D6B water pump bearings bad

Woops. Forgot I already started a thread on this. Nevemind. I am old AND blonde! haha

You might just put your hand over the front of the fan and feel if there is a big nut holding the fan to the hub. The fan on my Cat 12E grader was loose and I thought the water pump bearing was going out because the fan had a 1/4 inch side play. It was suggested by a friend at the SM Tractor show to check the nut. It was loose and tightened right up. Certain models of the D-6B and the 12E share the same engine.

You might just put your hand over the front of the fan and feel if there is a big nut holding the fan to the hub. The fan on my Cat 12E grader was loose and I thought the water pump bearing was going out because the fan had a 1/4 inch side play. It was suggested by a friend at the SM Tractor show to check the nut. It was loose and tightened right up. Certain models of the D-6B and the 12E share the same engine.

You are the MAN! It was loose. I tightened it up All the noise is gone. Still some play, but less. I'm happy. Greased it up just like the book says. Thank you very much.

Hi Team,
I seem to recall that the shafts used to be cross drilled so as a castellated nut and split/cotter pin could be used to help prevent this problem--maybe they modified things and did away with the pin later on??

May pay to check if this is so and fit a pin, if needed, to stop this happening again--or a dab of Thread Lock compound would help too if no pin system is in place.

Here down under a cotter pin is used to hold the cranks on an older bicycle--round solid pin with a reduced diameter and threaded one end, with a tapered flat machined on one side of the shank--just saying is all--very confusing all our differing terminologies for the same item between our countries.

Cheers,
Eddie B.

[quote="edb"]Hi Team,
I seem to recall that the shafts used to be cross drilled so as a castellated nut and split/cotter pin could be used to help prevent this problem--maybe they modified things and did away with the pin later on??

May pay to check if this is so and fit a pin, if needed, to stop this happening again--or a dab of Thread Lock compound would help too if no pin system is in place.

Here down under a cotter pin is used to hold the cranks on an older bicycle--round solid pin with a reduced diameter and threaded one end, with a tapered flat machined on one side of the shank--just saying is all--very confusing all our differing terminologies for the same item between our countries.

Cheers,
Eddie B.[/quote]

My book shows the nut and cotter pin. I would guess mine was worked on at some point and it was left out. Going to try and get one back in it.

"Here down under a cotter pin is used to hold the cranks on an older bicycle--round solid pin with a reduced diameter and threaded one end, with a tapered flat machined on one side of the shank--just saying is all--very confusing all our differing terminologies for the same item between our countries."

Eddie B, you jogged my memory when you talked about the bicycle cotter. Took me a while to remember where I had used one. I used to have an MG Midget years ago and they were used in the front end. It was called a fulcrum pin.

[attachment=52670]fulcrum pin.jpg[/attachment]

Hi Hdonly,
yep, depends on the engineer sometimes and country of origin and where the keeper pin is used.
I do recall lots of them in Austin Sevens that we cut around into 3/4 Speedway Midget Race Cars T/Q's) here down under.
They held the King pins in place and the cable brake levers to their shafts to name a couple.

Cat use them and simply call them a pin. Most notable recollection was in the Range Transmissions of the 9 speed Torque Divider transmissions used in scrapers and off highway dump trucks of the day.
Some times the un-itiated would put them in back to front and this changed the orientation of the levers in the control valve pack by virtue of the angle cut on the side of the pin--this upset the linkage adjustments and if altered to suit some gears could not be got--did a few fixes in the field after clients mechanics had had a play.
People wonder why confusion reigns supreme because of all the terminologies used for simple items--LOL--t'is the way of the world.
We can only be amused.
Best Regards,
Eddie B.