Thanks for the confirmation that NAPA still sells GMB. It's been a while since I checked. That "1100" is the GMB PN too.
But are you saying that NAPA had the PDQ u-joints too? That's news to me.
The zerks on the end cap I always replace with flush style fittings.
With 3-5 thousand out of a joint aren't you changing about 3-4 times a year? I'd think a greasable would and should last alot longer no matter the brand.
Only if they are lubed properly. Not saying Roverhound didn't, but on various forums I see photos posted with people complaining about broken u-joints, then looking closely there's rust on the journals.
I've lost count of the times I've seen "give it a couple squirts of grease once or twice a year and you're fine"
Nothing could be further from the truth. The service interval for u-joints under
normal driving condidtions is every 5,000 miles. So I lube mine every oil change (3k miles) just so it's easier to remember. Then when I get home (or before a long drive home) after wading and being in mud.
The other myth I see a lot is "Not too much grease, you don't want to blow the seals". You can
not pump in too much grease. It's not lubed correctly unless you see new grease coming out from around all for seals on a u-joint.
Sometimes the u-joints shift in the end caps and you you can't get grease coming out one or more seals, so you have to tap the opposite yoke with a hammer to get the u-joint to shift and allow the grease to flow.
I'm sure most people here know all the above, but I feel it bears repeating.
To recap:
- When installing new, put new grease in each cap before assembly
- For normal service, lube every 5k miles or 3 months, whichever comes first
- At every lube, purge the u-joint with new grease, the point at which you see new grease coming from all 4 seals
- If you can't get new grease from one or more seals, move the propshaft side to side to shift the u-joint in the caps