLIPS!
REPLACE YOUR HOSE CLIPS!

Rolling Eyes

Such cheap items cause big bloody problems
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Re: Workshop Time

Post by waz on Sun Oct 27, 2013 10:37 pm

Do you think I should replace my hose clips?
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Re: Workshop Time

Post by Logi on Mon Oct 28, 2013 8:12 pm

I think i'm going to replace my(new) thermostat Sad
F*cking bottom hose is chilly. Mad 
Hoping it's just an airlock, seems to have improved on the way home tonight, but time'll tell.
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Re: Workshop Time

Post by HighlyJetted on Mon Oct 28, 2013 10:40 pm

What a bleeding problem that is eh! silent
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Re: Workshop Time

Post by Logi on Sat Nov 02, 2013 1:12 pm

Well, i'm a Happy Hijetter Having a Hot Hose Henceforth Laughing 

Now got a toasty hose, drilled a few 1/8th holes in the thermostat, allows water to circulate and air out, reckon it was a bad airlock cos the stat worked in the pan, dead on 86 degrees, now normal service has resumed.
(luckily as I was shitting myself if I had to commute in the Shaguar )
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Re: Workshop Time

Post by HighlyJetted on Sat Nov 02, 2013 2:36 pm

Excuse me while I teach you to suck eggs

To bleed that bit, I put a brake pipe clamp over the big radiator hose.
Then I pull off the little pipe off the thermostat housing. Put a bung in the rubber.
And keep my finger over the hose barb on the thermostat hosing.
And let loads of water out from under my finger. Stop, squeeze the hose a load, and let more water out.


BUT.... the thermostat actually opens because water from the heater matrx return, goes into the block via that metal pipe next to the thermostat, then it goes under the bottom face of the thermostat to the water pump. -This is where the bulk of the thermostats "temperature sensing" bit is.

This heat initially opens the thermostat, until the thermostat is filled with cold water from the radiator, when it closes again.... etc etc. It works like a hot/cold gate for a bit, until the total system temp gets to a point where the stat never closes.

So if you keep your heaters on cold, you risk the thermostat not opening properly! (unless its an LPG where the vaporiser forms a permanent bypass loop)
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