Cooling System

[griff430]

I need to replace one of the motorised valves on the heater matrix, so I'm going to take the opportunity to replace the fluid in the cooling system. Are there any implications to leaving the system drained for a couple of weeks while I'm working on the car, or should I do the job and refil the system as soon as possible? Has anyone got any tips for changing the motor? It looks like a job that could involve a lot of swearing....

While I've got the system drained, I may also replace the rubber hoses near the motorised valves, because they look like they've seen better days. Are there specific part numbers I should be using, or could I buy a length of hose and cut it into required lengths?

Thanks,

Dan.

[Lig]

Hi Dan,

Can't halp too much but...from the 'bible' Steve does say that if you leave the system drained, make sure you block all entry into the engine pipes etc with rags to stop anything getting in (common sense really)??

also, i have a dodgy motor that i should replace (i assume you mean the ones down by the battery in the passenger footwell) and was told you could replace this without any fluid loss? the motor is separate from the valves? is this not the case??

Regards,
Lig.

[griff430]

Lig,

I think the motors can be disconnected from the valves without fluid loss, but I've heard it's easier to take the valve out of the footwell for easier access, and then refit it. As I'm thinking of replacing the hoses anyway, I thought I may as well take the valve out to do it.

Dan.

[simon.b]

You should be able to buy lengths of heater hose from most motor factors. Make sure it is heater hose, don’t be tempted to get more exotic hydraulic or silicone hose with a higher than required spec as these types are harder to get a good seal and normally require special or very good quality clamps.

Cheers,

Simon.

[griff430]

Excellent! I thought it might be a special part, with an expensive price tag....

Thanks for the info,

Dan.