MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.
You are invited to join our public Boat Repair Forum to seek assistance from other members.
You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
You need to smack the end yokes and center section AFTER the cross install to get all parts "relaxed" or aligned up.
Meyle (German) # 3520 997 Art No 514 814 0002
replacement for #1-0005
dual zerks in apex of cross, 180* apposing.
these are of very high quality and are expensive!
Keep in mind that with these marine drive bearing crosses, we are placing them under the greatest and longest loads while driving straight ahead.
This means that the bearing cross articulation is minimal.
This means that the needles apply most pressure against the same area of the trunions more constantly, than if in a car/truck driveline where articulation is greater.
What this means.... is that these needles "point load", rather than placing the loads across a larger area of the trunion surfaces.
While greasing these may give us that "feel-good-feeling", no amount of grease will prevent the wear from point loading.
This is why we replace these more often than on our cars/trucks.
Next time that you remove a well used set......, look closely at the trunion surfaces.
You'll see the results of point loading.
.
RicardoMarine said:Keep in mind that with these marine drive bearing crosses, we are placing them under the greatest and longest loads while driving straight ahead.This means that the bearing cross articulation is minimal.
This means that the needles apply most pressure against the same area of the trunions more constantly, than if in a car/truck driveline where articulation is greater.
What this means.... is that these needles "point load", rather than placing the loads across a larger area of the trunion surfaces.
While greasing these may give us that "feel-good-feeling", no amount of grease will prevent the wear from point loading.
This is why we replace these more often than on our cars/trucks.
Next time that you remove a well used set......, look closely at the trunion surfaces.
You'll see the results of point loading.
I am replacing my bellows, and have looked at the u joints they feel smooth and lubricated except one spider seems to be able to move sideways in the cups about 1/16 or so.
Is this a sign of wear and should I replace them?
Thanks Rick. wasn't sure if i should start a new post or what.
There is no rule, per'se, that prevents us from posting to an old thread, and I suppose if the topic is identical, go for it.
However, in my opinion it is best to start a new thread, and perhaps link us to the thread that you found while searching.
I have been doing a ton of research and study on these volvo penta Dp-a drives, this is my first one. So the PDS bearings went and i pulled the engine and replaced them. I have been hesitant to replace the u joints cause i didn't want to have to pull the upper gear box top.
Which i have found and am reading a diff thread of yours Thread: 290 DP Upper Gear oil seal replacement
The bearing box on my drive has a bolt ground half way through from a previous issue i guess, cause there is no new wear on the bolt or yoke. There is new wear on the transome side of the yoke where it scraped the fly wheel cover, lucky for me it didn't break the FC. I am going to have a tough time getting the bolt out of the bearing box.
Since this is an A transmission, the 4 cap screw threads will be dry (as apposed to the Pre-A transmissions).
Typically these bolts will come out easily.
Suggestion:
Before trying to remove them, apply some propane torch heat to the main gear case where the thread inserts are installed. This will gently expand any rust/corrosion and will help with the removal.
No Oxy/Acet heat!
This old post coming back to life just reminded me to lube up those zerks. Thanks!! LOL