Help please

[Goldnomad]

Can any one tell me what the purpose of the small bolt is that is located on top of the water pump on a 200TDi motor?


I tried to upload a photo but I couldn't do it


Robert

[workingonit]

Are you referring to the thermostat housing by any chance; and not the pump (coolant pump as Haynes manual calls it)?

Nice gold nugget by the way.

[Goldnomad]

No, it is the water pump. You can see the bolt head in the pic.
Yeah it is a nice nugget. My wife found it several years ago.

[bee utey]

No, it is the water pump. You can see the bolt head in the pic.

Looks like someone added a port for greasing the bearing. I've done so myself in the past. Remove the plug, it looks like 1/8 BSP, if there's grease under there, temporarily install a matching grease nipple and put another shot of grease in there.

[Killer]

I can't say for certain on a 200tdi but on a series water pump, that bolt would be to position and retain the bearing. The bolt should have a spigot on the end of the thread which locates into a hole in the bearing.

Cheers, Mick.

[Goldnomad]

Sorry to keep at it but I don't believe it for greasing .
The bolt is item 2. It's called a WATER PUMP LOCATING SCREW
Any other ideas?


Just click on the pic to enlarge it

[Blknight.aus]

it the locating bolt for the bearing casset assembly to provent it from turning in the casing and schredding it.

[Goldnomad]

Ahh. Ok. Many thanks Dave.


Robert