No rattle on mine. I can see the face of what looks like ball bearing but cannot move it backwards. My guess is the ball bearing is supposed to be spring loaded. I think the idea is to protect against the thermostat failing to open - pressure build up in the heater only circuit then blows the ball bearing off its seat releiving pressure to the expansion tank outlet. It looks like remvoing the small core plug on housing would give accees to ball/spring whatever is in there to clean/free up.
On Wednesday, 2 August 2023 at 14:10:02 UTC+1 Jim Hearne wrote: > I think there is a ball bearing in there, it normally rattles around, you > can hear it if you shake the housing. > I always assumed it was to do with bleeding air from the system but i may > be wrong. > > Not heard of it being a wax pellet. > > Jim > > > *From:* list...@liberator-systems.co.uk > *Sent:* Wednesday, August 2, 2023 1:07 PM > *To:* Quantum Owners Group > *Subject:* [Quantum Owners] CVH Thermostat housing - Bypass Valve > > As part of cooling system overhaul I removed the thermostat housing on my > cvh motor. On the hot side of thermostat there is a passge way which looks > like it leads to the small bypass outlet on top of housing via some sort of > valve. It appears valve is supposed to seal via a ball bearing which I can > see part of but cannot get it to move. > Has anyone dismantled/replaced one of thes valves? - it look like a small > core plug would need to be removed to gain access. > I read somewhere on net that some cvh motors used a wax pellet in this > passage way which melted in overheat situation to protect engine. I think > my housing is an early type - part no.82SF-81K572 3A. Looking at photo > valve is up the lefmost hole.[image: 20190911_133901.jpg] > -- > -- > You received this message because you are subscribed to the Google Groups > "Quantum Owners Group" group. > To post to this group, send email to quantu...@googlegroups.com > To unsubscribe from this group, send email to > quantumowner...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/quantumowners?hl=en > > IMPORTANT NOTE: All information presented herewith is provided on an "As > Is" basis, without warranty or the implication thereof. Neither the Quantum > Owners Club nor the individuals associated with the Quantum Owners Club or > in the preparation of the above information shall have any liability to any > person or entity with respect to liability, loss, or damage caused or > alleged to be caused directly or indirectly by the instructions contained > within this or related message(s). > --- > You received this message because you are subscribed to the Google Groups > "Quantum Owners Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to quantumowner...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/quantumowners/281f2715-e143-453b-9ae1-97a818e335acn%40googlegroups.com > > <https://groups.google.com/d/msgid/quantumowners/281f2715-e143-453b-9ae1-97a818e335acn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to quantumowners@googlegroups.com To unsubscribe from this group, send email to quantumowners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to quantumowners+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/quantumowners/920e7e09-1654-4e50-9497-117e4d2c94acn%40googlegroups.com.
