truzza
21.06.2021 16:10:25
Go to the forum that you want to post under. Above the left column that shows the numerous post "Titles", you'll see a blue button "+ Start a new post".
See full version: What Type of Lower Unit Sealant
Go to the forum that you want to post under. Above the left column that shows the numerous post "Titles", you'll see a blue button "+ Start a new post".
Posts are very vague and with no information as to what type and/or model of motor.
I use general purpose white silicone sealant on my lower unit and it does the job
+3 regarding the original question. It's Friday night and I just figured the OP might have been dippin' in the sauce before posting..made no sense to me. [links]
I suggest that before you continue with more posts that you read the section for new users, etc.
Re: What Type of Lower Unit Sealant [links]
MG015 - Mark 20H / 1954-56 / 2cyl / hp varies with RPM unconverted [links]
MG002 - KD4,KE4 Rocket and Rocket Deluxe 2 cyl 6 -7.5hp more
MG016 - Mark 25 Hurricane 1955-1957 also Wizard WN7, WN7A, WM7A
MG100 - Mark 30 Turbo four / 1956-58 / 4cyl / 30p /also Wizard WA25, WA25E
MG101 - Mark 30H,55H racing motor 1955-1958
MG017 - Mark 28/28A Super Hurricane / Merc 200
The MT that did it before, didn't appear to have used anything either. [links]
Per RB, for salt water use, do not use any loctite on them (for the housing)- (Loctite 572 IS recommended in the manual). more
If you are in Roanoke, VA, where is the boat?
Perhaps if used religiously in fresh water and changed yearly, you might need the Loctite..
The LU itself, I put just a touch of the Yamaha waterproof grease (also used on the splines/bushing)..
The manual again calls for Loctite on the LU bolts.
There's no torque spec's, just good and snug.. They came out W/O an issue
Hello,
I’m moving along in my restorations of a HD-25 and TS-20. These are my first older outboards I’m restoring with the HD-25 being the first of the two. I’m working on seals for the lower unit/gear case and was wondering if there are any current model gaskets/seals for them? I have the prop shaft seal (Sierra 18-2035) but I’m looking for 43-300,687 and 43-301,975 I believe for the prop side of the gear case. I have gasket material to make my own but wanted to pick everyone’s brains before I go that route. Thank you for everyone’s help.
The 301-975 part shows up as a spring, so I’m guessing that the driveshaft seal under it (300-687) is probably a leather seal,
but I may be wrong. If it’s leather, you’ll probably have to make your own. I would not look for old stock gaskets…….
probably not in good shape by now. Dealers probably have sold parts for that motor in 45 years!
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