Mercury 150 oil pump drive gear failure

[bdc]

I have a 1997 150 carb merc v6 and the oil system drive gear failed. I had it replaced for $800 and when started it ran for about 10 minutes and the oil waring horn came on. The mechanic says I overheated the engine (running with a water hose) and damaged the just replaced gear.Question ? Can a short time over heat melt or soften or damage the plastic material drive gear?

I can't afford another $800 so I will run a 50:1 gas mixture. I need advice on disabling the oil pump REFERENCE thread 2241. I have two oil tanks one engine one reserve. A question is the crank case vacuum/pressure hose to reserve tank- how do I cap it off or disable it? What affect will this have on the engine ?

I have a plate to cove the oil pump hole so I can remove it but what about the drive shaft? Remove it?

 

[j_martin]

Re: Mercury 150 oil pump drive gear failure

I have a 1997 150 carb merc v6 and the oil system drive gear failed. I had it replaced for $800 and when started it ran for about 10 minutes and the oil waring horn came on. The mechanic says I overheated the engine (running with a water hose) and damaged the just replaced gear.Question ? Can a short time over heat melt or soften or damage the plastic material drive gear?

I can't afford another $800 so I will run a 50:1 gas mixture. I need advice on disabling the oil pump REFERENCE thread 2241. I have two oil tanks one engine one reserve. A question is the crank case vacuum/pressure hose to reserve tank- how do I cap it off or disable it? What affect will this have on the engine ?

I have a plate to cove the oil pump hole so I can remove it but what about the drive shaft? Remove it?

Not likely unless you burned the wiring and paint off and smoked up the whole neighborhood.

Odds are the oil pump froze and took the original gear out. I would fire that mechanic for being incompetent.

Here's the procedure for removing the oil injection system.

Re: oil injection removal Merc V6 only

You need part number 43453 if it is available. That retains the pump driveshaft bushing and plugs the hole where the pump mounts. Then remove the oil components and the warning module. You'll also need to remove the fitting that the oil tank pressure hose attaches to and plug the hole in the block.

Order three stickers (37-818029 1), one to mount near the fuel fitting on the motor, one for the dash, and one near the fuel fill fitting on the boat. They'll alert the operator that the gas needs to have oil added. One frequent problem we see here regards the infamous "brother-in-law" that forgets to add oil to the gas and roaches the motor.

You should probably replace the fuel lines where the fitting for the oil T's into the fuel line with a single piece of fuel line.

hope it helps
John