340B Loader Seals

[jgp12000]

Last weekend my 10 year old grandson got a 9 pointer,we use the loader to skin deer.His other grandpa came to see the deer.He is a retired forklift mechanic & informed me my loader seals are leaking.He told me if I get the parts he will assist me in the repair.Has anyone done this before,I just want an idea of the process?He told me you have to rest the bucket on something
& remove the rods,seems like removing the bucket would be easier, but I have never done it?

 

[shaun wallace]

If bucket cyls, just roll bucket down and set on ground. If boom cyl set bucket on drum or another tractor rear tire.

 

[jgp12000]

Thank you, now where is best place to get the seals & all the parts I need,I will be looking, but I am a rookie on this repair

 

[Andy Wickiser]

Thank you, now where is best place to get the seals & all the parts I need,I will be looking, but I am a rookie on this repair

Look up part number at Messicks (link given) or mycnhstore.com then, if you choose not to buy OEM because of price, search Web or Ebay for "New Holland" then part number. For example part number for bucket seal kit is 251369. Also if you want to go local your hydraulic repair shop or industrial seal house may be able to match.

New Holland 340B - 3 CYL UTILITY TRACTOR(06/85 - 11/88) Parts Diagrams

New Holland Parts Catalog Lookup. Buy New Holland Parts Online & Save!

messicks.com

 

[jgp12000]

Thanks guys,I do have a burn barrel to sit the bucket on, it appears only the boom seals are leaking.He told me you take the rods out to replace the seals,I am assuming some type of spanner wrench of some sort to remove the rods?

 

[stevieb49829]

A picture of the rod end of the cylinder and we can advise you better. If it is just an external leak, and the loader works well, you might only be changing out the gland seals (that's the part at the end of the cylinder that seals against the rod). If the loader is not working properly, then you go deeper, remove the rod and piston, inspect the bore, and replace the piston seals. However, depending on if the gland can be removed over the outboard end of the rod, will make the determination to remove the rod and piston. steve

 

[jgp12000]

I always thought it was the hose fittings leaking until he pointed it out it was the seals .Fluid just runs down on the hoses,loader works fine,I have to add fluid sometimes, but it always works.

 

[Andy Wickiser]

Thanks guys,I do have a burn barrel to sit the bucket on, it appears only the boom seals are leaking.He told me you take the rods out to replace the seals,I am assuming some type of spanner wrench of some sort to remove the rods?

The ones with the locking wire probably use a C-spanner as pictured below but this is from my manual for a 455D. You can improvise with some other tool if desired.

 

[jgp12000]

Also, I am missing a hood bolt,size? (The photos will not rotate in the edit, should be counterclockwise ?)

 

[Ultradog MN]

Last weekend my 10 year old grandson got a 9 pointer,we use the loader to skin deer.His other grandpa came to see the deer.He is a retired forklift mechanic & informed me my loader seals are leaking.He told me if I get the parts he will assist me in the repair.Has anyone done this before,I just want an idea of the process?He told me you have to rest the bucket on something
& remove the rods,seems like removing the bucket would be easier, but I have never done it?

I'm looking at that same task - couple of seals on my loader are leaking. Have not ventured into that area before.
I will likely wait for a warm day this winter, pull the cylinders off and do them inside.
Will check CNH for prices on new seals but suspect I'll find them cheaper from one of the big hydraulic outfits that are not far from me. I'm usually particular about the country of origin on that kinda stuff too.
We'll see.
Does a guy automatically replace the internal seals too?
Lastly, As Shaun suggests, resting the bucket on a another tire or a couple blocks of wood should be high enough.

 

[Andy Wickiser]

Also, I am missing a hood bolt,size? (The photos will not rotate in the edit, should be counterclockwise ?)

Your endcap looks quite a bit different than the later style which I have. Maybe someone else will chime in on disassembly procedure.

 

[shaun wallace]

On hood 1/4-20x 1 G5 with 3/16 flat and lock washer and nut. Remove hose and turn gland counter clockwise and wire will feed out as turned . Good hyd shop can/have kits in stock or size out. I use H&D distributors out of Dallas TX. Hercules , Baun Iron and many others can supply.