Heavy duty transmission jack

[Frank S]

Coments like that make one feel good, till the jack comes up missing. Lol. Looks great, bett there are many more applications than transmissions.
Eric

Fortunately where I live our sheriff knows just about everything that goes on He stops by some mornings for coffee and to see what new fangled thing I have come up with.
As far as other uses the jack will be put to lots of uses 1 being that of a lift the wife's riding mower I plan to make a set up to hook under the front or rear to lift it for servicing the blades and such
Another use will be as an elevating work table
Once I finish working on the Mack I have a rear end to change out on a Masda pickup the jack is so strong it can be used to lift the pickup several feet off the ground then I'll put my jack stands under it and use the jack to remove the rear end. Also have to put a clutch in a pickup so it will get used as much as I was hoping to just have another piece of shop art to roll around out of the way.

[suther51]

Having faced the same riding mower ground hugging issue I put a hand crank winch with a pullie at the roof-line of our wood-shed to hoist up the front of the lawn tractor, can put er right back on er haunches. Saves so much time n trouble.
Eric

[Frank S]

Eric I normally use my jib crane with the chine hoist but cannot always get it near the crane so the jack will serve as a good substitute

[suther51]

As the fellow who taught me some blacksmithing said. If it works, it's right.
Eric

[Toolmaker51]

It helps to have a lot of heavy duty large wood blocks
Attachment 24439
I have more if needed LOL
Attachment 24440

No such thing as excess cribbing.
Riggers working in our shop today realized that very thing. At least one hadn't been stored dry; and then inspected before use.

[Frank S]

I try to take the same care of my cribbing as I do my gun powder.
When I'm not using the cribbing blocks they are stacked out of the way out of the dun and when ever possible out of the rain large stacks of it stays banded up in a pallet sized cube. Any of it that starts to split or crush due to age and use gets cut up into fire wood My driver is forever dropping off more so I don't have to wory about running out anytime soon.

[Manitoba Man]

Many years ago when I regularly worked on heavy equipment and trucks I owned a heavy duty transmission jack the other day a friend called me to ask if I could put a clutch and rear main seal in his Mack. I told him sure why not. So he said he would be passing through in a couple of weeks after I hung up the phone I remembered that I don't have a jack any more. No problem I'll Hire my neighbor who lives about a mile away to bring his over. Big problem his is busted he needs to have it repaired. I offered to rebuild the ram for him but he had already taken it to a shop where they have ordered the parts not sure when they will be in or when he will get his jack back. So I decided to just build one.
After looking around I pulled a couple of 4x4 1/4" sq tubes out of my usable scrap pile dug out 4 heavy duty casters 2 rigid and 2 swivel from my storage van then found an 8 ton engine hoist jack. Hauled a piece of 1/2" plate steel out of my scrap pile and 8 lengths of 1" pipe that at one time was a sprinkler system A few feet of 3/4" 1018 cold roll rod for the pivots shafts and a lenght of 1/14" chromed cylinder rod for the pivots and a few set collars that I made up previously and I was all set I had a heavy duty transmission jack the only thing left to do was cut drill and weld all of this together
Attachment 24157

Attachment 24158

Attachment 24159

Attachment 24160
After welding the 1 " pipes together to make the link arms I needed a weld jig to make sure the ends were parallel and matching lengths
so I already had 1 hole in the 1" thick table I used my mag drill to drill another turning the table into a welding fixture or jig
Attachment 24163
I mig welded the ends on by welding about an inch inside of the pipes filling with weld
Attachment 24165
After all the ends were welded on the link arms and cooled I reamed the bores using my #7 tap handle on the tang of the MT#3 shank of a 3/4"
Attachment 24166
Pre-assembled everything before welding
Attachment 24167
Just tacked together
Attachment 24168
Now a fully functional transmission jack
Attachment 24169
I used KBS rust blast to remove the surface rust and provide a pre paint primer surface
Attachment 24170
KBS rust blast leaves a zinc coating that can either be brushed off or left in place Since I was out of etching primer I opted to just rub off and loose residue and leave the rest to serve as a primer
Attachment 24171
Painted with KBS rust seal machinery gray
Attachment 24172

Another Classic by Frank. Excellent.

[Frank S]

Another Classic by Frank. Excellent.

Since building that transmission jack 6 years ago I have used it to pull 4 or 5 transmissions and have rented it to my mechanic neighbor several times ``Every time he uses his he says something happens to the hyd jack in it. I have replaced the ram on mine once but the one I used to build the jack in the first place was old when I mounted it.