4LW water pump lubrication

[jenevers 42]

Old manual (42.4) " once a week, two or three turns of the greaser". Modern Gardner-enthusuiast manual " not more than one grease cup full per 4,800 hours!!!!! Has the water pump changed since the old days?

[PeterG 9]

Simple answer is yes in the carbon bushes  have evolved over time and now you can buy a modern ceramic bearing which is totally different.

[jenevers 42]

6 hours ago, PeterG said:

Simple answer is yes in the carbon bushes  have evolved over time and now you can buy a modern ceramic bearing which is totally different.

Hmm. I got my replacement water pump from Gardner's shortly

before they closed down. So I assume it may have a ceramic  bearing,. But how would I know for sure?

[jonesthenuke 53]

I suggest the grease is for the ball bearing not the seal. Whether carbon or ceramic, the seal is lubricated with water.

[martyn 1 25]

On 02/07/2019 at 18:17, jenevers said:

Hmm. I got my replacement water pump from Gardner's shortly

before they closed down. So I assume it may have a ceramic  bearing,. But how would I know for sure?

If your has a greasers or grease nipple it is an earlier type and needs greasing, if its a later type with a carbon ceramic seal it will not have a grease point. If a later seal is retrofitted to a earlier pump housing the grease point is normally blanked off.

[jenevers 42]

On 11/07/2019 at 15:15, martyn 1 said:

If your has a greasers or grease nipple it is an earlier type and needs greasing, if its a later type with a carbon ceramic seal it will not have a grease point. If a later seal is retrofitted to a earlier pump housing the grease point is normally blanked off.

It has a grease cup that apparently only needs a slight turn once in a blue moon!