Fair Value:

[OFF]

That 4 cylinder is a little light on power for an 80F, even if it was in good condition. I've seen them with a 300 cu in industrial (6 cyl) and even they laboured at times.

Speaking on labouring, when you want a JLG to warm up, leave it on ground control. That's what warms the oil.

 

[1693TA]

Yes, it usually gets about five minutes or a bit longer to warm before it moves. I keep it inside and first start this engine, then start the truck to allow air to build, follow up with the skid steer, then finally start the tractor if it's in the normal place so everything warms a bit before being placed into service. The 100' length of my building is getting too short.....

 

[colson04]

A 5.9 Cummins would make a nice powerplant in your 80F.

The 4 cylinder Ford does well in mine, until I want to load onto my trailer. Then it struggles to pull itself up the ramps.

 

[1693TA]

By the book this thing originally had a 300 Ford six cylinder and the former owner replaced with a four cylinder Ford engine which I believe is very tired. There is a rebuilt by "Universal Remanufacturing" tag affixed to the block, but I don't know the date(s) any work was performed. The prior owner is deceased so no way to backtrack for any information. The family is uncooperative to work with. Regardless, she's a "pooch" in most operations concerning travel, but the functions all work well. I've not tried to climb up onto a trailer again as when I picked it up the engine stalled about 1/2 way up the ramp from being off level. I had to bridle it up with the winch, disconnect the hubs, and winch it onto the bed. Up till it stalled, I think it would have loaded itself as the drive tires were about 1/2 up the ramp when the engine quit and it wasn't lacking power. I need to rebuild the carburetor is the reason it stalled from flooding:






The Cummins engine is in a 1989, or 1990 Dodge pickup and not intercooled, so not a lot of plumbing to attach. It however has a Chrysler automatic transmission behind so I need to find an SAE #3 flywheel housing and I'd be set. Welding, and adaption isn't a large hill to climb for fitment.

With the warmer weather in the future, plans are to reengage with several of my projects as I'm looking to exit with the implement dealer to focus more on personal life and interest(s).

 

[OFF]

A diesel engine is the best thing that could ever happen to any gasoline powered manlift/AWP. (IMHO) Those old Cummins 5.9's were rock solid. We had one go 26,000 hrs without ever touching the short block. A couple head gaskets, a couple turbos, one injection pump. Still running when we sold it.

Another advantage to a diesel engine manlift is using one tank of fuel per week, instead of 1 tank per day.

 

[1693TA]

Decided to ascertain why the emergency hydraulic pump motor wouldn't run. After removal from the machine and having to use a torch on the rear bearing support/cover, kinda thinking the problem may be revealed:

Rear bearing frozen to armature shaft, and commutator segments:



Front housing and frozen roller support bearing:



Housing interior. Everything was very crusty and I had to pry the armature from the pole shoes and brushes were firmly anchored in their holders:



Another of the commutator:



Strange but after freeing the brushes in their holders, and cleaning up the commutator with silicone carbide paper, everything checks out electrically. I'm going to bead blast everything clean tomorrow and see if I can get a new bearing locally. I suspect it will run as there are no open segments, nor poles, and the rear bearing cleaned up nicely fitting well on the shaft.

A replacement motor is readily available should it not work but I don't want to spend a hundred if not needed.

 

[OFF]

You think there was water dripping onto it/into it from somewhere? Pretty nasty.

 

[1693TA]

You think there was water dripping onto it/into it from somewhere? Pretty nasty.

It has always been an outside unit and the side covers are present. Hard to say just years of condensation but I cannot see how water would have been directly dripping onto it. I had to use heat to remove the rear cover, and pry the assembly out of the body it was rusted so badly.

 

[OFF]

It has always been an outside unit and the side covers are present. Hard to say just years of condensation but I cannot see how water would have been directly dripping onto it. I had to use heat to remove the rear cover, and pry the assembly out of the body it was rusted so badly.

I keep forgetting how old these machines are now. It's not 1980 anymore

 

[1693TA]

It's not 1980 anymore

In many ways that is a good thing too.....

 

[colson04]

Holy smokes. I'm glad mine was functional when I got it. I have had to use it twice. Once, I forgot to check my fuel level before starting my day, and ran out while booming up. The second time, my fuel line cracked and proceeded to dump my tank while I was working at height. Both times the auxiliary pump worked flawlessly to get me down.

 

[1693TA]

This one has never worked in my tenure. However the machine is short from being placed into service and I don't want to get stuck up high either. My wife is going to be operating it and I really could do without listening to her if stuck up in the air although I would consider fully extending the boom and running it all the way up as she is deathly afraid of heights. Kind of a common motor on lift gates, and forklift masts I've ascertained through research and easy to obtain replacement if needed.

 

[1693TA]

For single bearings: $18.99 at O'reilly auto parts for tomorrow pickup in store, $38.99 at Advance Auto parts in stock, and $6.12 a pair from ebay with a three day turnaround. Not a hard decision given the lift is serviceable now if needed with nothing pressing.

 

[1693TA]

I was able to break free/loosen the front bearing, but it doesn't roll very easily. I'm going to pry one of the shields out, pack some grease into the cavity, reassemble, and give the motor a bench test to prove it's worth working with further. No need to reinstall into the machine till the new bearing arrives but I can get a jump on the time if a replacement motor is needed. It takes all of five minutes to reassemble everything.

 

[1693TA]

Pretty rough old girl and probably not one to start my cottage industry of bearing recycling with.....

Starting to peel the shield:




Shield removed:



Kinda crusty in there:



I can force it to rotate but after seeing this I really don't want to chance galling the shaft so will await the replacement bearing before moving along.

 

[1693TA]

Forgot to include these just after removing the end bell and before I started prying the armature from the poles which were bridged with rust:







A thing of beauty no?

All parts have cleaned up acceptably well with glass beads and silicone carbide paper so when the bearing comes in, (shipped today) it should go right back together and work fine. I do not have a pole shoe screw remover so didn't remove them but was able to clean right up to their perimeter with the blast gun after insulating the windings with "Gorilla" tape to keep the blast from removing the electrical insulating varnish.

So far I have about an hour and a half into this project. Should wrap up with just over 2-1/4 manhours and save myself a few hundred in parts and labor costs.

 

[1693TA]

Installed a new end bearing and put everything back together. Works alright now reinstalled onto the machine but sure is slow in dropping the basket as it doesn't move a lot of oil.

Test run of the motor here:

 

[OFF]

I'd say it's been a while since that motor ran. Good Job on the resto. That bearing was really something special.

 

[kshansen]

I think if I was planning on using that lift I would after getting the pump motor working make it a habit of operating it for a short time say once a week. Nothing worse for a emergency system to sit unused for months at a time. You know it will fail to work the first time you actually need it!

 

[1693TA]

I think if I was planning on using that lift I would after getting the pump motor working make it a habit of operating it for a short time say once a week. Nothing worse for a emergency system to sit unused for months at a time. You know it will fail to work the first time you actually need it!

Good advice and I plan to follow with it. Just a push of a button for a few seconds from the ground station so an easy prestart check for sure.