Cat water pump bearing
I have a 2000 Itasca Horizon DP with 3126B Cat 300 engine. I have been very happy with the coach and engine/trans with one exception. The water pump bearing on the engine has a grease serk (sp) that i...
Forum Discussion
haddy1 wrote:
When I owned a 3126, I added an extension hose to that fitting and secured it to the breather pipe so I could lube from the bottom.
An extension done properly is OK. But make sure you have purged all the air from the extension before installing it. Said another way, fill the extension with grease before installing.
That is the only way you will know that that small squirt of grease is a small squirt of grease getting to the bearing instead of a couple feet of AIR. The air has no lubrication properties and if trying to purge the air from a long hose could blow the seals.
Since access to to the bearing/zirk depends on coach layout and how much attention the builder paid to "top of engine" access, there is no "one way is better than the other".
