Torque Specs?

[H2O]

I need the torque specifications for the transmission to prop shaft coupler bolts on direct drive. Thanks. Also, which sealant is used to install prop shaft strut?

[Andrew]

RE: Torque Specs?

i just torqued the bolts in a criss-cross pattern until they all bottomed out. i was sure to have a fairly even amount of pressure on each bolt, but didn't use a torque wrench. i've been runnin her 4 yrs now with no vibration whatsoever.

as for the strut, i'd recommend PERMATEX RTV sealant in a gray tube. i'm sure that there are better recommended marine applications, but this has always worked for me and can be found at ur local parts house.

[darrel409]

RE: Torque Specs?

I just put in a new shaft and there were no torque specs for the coupler bolts, just the 1 1/16th bolt on the inside of the coupler...60- 70lbs. I tightened just like Andrew said and used 3M5200 sealant. The marine sealant is available at home depot. Alignment is the bitch in that job.

[boatech]

RE: Torque Specs?

3M 5200 IS THE STUFF YOU WANT ITS A MARINE PRODUCT AND WILL LAST LONGER AND DO A MUCH BETTTER JOB THAN GREY RTV

[DavidF]

RE: Torque Specs?

But, 3M 5200 is also an adhesive which is NOT necessary and makes future removal difficult. Consequently, I recommend Life Boat Caulk. Life Boat Caulk is a never hardening, under water line rated marine sealant. IMHO, there is nothing on a CC that needs to be glued in place by using the 3M products.

[Zwengit]

RE: Torque Specs?

You'd better ask your dealer what to torque the coupler bolts to. If you've got a heavy hand you might just cause 'em to shear off early, and if they are not tight enough you can find 'em in the bilge later on. Do it right.

[Andrew]

RE: Torque Specs?

if u know what i mean by "feeling the bolt bottom out" then u should have no problems at all. but it definetly won't hurt to ask the dealer, that way u can blame them if anything goes wrong

[H2O]

RE: Torque Specs?

Dealer recommended Lifeboat Caulk. That's what I used. $25 per tube! Said approximately 40 ft-lb on the bolts.

[darrel409]

RE: Torque Specs?

$25 for sealant?? :shock: Ouch! The 5200 is less than $6 at Home Schlepo. It is a very high quality sealant and is recc. by SKIDIM. I have never tried Lifeboat Caulk...and at $25 a tube I may not.

[skinautique]

RE: Torque Specs?

If you are going to use the 3M caulk, use the 4200. You will not be able to remove the 5200 that easy. CC uses 4200.

[richard]

torque/sealent

I experienced 30-40lb for the coulper screw is enough, turn the prop by hand to feel the smoothness of the prop shaft before/after tight the screws, some case is the shaft turning become tight after tighting all the screws, will cause vibration when drive to water, this mean need engine alignemt ,or coulper not coulping perfectly, I belive CC use 4200 for struct sealent.

[boatech]

RE: torque/sealent

5200 can be removed without a problem its the only thing to use. nothing last like 5200 ive tried them all. you want it water tight for yrs to come 5200 the stuff. look no furhter.

[H2O]

RE: torque/sealent

450 hours on boat. Very stiff steering. Replaced the steering cable. Removed rudder to clean and regrease. Old grease almost all gone and what remained was bad. Steering back to one finger easy again. Well worth regreasing rudder. Toughest part was removing the four hoses from the fuel tank barbs. Any suggestions to make this easier next time? Thanks for the advice, especially regarding the rudder.

[darrel409]

RE: torque/sealent

Plumb a zerk to the stern.

[KPNautique]

RE: torque/sealent

Darrel409 - I assume you drilled and tapped the fitting to the copper line on the rudder assembly- but why did you put it through the hull? Do you have a pic of the other side?