Was using the grapple today & went to swap the bucket on & my buddy had already unhooked the 3rd function lines at the graple before I could close the lids. Now I can't get one of the hydro lines to reconnect b/c of the pressure. Is the best way to alleviate that to loosen the fittings on the grapple hoses & drain some hydraulic oil and let the lids close a little so the pressure is off?
Grapple hydro line from 3rd function valve
- Thread starter coolbrze
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cglaser104
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- Massey Ferguson GC1710, Cub Cadet 2206
Couple different ways. 1) using a RUBBER mallet, hit the connector to relieve pressure 2) have someone apply pressure on the grapple lid to alleviate pressure or 3) if your ready to get messy, loosen the fitting
LouNY
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With the grapple on the tractor curl it down and under should be able to find a position that is actually unloaded for the hoses.
There are tools out there that are designed to make hooking up quick connects that are under pressure possible. I use the XBoom QC, but there are more out there.
If the grapple is stuck in mid-stroke you might be able to lift it with the loader to relieve the pressure, push the coupler pin in, and then lower it. Hydraulic fluid will make a mess, so be ready. You could probably use a bottle jack as well.
If the grapple is stuck in mid-stroke you might be able to lift it with the loader to relieve the pressure, push the coupler pin in, and then lower it. Hydraulic fluid will make a mess, so be ready. You could probably use a bottle jack as well.
Appreciate it everyone!
npalen
Elite Member
I'm a little confused as to how, with the grapple lids open, a mallet tap would release the pressure. I would have thought that quite a bit of fluid would have to be released to led the lids close fully and let the pressure off.
Glad it worked for you but what am I missing/
Glad it worked for you but what am I missing/
cglaser104
Platinum Member
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- Lockport, NY
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- Massey Ferguson GC1710, Cub Cadet 2206
Your not alleviating fluid your relieving residual pressure that wasn't properly released before disconnect. This also happens when you leave an implement disconnected in the sun and it builds pressure due to heat. In theory, If you have weeping cylinders it would eventually cure itself.
npalen
Elite Member
Okay, I see. I was thinking that the weight of the grapple lids trying to retract the cylinders would be too much pressure for coupling. The grapple lid cylinders were apparently fully extended and being held under pressure buildup.
Grapple lids didn't have to close at all, just needed to let out enough hydro fluid so pressure wouldn't be so high & the ball would retract a tad when trying to re-hook up to the 3rd function hoses. I only tapped the ball a half dozen times but that was enough...