OX66 oil pump failure???

[slapshot]

While running back today, my alarm started going off and the power dropped to limp home mode. The oil level was flashing on the gauges.

The oil level in the main tank was 3/4 full, but the level in the small motor tank was right at the low level. This tank is usually right at the high level when running. I tried using the emergency switch, but that didn't work at all either. In the end, I made a mess and had to syphon some oil out of the big tank to put in the small tank to get back to the ramp. I'm betting my oil pump failed. Can anyone give any input or ideas? How hard is it to change? I have a tournament Saturday and may have to run to the dealer tomorrow to have them fix it.

Update...

pulled the pump in the back of the main oil tank out and here's what I have so far. At idle speed, I have 3.7 +/- vdc at the harness end of the wires and the pump does not come on. I connected a battery charger as a power supple directly to the pump (with 13 vdc) and the pump will run slowly for about 6 seconds or so and then stop. It does not restart by removing and reconnecting the power.
I'm thinking the 3.7 vdc is normal since the pump speed must vary somehow to allow for different oil flows at different engine speeds. I think this is not enough power to get the pump motor going.

Update 2....

I took a chance a pulled the electric pump on the main tank apart. There was a little corrosion inside and it seems that the 2 magnets had seperated from the casing. The magnets pulled out with the rest of the motor.

[chuckb]

I am assuming that you checked the filter since you pulled the pump apart? That filter will get clogged sometimes. Good Luck.

[MattH]

I hope you checked the filter before pulling it apart, the filter where the hose runs out of the tank can clog up with gunk and cause this. Best of luck, I hope you get it worked out. The OX66 is a gas & oil guzzler, but overall a pretty relaible beast

[slapshot]

Yes, I checked the filter. I blew in it and just normal oil came out, no gunk or anything.

Yes, they will drink alot, but usually are very reliable.

[lostsinker]

Originally Posted by slapshot

While running back today, my alarm started going off and the power dropped to limp home mode. The oil level was flashing on the gauges.

The oil level in the main tank was 3/4 full, but the level in the small motor tank was right at the low level. This tank is usually right at the high level when running. I tried using the emergency switch, but that didn't work at all either. In the end, I made a mess and had to syphon some oil out of the big tank to put in the small tank to get back to the ramp. I'm betting my oil pump failed. Can anyone give any input or ideas? How hard is it to change? I have a tournament Saturday and may have to run to the dealer tomorrow to have them fix it.

Update...

pulled the pump in the back of the main oil tank out and here's what I have so far. At idle speed, I have 3.7 +/- vdc at the harness end of the wires and the pump does not come on. I connected a battery charger as a power supple directly to the pump (with 13 vdc) and the pump will run slowly for about 6 seconds or so and then stop. It does not restart by removing and reconnecting the power.
I'm thinking the 3.7 vdc is normal since the pump speed must vary somehow to allow for different oil flows at different engine speeds. I think this is not enough power to get the pump motor going.

Update 2....

I took a chance a pulled the electric pump on the main tank apart. There was a little corrosion inside and it seems that the 2 magnets had seperated from the casing. The magnets pulled out with the rest of the motor.

Using a battery charger as a power supply is not a good idea and won't help diagnose the problem. Use a charged battery. The pump motor is not variable spped. You should have 12 v at the connections when it is being operated ( use the manual overide switch to test)

[slapshot]

The manual switch (emergency switch) does not work either. I pretty sure it's the pump. The oil level sensor in the engine tank is working because the alarm stopped once I manually filled up the tank.

I going to try and test the sensor here in a few minutes and see if I can get a full 12v to the pump harness.

[slapshot]

I put in a new pump and it worked fine after priming the pump. The engine tank filled right up like it should.