aq125a overheating

[ebko84]

what is the easist way or procedure to replace the elbow neck on the 270 outdrive. I hope i dont have to remove the leg thanks

 

[captmello]

Re: aq125a overheating

the best time to do it is when the upper gear box has been removed for general maintenance. Removing the upper is not difficult.

http://forums.iboats.com/showthread.php?t=309095

 

[ebko84]

Re: aq125a overheating

hi again, thanks for all your help this is a great forum.

history of the boat, garage parked. hour meter reads 295 hrs, condition of the boat reflects hours and p.o. story of care. orig. uphol pristine, clean, clean thru out. aq125a with 270. stored outside covered this winter.
starting to pull upper gear case on 270 out drive. to check or replace elbow neck. read thru many threads on sea water system so trying to trouble shoot it. put outdrive into large container filled with water up to cavatation plate. installed new empeller, installed clear tube, poured water into sea water fiiler neck, to help prime pump, water shows in the clear tube, start engine, no water coming thru tube. so figure sucking air on intake side. dis connected exhaust bellows, dis connected u joint bellows.

I found water in u joint bellows,my bet is that not good, how did water get in to the bellows. what is the fix.

i am very mechanical, and have history with water pumps. small engine repair. I think im going to find that even though the boat is in great condition all the seals and o-rings will be dried out to some extent.

thanks again

 

[Don S]

Re: aq125a overheating

295 hrs is a useless number and means nothing. The engine and drive are 25 to 30 years old.
If you have water in the bellows, it's probably due to a bad bellows. 2 years is all I would recommend running them. They are also very easy to change.
The big problem is if you have water in the outdrive oil. is the seal on the input shaft still good. You will also need new ujoints, and hopefully water did not get into the flywheel cover. If it did, you will have to pull the engine and replace the bearings.
Even if the engine has to come out, the complete does not have to be removed. Just the upper gear box to start checking things. Captnmello has given you the link to removal of the upper.

 

[ebko84]

Re: aq125a overheating

thanks don, this may be a repeat. i had a reply and then my computer crashed.

pulled the upper without draining the oil. the oil looked great. any secrets to removing the drain plug? i used a huge screw driver with a wrench. i had a good bite but it wouldnt move. so i pulled the upper anyway. lots of grease on the shaft. although new grease and good oil may just mean someone recently seviced it.

the u-joints have surface rust on them. they moved freely and smoothly, i would like to just clean them up and run for the season. the water in the bellows did not amount to much and i could not find any cracks or holes in it. i will replace anyway.

is there a parts break down showing all seals for the intake side of the sea water pump. bottom of the outdrive thru the transom to the empeller pump. pulled the elbow neck, it was in good shape. i will clean and inspect closely, gasket was dried out and brittle. was there susposed to be a o-ring?
it was missing.

there was a little play in the tube going down outdrive, i have read to replace that bushing as well.

i want to check out the entire intake side of the sea water pump. then if any problems remain move on to the pressure side.

i have read many of your replies. your information is super. i appreciate your forth rightness and or sarcasm lol keep it coming.

 

[captmello]

Re: aq125a overheating

is there any play in the drive shaft? The shaft the ujoint yoke fits over? Side to side, up or down?

The water intake fitting gasket has a built in oring on the bottom, that fits into the groove between the pivot tube and the intermediate housing. replace that gasket making sure the oring portion is seated correctly into the groove. The upper pivot bushing that supports the pivot tube could be worn. replacing the bushing means pulling the outdrive and complete disassembly of the intermediate section of the outdrive. I wouldn't jump into that job just yet.

# 29 is the seal, also need orings 7 and 34 for reinstalling the upper.
http://www.volvopentastore.com/Intermediate-Housing-Drive-270/dm/*******.738961737--**********.157579871--store_id.366--view_id.784589

There really are no other seals except a seal at the bottom of the pivot tube, but that portion of the outdrive is almost always in the water. It is not hard to change, just need to drop the lower gear assembly. If you end up doing that,

you'd need oring 24 from the link above, and

#44 from this link
http://www.volvopentastore.com/Lower-Gear-Unit-832701/dm/*******.738961737--**********.157579871--store_id.366--view_id.784590

And oring, part #125017, same as #34 from the first link.


Let us know how your progress goes.

 

[ebko84]

Re: aq125a overheating

thanks commander, i will up date as i do the work. im sorry for including more than one repair question or subject per post. have a great day.