ASV RC50 - Bucket Cradle + Cylinder Pins and Bushes.

 PHASE TWO - Replace pins and bushes.

This is the bucket cradle - all the bushes worn out and pins shot.

We machined new bushes to suit - bored them to size and welded into place.

Bushes welded into place and then reamed to suit the new pins.

Pins slide into new bushes, all ready for assembly.

Like Hannibal says " I love it when a plan comes together."

Now we start on the worn out bucket cylinder rams.

Both side are worn beyond repair.

And so we have a plan.

for the rod ends we will fabricate new bushes and weld them onto the rods 

after removing the old ones.

Easy said!  Of course.!!

4 x round bar ready to be machined on the lathe.

Ready to be welded onto the rod ends.

Next we execute the old rod bushes - leaving the rod only.

We prep the steel for a low hydrogen weld and coat the rod with anti-splatter.

The executed rod end and the cylinder ends.

A patient weld - and the rod end bush is mated to the rod.

Next is the cylinder ends on the bucket cylinders.

Here the plan was to machine the worn-out hole larger and press fit a new bush into place.

Worked like a dream.

New bush - New pin.

For the load arm cradle cylinder ends we had a challange.

They wee so worn that there was not enough meat to machine a bore for a new bush.

So after execuing the cylinder ends we came up with this plan.

Two eyes were machined on either end of a lenght of flat bar.

These were then machined off and welded to the cylinders.

The machined eye - ready to be welded to the cylinder.

Job done! Eye welded into place.

Only thing left is to hone the cylinders before assembly + fit new seals.

All assembled and back on the machine.

Ready for the next few years of hard work.

Top-end of the bucket cylinders.

Bucket cradle all assembled and in place.

ASV RC50 - Pins and Bushes on the Cradle Arms.

 RC 50 ASV Skid Steer Loader has a very worn set of pins and bushes.

This week starts off with removing the cradle and replacing all the pins and bushes.

Here is a clip of the free play between the pins cradle bushes.

Check the slop in these bushes.

The RC50 has had the bucket arms and cylinders removed - 

Ready to remove the loader cradle.

And off come the cradle - now we inspect the damage.

Many years of hard work and abuse and this pin is worn-out.

Chech the wear in the bush - more than egg shaped.

The hydraulic ram is not much better - here the eye has retired.

We start removing the old bushes by grinding away all the welding with the trusty 9"

A little more tricky this one - Not at all , just a mild challenge.

Notice the internal webbing, welded to the bush!

How do we tackle this?

Now the web is free from the bush!

Next we drive out the old bush -

Ready to accept the new Terex bush.

This is the genuine bushes supplied by the manufacturer.

Slid into place and ready for the weld.

Great fit Buddy!

And so the welding begins, the fun part.

We have folded a flat bar around the front of the arm and welded it up

in a bid to strengthen and support the bushes.

Worked like a dream.

Cradle bushes welded into place.

End Side of the cradle, capped off to strengthen the arm.

This is what the job looked like after assembly.

The top view of the bucket bushes and the shiny part is the new perches made for the cylinders.

Read bbout this watr of the job in the next post.

Takeuchi Track Drive Motor Replacement.

 Takeuchi TR03 excavator now only tracks in a circle.

No track drive on the left hand side.

No visible oil leaking from the track drive motor.

a quick connect of the pressure gauge and all is confirmed - Track Drive motor Down.

Right at the end of this post are two interesting video's detailing Final Drives and Motors.

And so we begin on our adventure.

Check the oil!

You saw right Buddy - not a drop after ten minutes.

After taking off the track and removing the final drive motor we get it into the shed.

Extract the final drive cover by patiently fishing out the lock wire through a tiny hole 

drilled in the cover.

Cover off - not looking good!

The first set of planetary gears are badly worn - very sharp edges - 

seems a bearing has collapsed as well.

Second set of planetary gears - not looking good here either.

There is a muddy , greasy , paste all over , it's not grease and smells of hydraulic oil.

A picture paint a 1000 words.

Not only has the final drive seal failed - letting out all the good transmission oil -

The pump drive motor has also failed bleeding or leaking into the final drive.

With all the work in the mud - the final drive seal allowed free entrance to all the finer contaminants..

And so we have our special mixture of outstanding grinding paste.

Self destruct darling.

Out of curiosity we stripped the drive down to examine the damage.

Notice how the splines have worn away and the condition of the drive gear.

Better shot of the drive axle and gear.

Only one solution here - replace old boy!

 

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