Info about floor jack model number.

[trooper1954]

Hi all,
I have an older model Torin Rapid lift floor jack thats in need of a rebuild kit, but there is no model # or serial# anywhere to be seen. Just wondering if anyone can help me with this? Obviously I need the number in order to buy the correct kit. Also, in the photo included of all the screw heads and rubber plug under the cover could someone tell me what each is for, and which is the actual hydraulic fluid fill hole?
Thanks for any help.

 

[paulsomlo]

The fill port is the rubber plug. The "do not adjust" is probably the overload, the others are the working valves I suppose - I've never had a rapid pump jack.

You may or may not find a seal kit for that; best bet is to start with Hydraulic Parts Supply at
(620) 594-2247. You may have to do some disassembly and measuring.

 

[trooper1954]

thanks paulsomlo...the oil is spewing out of the larger screw next to the "do not adjust' screw. As I inherited this jack I'm assuming someone put oil in the wrong spot? I'll completely drain all and start from scratch. Perhaps I wont need to rebuild the whole thing after all.

 

[paulsomlo]

Does it lift and hold a load? If it's working normally, other than spewing oil, remove the larger screw and see if there is an oring or seal that's been compromised.

 

[trooper1954]

Hi paulsomlo...it was lifting a certain amount but then would not hold. I have removed the large screw next to the "Do not adjust" screw and found the o ring to look okay. I also removed both the other screws and they both have o rings that look okay. While these screws were out I turned the jack over to drain it in case it had been incorrectly filled. When I did that two ball bearings and a spring fell out.....and of course I have no idea where they came from!!! Do you have any ideas??
Also, when both screws were out and i pumped the handle oil came out of both holes....is that normal?
I've emailed Titan but of course no response!

 

[paulsomlo]

While these screws were out I turned the jack over to drain it in case it had been incorrectly filled. When I did that two ball bearings and a spring fell out.....and of course I have no idea where they came from!!! Do you have any ideas??
Also, when both screws were out and i pumped the handle oil came out of both holes....is that normal?
I've emailed Titan but of course no response!

That's a common theme - be glad that you still have the ball bearings and that they didn't escape.

Don't expect much from the manufacturer - many of those import jacks don't have seal kits available; they're considered a "throw away". And thus, the mfg doesn't publish any drawings. But the seals are usually generic, and can be gotten.

You're pretty much at the point of no return, so you may as well break down the hydraulic unit. If it's not holding a load, the most common failure would be the main ram cup.

Here's a post in the "Overseas jack Rebuild" thread where someone tears into a double pumper: https://www.garagejournal.com/forum/threads/overseas-jack-rebuild-help-tutorial.51105/post-7888174. Take a look, as well as the posts before and after.

 

[trooper1954]

Thanks paulsomlo,
I'm not that comfortable breaking down the whole unit...I'd prefer if someone could just tell me how and in what order I can get the ball bearings and tapered spring back in? The larger hole in the photo is the only possible place they could have come from, and looking into that hole it appears tapered so I'm assuming the small ball bearing goes in first then the narrow end of the spring, then the large ball bearing on top of the larger end of the spring and then the threaded cap? Then I could refill with oil, bleed the air and see if works or still leakes?

 

[paulsomlo]

Thanks paulsomlo,
I'm not that comfortable breaking down the whole unit...I'd prefer if someone could just tell me how and in what order I can get the ball bearings and tapered spring back in? The larger hole in the photo is the only possible place they could have come from, and looking into that hole it appears tapered so I'm assuming the small ball bearing goes in first then the narrow end of the spring, then the large ball bearing on top of the larger end of the spring and then the threaded cap? Then I could refill with oil, bleed the air and see if works or still leakes?

The spring either goes between the two balls, or on top of the larger one. Easy enough to try either.

 

[trooper1954]

Just to update...I dropped the small ball bearing in first, then the narrow end of the spring followed by the larger ball bearing. As I was about to replace the threaded cap I decided to inspect the washer with a magnifying glass and low and behold, there was a tiny chunk missing out of one side. It was a flat washer and I didn't have any so I replaced it with a round washer that I had. Put the threaded cap back on, and filled the unit with fresh hydraulic jack oil. I was amazed that it took almost a whole container, however once filled I operated the jack to full height with weight on it and left it for an hour. There was no change in height when I returned. I'm assuming that the leak was a result of the washer being damaged and that it now appears the jack is working properly. My only question remaining would be ...is the jack supposed to drop a little with each handle pump before it lifts up for the next stroke? Mine is doing this....if something is not right could you maybe tell me what I need to do?
Thanks.
BTW.... I did bleed the air out as I was filling with fresh oil.

 

[paulsomlo]

It sounds like you're getting some "handle feedback" - it may be that the top ball is lifting off the seat on the pump intake stroke. Looking at your picture again, I see the plug has a "nib" on the end of it, possibly to retain the spring - I don't know why they would include that feature, otherwise. Try moving the spring up, between the plug and the large ball, see if there's room for it. And you may need to reverse the spring as well - whichever end fits the nib on the end of the plug.