Thursday, October 23, 2008

OJ Dripless Shaft Seal Installation

Ski Nautique 206 with PCM ZR6

1. At this point the driveshaft has been separated from the transmission coupler by removing the 4 bolts/locknuts. This boat uses a 1-1/4" nylock nut to retain the coupler to the shaft, some boats use a 1-1/16" nut, also make sure to remove (if any) set screws on the coupler. Using the ARE coupling wrench (Item #2215) and 1-1/4" socket wrench we were able to secure the shaft and loosen the nut. You could use a board between the prop and hull if no coupling wrench is available.

*Notice we have plenty of room to get the socket wrench into the coupler, some boats you will not have enough driveshaft length to get a regular socket wrench between the couplers. Consider Item #2216 or #2217 sockets with wrench flats for limited space.

2. We now used 4 pieces of all-thread cut about 5" long with nuts on each end and placed a deep socket between the couplers. Tighten the couplers together evenly and the coupler should pop off. Single taper couplers will not pop and must be pressed all the way off (mark where the old coupler was positioned on the shaft before removal).

3. Dual tapered couplers will slide right off the shaft, single taper couplers keep cranking. Make sure to keep up with your woodruf key or keyway.

4. Coupler removed.

5. Loosen the 2 hose clamps and remove the stuffing box and hose.

6. We have covered the end of the shaft with the supplied seal protector (gray plastic) to be sure not to damage the graphite o-rings when sliding the new seal onto the shaft. The seal is supplied with a cardboard tube to help keep the o-rings from constricting. If you have trouble sliding the seal onto the shaft insert a socket slightly larger than the cardboard tube and let it rest for a little to enlarge the o-rings.

7. Seal securely hose clamped in place with water supply barb pointed towards the direction you want to route the hose.

8. Coupler and safety collar back in place. Notice how the 2 couplers meet perfectly indicating good engine alignment (no more than .003 gap between the faces). If you have a single taper shaft usually the coupler will need to be heated in an oven to expand it enough for reinstallation.

9. Water supply line run back to the 1" hose from the exhaust manifold to the thermostat housing.

10. This engine was fresh water cooled and presented a problem due to the short length of hose going into the rear of the exhaust manifold. Raw water cooled engines wont experience this due to the longer length of hose and location into the front of the manifold. The supplied t-fitting had to be cut shorter on each end and a 90 degree elbow was used to make the bend needed. Also since the hose was at a low point on the manifold we ran a loop of the water feed line higher than the manifold to prevent siphoning the water from the manifold when the engine was shut down.

*If you have any questions give us a call (803) 345-0996*


  1. The supplied t-fitting had to be cut shorter on each end and a 90 degree elbow was used to make the bend needed.

    inboard marine engines

  2. hey this is the good blog recently i got my boat installed by the marine company, they provided me outstanding services and all the things done at very reasonable price.
    inboard marine engines 

  3. Thanks for the awesome walk-thru. Are there any huge differences in the maintenance of the inboard propeller vs an outboard propeller?

  4. Hi,
    All the materials that are chosen for the making of Custom made gaskets are chosen according to the use it will be put to. A manufacturer uses such materials as neoprene, poly silicon, rubber, and metals, plastic, rubber etc, sometimes a combination of various materials is also used in the manufacture of custom made gasket.

  5. Hello, You have posted a nice blog really.
    Thanks for sharing this.
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  6. Hi, this is really awesome and helpful information.
    It will help people. thank you so much for sharing this.
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  7. I have the need to replace my strut bearings. Boat has been out of commission for about 3 seasons. Time to get it back to the deep blue seas. This is the only place that I look for parts and technical info. Thanks for the input. This site is blessed!

  8. Our ski boat is having problems which makes me sad because we still want to take it out as much as possible before summer ends. I'll have my husband take a look at this and see if this could help it. Our boat is fairly new so it should be working fine.

  9. Great reading. Thanks for all the info about engine covered the end of the shaft with the supplied seal protector is fantastic info.Check Here

  10. Is it ok to lubricate the o-rings with either oil or liquid soap for easy installation over the shaft. I have a v-drive, so it may be challenging. Seems I read someplace about putting tape over the end of the shaft to protect the o-rings.
    Any videos anywhere to watch for the installation?