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Outdrive service

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FredBetz

New member
Had my ten year old Mercruiser I/O outdrive serviced. During first use gear oil alarm came on. Took back to dealer. They said the gear lube hose was dry rotted. I would think the hose should have been at least inspected, but probably should have been replaced. Please advise what this outdrive service should include. Thanks, Fred
 
[h=2]Here's a start -


How to Service Mercruiser Outdrives[/h]
Tools needed: Socket Set & Socket Wrench,Screwdriver, Drive Gear Lube, Prop shaft grease, Allen Set, Alignment Tool, Replacement parts if needed, and Repair Manual (recommended).

Warning: During reassembly, always use new gaskets and approved gasket sealer. Always refer to your service manual.

1. Grease the Propeller Shaft:
-Remove prop nut and all associated hardware.
-Pull the prop straight off
-Remove the thrust hot
-Grease the prop shaft
-Inspect prop for damage
If any damage, get the prop shaft rebuilt

2. Replace the Gear Lube:
-Remove the filler plug. Near the bottom of the drive
-Remove the vent plug. Near the top of the drive- Completely drain the gear lube.
-Inspect the gear lube for signs of damage. Moisture or metal filings-Fill the drive with new lube by pumping into the bottom hole.
-Replace both plugs

3. Clean the Outer Surface of the Drive:
-Clean the outer surface
-Inspect the outer surface for any nicks
-Touch up any nicks with Mercruiser paint and primer

4. Remove the Out Drive:
-Disconnect the cylinders
-Remove the bell housing, by removing the (6) nuts that secures it
-Pull the drive straight back

5. Inspect the U-Joints and Gimbal Bearing:
-Inspect both the U-joint and gimbal bearing- Replace if- Noise or stiffness are apparent
-Inspect bellows- Replace if- damaged, moisture, or stiffness are apparent

6. Engine Alignment:
-Check the engine alignment by inserting an alignment tool
*If it does not fit easily into place, the engine needs to be realigned

7. Impeller Replacement in a Raw Water Pump:
-Separate the lower unit from the outdrive
-Remove the water pump cover
-Pry the old impeller out with a screwdriver
-Replace with new impeller


http://www.powerboatnation.com/drive-systems/143-how-service-mercruiser-outdrives.html
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