Will
Well-known member
- Joined
- Sep 27, 2005
- Messages
- 558
- Hatteras Model
- 43' DOUBLE CABIN (1970 - 1984)
An update !!!
Problem was not the oil cooler at all. It turns out that the gear box vent is under the Sea Water pump and dip stick tube is on the side. A water leak developed in the pump's cover plate spraying water into the vicinity of both. Good thing it happened because removing the pump's cover plate revealed the early signs of impeller failure. A rebuilt Raw Water pump and flushing the gearbox put everything bac to normal.
-Original post-
Water recently appeared in the oil in one of my Capitol reverse gears (6-71s). There are no drain plugs and the manual says that oil must be sucked up through the dipstick tube. Come on now. Sucking 40wt oil through a small dipstick tube - a chore even if the oil is hot.
My plan is to remove the transmission oil cooler (the likely source of the water) and put the end of the oil supply hose into a bucket. Then start the engine and let the transmission oil pump pump the oil into the bucket, shutting the engine down as soon as the flow stops. The next step is to connect a bypass hose between the input and output hoses for the oil cooler, fill the gearbox with 10-40wt oil and run the engine for about 20 mins at idle, occasionally shifting between fwd, neutral and reverse. The last step is to flush out any remaining, contaminated oil. I should be able to suck the residual 10-40wt oil out through the dipstick tube.
Final steps are to install the repaired oil cooler, fill the gear box with 40 wt engine oil and check for leaks while running in gear.
Any thoughts or suggestions regarding this process will be most appreciated.
Thank you - Will
Problem was not the oil cooler at all. It turns out that the gear box vent is under the Sea Water pump and dip stick tube is on the side. A water leak developed in the pump's cover plate spraying water into the vicinity of both. Good thing it happened because removing the pump's cover plate revealed the early signs of impeller failure. A rebuilt Raw Water pump and flushing the gearbox put everything bac to normal.
-Original post-
Water recently appeared in the oil in one of my Capitol reverse gears (6-71s). There are no drain plugs and the manual says that oil must be sucked up through the dipstick tube. Come on now. Sucking 40wt oil through a small dipstick tube - a chore even if the oil is hot.
My plan is to remove the transmission oil cooler (the likely source of the water) and put the end of the oil supply hose into a bucket. Then start the engine and let the transmission oil pump pump the oil into the bucket, shutting the engine down as soon as the flow stops. The next step is to connect a bypass hose between the input and output hoses for the oil cooler, fill the gearbox with 10-40wt oil and run the engine for about 20 mins at idle, occasionally shifting between fwd, neutral and reverse. The last step is to flush out any remaining, contaminated oil. I should be able to suck the residual 10-40wt oil out through the dipstick tube.
Final steps are to install the repaired oil cooler, fill the gear box with 40 wt engine oil and check for leaks while running in gear.
Any thoughts or suggestions regarding this process will be most appreciated.
Thank you - Will
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