1. Depressurize system
2. Remove the pump. On my boat, it was a bit of a reach but not bad.
3. I put the pump in a vise. just loosely to hold it upright, Put the base of the pump down and the shaft up.
4. Remove the 4 bolts holding the base to the cover
5. Note the position of the alignment marks on the bottom of the base. You want to make sure those marks are in the same position when you put it back together. (They are on opposite sides of the pump)
6. The cover is a bit hard to get off. I had a long handled screwdriver that I worked at all 4 bolt holes to get it up 1/2" or so. Then I used the shaft of the screwdriver and a wrench to evenly pry the cap off. Be careful when it comes off as some of the pump balls may fall out (do this on clear flat surface)
7. Put the pump pieces back together that may have come loose. It's pretty simple arrangement
8. Remove the white plastic piece that stayed in the cap, the quad seal and the old wiper. I just pried the old quad seal and it popped the white piece out.
9. If you look at the drawing, it states that part 21 supersedes part 3 and 8. Mine looks to have been rebuilt before as I had part 21, the quad seal (The plastic ring with the o-rug on the bottom)
10. The wiper ring is the one with the bevel on top. I did not use the other seal (Kind of a square shaped O-ring if that makes sense. I think that matches part 3)
11. I reassembled the top part the following way.
a. Put the quad seal in first with the O-ring facing the pump
b. Put the wiper seal in through the top opening (Where the shaft pokes through) the wiper was flexible and this was the only way I could get it to be even around the edge
c. Put the white plastic piece in place. It can only go in one way. Note the order of the washers in the drawing. There is a thin and thick washer
12. Remove the three O-rings at the pump base and replace with the parts supplied. Apply even pressure on the rim of the cover.
13. Replace the cover, making sure the alignment marks are ok.
14. Replace the bolts. Tighten in cross pattern until all 4 are tight.
15. Reinstall pump, bleed system per instructions. (Note I tried a shortcut. I didn't disconnect the steering cylinder and mine bled fine. I can't reach it well)
Also attached is the O&M manual for the system. I purchased two quarts of hydraulic steering fluid from the local boat supply. I only ended up using one but kept the other with the extra O-ring kit and instruction so that If need I could fix one if I get stuck out on the lake.
A couple things I did learn:
The original fluid was red. This was not because it was transmission fluid but because back then it was red. They changed it because people complained that it would stain. Some people put transmission fluid in order to make the steering a little tighter. (Mistake) You can use transmission fluid if you need to get back to port but you need to bleed it out due to the trans fluid eating your gaskets.
It will take several times of spinning the wheel and bleeding the system to get the air out. Just follow the directions and eventually you will start to get movement of the ram. I did detach mine during this process. Also you will not get a hard over at the helm until you close the relief valves. This is done after you bleed the system.
I had a hard time getting the steering shaft to slid past the quad seal on one of the helms. A trick is to put the seal in some warm water and use Vaseline if needed.
All in all it took about 1/2hr to remove the two units. 2hrs to replace the seals. It would have only taking about an hour but I had the trouble with the one seal as mentioned above. About 4-6hrs to bleed the system. I took a few breaks and watch a little TV. If you have a couple of people it would go a lot quicker.
In conclusion. If you follow the directions this is not a bad project to take on. I am definitely glad I did this myself. The reason is before this I had a general knowledge of the system. Now if I encounter any difficulties especially while out of port I have the skill and knowledge on how to correctly rebuild and bleed the system. I hope the information is helpful and if you have any questions just let me know
This post has been edited by kemper: 29 August 2011 - 03:02 PM