Citroen Relay 3.0 Hdi 160Ps Water Coolant Pump Failure

[pikesrelaybus]

Aha!!, we have bearing noise and upon removal of lower splash guard a small pool of water. I'm fairly sure my water pump has failed but how on earth do you get to it?? I've ordered a new pump and gasket and been under there before when my alternator/wp (inner) belt tensioner failed, that was a complete faff but that pump is buried well above. The gap is just big enough to get my arm up there but it gets scrapped senseless. Still, put up with a bit of pain than the echo of one's wallet after it goes to the dealer.!!    Anyone done one before got any hints to make the job easier.??

 

thanks in advance..

[paul.h]

Citroen's procedures say to remove the engine undertray, the right front wheel, the right headlight and the engine mounting to help access but it may not be necessary to do all this. Then the alternator/pump belt tensioner pulley bolt is turned anti clockwise to release the tension and pegged with an 8mm rod so the belt can be removed. If you have air conditioning you should not need to touch its flexible belt unless you want to replace the water pump belt. There are 5 bolts holding the pump and its gasket on, 1 long one and 2 lots of 2 different ones. The 10mm bolts are done up 50 Nm and the 8 mm ones 25 Nm so may be tight to undo. A new gasket will be needed.

 

I could not find the coolant capacity if you need to change it, maybe a dealer may tell you if you get the water pump and gasket from one.

 

Note that the water pump removal procedure is part of the one for stripping the engine down and not just for pump renewal but I do not think the engine needs removing since the official time for pump replacement is nearly 2½ hours but engine replacement is 19 hours

[pikesrelaybus]

Cheers Paul.h, I also see this procedure and I'd imagine 2.5 hours would be adequate time with a engine on a stand. I intend to capture most of the coolant using a single hose that's yet to be identified, just enough to reduce the level below pump height... that's the plan, whether that works I have no idea.

 

As far as pump removal, I see the bolts you mention but I'm not sure if the pump assembly also forms part of the engine mounting. I have certainly changed the tensioner, bit of a fiddle job. It was fiddle as there was little access between the bulkhead and the edge of the engine. Until the new pump comes and I start digging I will not know if this is a job for me but if Citroen can do it without engine removal then (with the right procedure) so can I.. 

 

I was half hoping somebody here might have done the job and was helpful with some pointers. I'm not sure removal of the headlight is going to help!!..

 

I changed the tension with the right wheel removed and under tray, note my under tray only held in with 2 front fixings so glad I looked! report back in a few days.. but thanks for your help..

[paul.h]

When I changed the water pump on a C3 I did not bother draining down, just removed the pump and let the coolant run in to a bowl.