Case 721E - Hydraulic Fitting Torque and Installation

INTRODUCTION
Torque-Standardtorquedataforhydraulics
Installationofadjustablettingsinstraight
threadO-ringbosses
1.LubricatetheO-ringbycoatingitwithalightoilor
petroleum.InstalltheO-ringinthegrooveadjacent
tothemetalbackupwasherwhichisassembledatthe
extremeendofthegroove(4).
2.InstallthettingintotheSAEstraightthreadbossuntil
themetalbackupwashercontactsthefaceoftheboss
(5).
NOTE:Donotovertightenanddistortthemetal
backupwasher.
3.Positionthettingbyturningout(counterclockwise)
uptoamaximumofoneturn.Holdingthepadofthe
ttingwithawrench,tightenthelocknutandwasher
againstthefaceoftheboss(6).
230856591
Standardtorquedataforhydraulictubesandttings
Tubenutsfor37°aredttingsO-ringbossplugs
adjustabletting
locknuts,swivelJIC-
37°seats
SizeTubingOD
Thread
size
TorqueTorque
4
6.4mm(1/4in)7/16-2012-16N·m(9-12lbft)8-14N·m(6-10lbft)
5
7.9mm(5/16in)1/2-2016-20N·m(12-15lbft)14-20N·m(10-15lbft)
6
9.5mm(3/8in)9/16-1829-33N·m(21-24lbft)20-27N·m(15-20lbft)
8
12.7mm(1/2in)3/4-1647-54N·m(35-40lbft)34-41N·m(25-30lbft)
10
15.9mm(5/8in)7/8-1472-79N·m(53-58lbft)47-54N·m(35-40lbft)
12
19.1mm(3/4in)1-1/16-12104-111N·m(77-82lbft)81-95N·m(60-70lbft)
14
22.2mm(7/8in)1-3/16-12122-136N·m(90-100lbft)95-109N·m(70-80lbft)
16
25.4mm(1in)1-5/16-12149-163N·m(110-120lbft)108-122N·m(80-90lbft)
20
31.8mm(1-1/4in)1-5/8-12190-204N·m(140-150lbft)129-158N·m(95-115lbft)
24
38.1mm(1-1/2in)1-7/8-12217-237N·m(160-175lbft)163-190N·m(120-140lbft)
32
50.8mm(2in)2-1/2-12305-325N·m(225-240lbft)339-407N·m(250-300lbft)
Thesetorquesarenotrecommendedfortubesof12.7mm(1/2in)ODandlargerwithwallthicknessof0.889mm
(0.035in)orless.Thetorqueisspeciedfor0.889mm(0.035in)walltubesoneachapplicationindividually.
Beforeinstallingandtorquing37°aredttings,cleanthefaceoftheareandthreadswithacleansolventorLoctite
cleanerandapplyhydraulicsealant
LOCTITE®569™tothe37°areandthethreads.
Installttingandtorquetospeciedtorque,loosenttingandretorquetospecications.
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