Recent content by JD 1140

Hi All. I replaced both the cast couplers and the middle rubber cushion and it has fixed the problem of loud knocking. Definitely recommend changing all the parts not just the rubber drive. Mine where very worn and would have chewed the rubber part up again.

Fixed knocking noise in Hydraulics, replaced couplers between motor and pump, rubber cushion was in very bad condition and replaced both the metal couplers also very worn.

Thanks, no oil visable oil slushing around, slight amount of mist but it’s splitting hairs. Just waiting on the new hyd pump couplers to arrive, SPAREX is currently offline in Australia. Can I disconnect pump drive from motor drive shaft to see if noise disappears??? Or is it not good to run...

Thanks, I had checked that but not sure if I had 3 pl up or not

Next Hint, lowering or raising 3pl make engine slightly labour and I can hear a slight hissing sound in trans under seat like a leak or valve?

Another Clue for those who understand hydraulics more then me is the Loud knocking Noise only happens when there is No load on pump, when activating steering or lifting 3pl no noise , soon as 3pl is at bottom or top it starts knocking immediately.

Thanks Jim, I will check free play in drive shaft , I do have the full workshop manual so probably a good place to start is to read that. Cheer Ben

Hi Everyone, Recently purchased Jd 1140 Hydraulic are working fine But seems to have a knocking sound from pump when 3pl is full down. Also shaft between motor and pump moves back n forth while spinning ( Cant post a video) Unknown history on tractor but the hydraulic screen, filter and oil...