T25 - 1986 Water Cooled Diesel 1.6 - Draining the Coolant

Post by **nenenaiad** » 29 Jul 2008, 10:53

Hi,

Could anybody give me a number of bullet points to enable me to replace ALL the coolant in my T25 - reference in the subject line.

The reference I am using tells me to and I quote "Drain the coolant, by removing the lower water hose at the pump, and the connection pipe; or the centre hose ".

To be honest the lower water hose at the pump is obvious but it does not make clear what or which the "and the connection pipe" is.

Regards

Dave

Post by **DivingDaisee** » 29 Jul 2008, 12:40

When I did it I removed the pipe at the bottom of the radiator. Basically the lowest points in the system. You will still have some old coolent in as it gets trapped all over the place! You could flush it with water or radiator flush first though...

The Wiki has very good advise on filling it again. I found that a slope helped in filling but if the system is working correctly, keeping the overflow tank filled bleeds it nicely. Also pumped (squeezed) the pipes to drive the air out!

I have a 1985 1.6D - hope this helps!

Post by **oldiguana** » 29 Jul 2008, 22:38

ah duck jus ram a hose up eet!

Post by **HarryMann** » 30 Jul 2008, 01:28

Won't drain fully unless you disconnect about everything... so flush, maybe from radiator end too

On +PLUS+ side , they bleed easily on the flat, just keep topping up the header tank pressure tank (not overflow tank), and bleed rad once or twice max with engine running, flood the header tank, put cap on (blue cap) and connect overflow tank hose up and top that up to corerct level, job.. Check for next week that all is OK, maybe beled again when hot but prob. no air to be found.. easy peasy!