Hydraulic fitting torque settings

[Paul in the woods]

This is probably a daft question but does anyone tighten their hydraulic fittings to a required torque or just 'tight enough'?

 

I ask because I cannot get any details from the makers of the walking excavator I bought. I obviously don't want to spill oil about the place but I don't wish to damage the fittings.

 

The fittings are steel coloured, with an approx 30° face, and probably M14 size (OD of the male thread is about 14mm). Female connector at the end of a hose and male on the cylinders.

 

Can anyone suggest a sensible torque setting?

[Breezeblock]

never used a torque wrench on them always used the guesstimation rule

[agrimog]

if your tightening a taper face seal, run the nut up till the faces meet , then finger tight, then half to one flat more with a spanner, any more and you risk damaging the sealing faces, this applies to bsp, jic, metric, japanese metric and komatso tapered. orfs, sae3000 and sae 6000, seal on the o ring and are a different story

[roseyweb]

Just a tweek with the spanner is my usual

[treequip]

Most hydraulic fittings are on pipes which kind of precludes the use of torque measuring, most of which is done on socketed implements

 

The idea of trying it in some of the restricted places the are home to pipe work fills me with dread

[Paul in the woods]

Most hydraulic fittings are on pipes which kind of precludes the use of torque measuring, most of which is done on socketed implements

 

Crows foot socket on a torque wrench but I understand your point.

 

I guessed hardly anyone would torque them but not having used hydraulic fittings when I googled tightening I came up with loads of comments about torquing them.

 

I'll tighten them as suggested, finger tight and then a nip with a spanner. Thanks everyone.

[fastrac]

if your tightening a taper face seal, run the nut up till the faces meet , then finger tight, then half to one flat more with a spanner, any more and you risk damaging the sealing faces, this applies to bsp, jic, metric, japanese metric and komatso tapered. orfs, sae3000 and sae 6000, seal on the o ring and are a different story

 

as said in this reply then just check none have backed off after a few hours use

[agrimog]

cheers on that one fastrac, sort of becomes second nature after changing hoses, and a good set of open ring crowfoot spanners is a must for serious work

[CallumA]

finger tight and nip up with a spanner and if it leaks nip it up a bit more!!