Jinma 254 - Hydraulic Washer Question

[ljplum12]

I pulled the trigger on a used 254, so here I go.

First issue I'm tackling is a leaky washer on one of the banjo bolts on the diverter. They were a bit cracked and one of them would leak pretty bad under pressure.

Heard good things about Affordable Tractor around here so I ordered from them.

I ordered the 20mm rubber coated hydraulic washers (I'd share a link but I'm still too new).

Here's the product I got:


I went ahead and put them on:


They leak like crazy now, as soon as I even try to start the tractor. I hit up Tommy at Affordable and he said they're crush washers and I probably didn't have them tight enough. I tightened them as much I felt comfortable (I'm by no means a small guy) to the point where I was afraid I might break the mounting bracket. They still leak a lot.

Any suggestions? Is this the wrong product or do I just need to eat more wheaties?

 

[Bob Rooks]

For a low grade 20 mm bolt the recommended torque is 166-188 ft. lbs. Since it's a banjo bolt, and probably low grade, I'd cut that torque in half to 83 ft. lbs. Do you have a torque wrench?

 

[bjr]

Been down that road last year on a Jinma loader valve. Here's what I did. Special ordered off of ebay some soft copper 20 mm or the closest imperial washers and then ordered some Permatex Part no. 54540 pneumatic/hydraulic thread sealant. cleaned fittings and made sure no oil seeping out from valve or hoses. I assembled and used the sealant on the bolt threads and let set overnite and did not have any leaks. I live in a industrial agriculture area and could not find those rubber lined crush washer and could not find copper washer large enough. So Good ol' ebay came thru. Just get some soft copper washers and you should be fine barring any unseen valve port cracks or banjo fitting cracks. Apparently banjo fittings are not the fitting of choice in USA. I've even contemplated just "Americanizing" (running a NPT tap the nearest size down the hole and switching over to pipe thread). But the soft copper washer saved the day. bjr

 

[Bob Rooks]

Banjo fittings are alive and well in the US. They are used extensively on motorcycles, including Harleys, and on my Ford (IH) 6.4 Powerstroke diesel. They are also used on GM vehicles as well. Just sayin'.

 

[coolreinfarm]

I had a similar problem with a leaking hose from the diverter valve to the return line, no one in my area has banjo fittings, I called Ronald at Ranch Hand Supply, sent pictures and he has the fittings to eliminate the banjo and convert to standard jic fitting. Good guy to work with.