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Old 05 November 2013, 12:54   #11
kubcat's Avatar
Country: Australia
Town: Sydney
Boat name: Lunasea
Make: Ribtec 890SX
Length: 8m +
Engine: Yamaha ME 421STI x 2
Join Date: Aug 2009
Posts: 459
Originally Posted by yam man View Post
the steering pin that arm is clamp to via the 17mm pinch bolt and the 30mm nut on top has as seal which stops sea water from entering.the seal ( where the grease nipple is located on top of shield )after time the seal starts to get hard a doesn't seal which then let's water in causing it sit under the steering arm which starts to corrode underneath the arm it's self . The arm has thrust washer underneath which stops it binding against the shield the material that arm an thrust washer sits on to corrode away allowing the pin to drop an all the wight of the sheild is on the arm making come loose . Inside boat were the arm is any corrosion wight deposits /rust ?
Yes, you are correct, there are signs of corrosion.

In the attached diagram, is the seal numbers 11 and 12 on page 5-1?

Diagram 5-2 shows the washer and the 2 nuts you referred to. Just thought I would add this so others can see what we are talking about.

Can this repair be done on the boat? Or it sounds like I might need to replace quite a bit more.
Attached Files
File Type: pdf Hydradrive Intermediate .pdf (559.7 KB, 27 views)
File Type: pdf Hydradrive Intermediate 2 .pdf (506.3 KB, 15 views)

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Old 05 November 2013, 13:07   #12
Country: UK - England
Town: southampton
Boat name: hydradrive
Make: yamaha
Length: no boat
Engine: sterndrives
Join Date: Sep 2012
Posts: 289
11 an 12 are by metal bushes for steering arm .number 13 is the seal on. 2006 onwards have double lip seals

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