The C.19704 Valve (Vacuum Operated) controlling water supply to heater (plate 88 no 28) is no longer available. NOS and used ones do rarely come on the market.
There are a number of options when yours fails:
1 When my heater valve failed and blew coolant all over the engine compartment last year, I installed manual valve on P1B79909DN. I could have in ‘on’ or ‘off’. One advantage is that the 195°F (90°C) coolant can’t leak past the valve making the outside air coming through the cowl vent even warmer! I have now installed a NOS c.19704 that Jose found.
2 The Ford heater valve, Part No. 74614, plastic, made in China, will fit in the same area as the original heater valve. You need to buy the version that is NORMALLY CLOSED / OPENS WITH VACUUM because the same part number comes in the two different operating modes. Sprayed flat black it would probably look OK.
3 A company in Australia (
www.advancediaphragmoptions.com) rebuilds vacuum actuators. They told me “Most often the corrosion has made repair not viable. If the aluminium housing is ok it is fixable. (About one in ten so send as many as you can in hopes of getting one rebuilt)
These are a unit that rely on three things working properly.
1.The activating diaphragm.
2.The water sealing diaphragm.
3.And the heater valve seat.
If they are suitable to repair cost can vary from AU$150-275
All the parts need to be made to suit. Nothing is available as a repair part.”
Cheers,
David
The C.19704 Valve (Vacuum Operated) controlling water supply to heater (plate 88 no 28) is no longer available. NOS and used ones do rarely come on the market.
There are a number of options when yours fails:
1 When my heater valve failed and blew coolant all over the engine compartment last year, I installed manual valve on P1B79909DN. I could have in ‘on’ or ‘off’. One advantage is that the 195°F (90°C) coolant can’t leak past the valve making the outside air coming through the cowl vent even warmer! I have now installed a NOS c.19704 that Jose found.
2 The Ford heater valve, Part No. 74614, plastic, made in China, will fit in the same area as the original heater valve. You need to buy the version that is NORMALLY CLOSED / OPENS WITH VACUUM because the same part number comes in the two different operating modes. Sprayed flat black it would probably look OK.
3 A company in Australia (www.advancediaphragmoptions.com) rebuilds vacuum actuators. They told me “Most often the corrosion has made repair not viable. If the aluminium housing is ok it is fixable. (About one in ten so send as many as you can in hopes of getting one rebuilt)
These are a unit that rely on three things working properly.
1.The activating diaphragm.
2.The water sealing diaphragm.
3.And the heater valve seat.
If they are suitable to repair cost can vary from AU$150-275
All the parts need to be made to suit. Nothing is available as a repair part.”
Cheers,
David