Cooling issue update...turns out a broken thermostat, where the pin is held by a plastic bridge was broken. Thermostat sticking, opens a bit . But not a lot, so bike temp at 100c.
Purchased a second hand Aprilia thermostat after reading post from paso site. I looked at how to sort out hose size difference and angle, Aprilia in take is straight, where 907 is a right angle. So decide to take apart collar around thermostat and swap over the right angle piece from 907 thermostat to Aprilia thermostat. Slow process to bend up collar, 907 thermostat pops out and not found for days!!! No matter as I silicone and re attach collar. No leaks after 300km, temp at 85 while riding at 100kmh in 35c heat. I fitted a new Spal 5" fan as well. Temp gets no higher than 95c in traffic on 35c day. I think it a success. Best part is I still use Samco silicone hoses, looks original and no need for reducer hoses etc. I will still carry a spare on up coming 3000km Tasmania trip and hoses etc just in case my fix fails. I buy last and only Aprilia thermostat left in Australia ( yes seriously) and order another so I can make another spare.
Working perfectly I think, though one day in cold rain temp dropped to 60c. I felt thermostat should've kept it at 75c.
Thermostat repair
- paso750
- paso grand pooh-bah
- Posts: 5558
- Joined: Sun Jul 18, 2004 12:00 am
- model: 750 Paso
- year: 1987
- Location: southern Germany
Thermostat repair
Nigel H. posted the following on FB and gave the permission to copy it in the forum.
- Attachments
-
- 1.jpg (127.38 KiB) Viewed 8572 times
-
- 2.jpg (183.34 KiB) Viewed 8572 times
-
- 3.jpg (97.48 KiB) Viewed 8572 times
-
- 4.jpg (94.96 KiB) Viewed 8572 times
-
- 5.jpg (113.05 KiB) Viewed 8572 times
-
- 6.jpg (168.76 KiB) Viewed 8572 times
-
- 7.jpg (155.92 KiB) Viewed 8572 times
-
- 8.jpg (124.01 KiB) Viewed 8572 times
-
- paso grand pooh-bah
- Posts: 1527
- Joined: Thu Jun 21, 2007 12:00 am
- model: 907 I.E.
- year: 1991
- Location: Gothenburg, SWEDEN
- paso750
- paso grand pooh-bah
- Posts: 5558
- Joined: Sun Jul 18, 2004 12:00 am
- model: 750 Paso
- year: 1987
- Location: southern Germany
Re: Thermostat repair
It is in the FAQs now. I posted here because many wouldn't have seen it.
- Finnpaso
- paso grand pooh-bah
- Posts: 3090
- Joined: Mon Jul 26, 2004 12:00 am
- year: 0
- Location: Finland
Re: Thermostat repair
VERY GOOD job, Gerhard
Ps. I still WONDER, that You have sooooo.... much time to be in internet with thesekind of things?
Ps. I still WONDER, that You have sooooo.... much time to be in internet with thesekind of things?
Antti http://www.youtube.com/watch?v=HeKOh3XoXPg&NR=1
KTM 990 Adventure -08 metal dark grey
Paso 750 -89 red/metal grey
907IE -91 red/metal grey
907IE -91 red
2xST4S -02 red/metal grey
ST2 -01 red/metal grey
Volvo V70 Bi-Fuel Classic/titanium
KTM 990 Adventure -08 metal dark grey
Paso 750 -89 red/metal grey
907IE -91 red/metal grey
907IE -91 red
2xST4S -02 red/metal grey
ST2 -01 red/metal grey
Volvo V70 Bi-Fuel Classic/titanium
-
- Posts: 24
- Joined: Fri Jul 25, 2014 10:23 am
- model: 907 I.E.
- year: 1992
- Location: Canberra, Australia
Re: Thermostat repair
Just chiming in to say that I replaced my failed thermostat over a year and 3k+ km ago using the method described in the OP. A new ST2 t'stat was the donor.
No silcone used on reassembly, the new O-ring from the donor and some care peening down the clamping ring was all that was necessary. Works a treat and no bodges required.
No silcone used on reassembly, the new O-ring from the donor and some care peening down the clamping ring was all that was necessary. Works a treat and no bodges required.
- blazing928
- Posts: 222
- Joined: Tue Sep 15, 2009 4:08 am
- model: 907 I.E.
- year: 1991
- Location: Melbourne Vic, Australia
Re: Thermostat repair
Glad my idea is still working...always a risk!
Cheers nigel
Cheers nigel
Nigel
91 907IE - full restoration
91 907IE Red, Wilbers, Staintune Conti, Corbin,
MPL Slipper,Ceramic exhaust
Lambretta LI150 S3
87 928S4
http://www.paolopirozzi.com/it/ - around the world on a Multistrada
907, its not a bike , its a cult
91 907IE - full restoration
91 907IE Red, Wilbers, Staintune Conti, Corbin,
MPL Slipper,Ceramic exhaust
Lambretta LI150 S3
87 928S4
http://www.paolopirozzi.com/it/ - around the world on a Multistrada
907, its not a bike , its a cult