Lit. No. 28270, Rev. 00
July 1, 2005
17
Use the following procedure to
install hydraulic hoses.
1. Screw flare nut onto fitting flare
and hand tighten.
2. Align hose so there are no twists
or sharp bends.
3. Using two wrenches, hold the
hose in position and tighten flare
nut 1/8 to 1/4 turn beyond hand
tight. Final torque on the flare nut
should be approximately 20 ft-lb.
SYSTEM OVERVIEW – HYDRAULIC
HYDRAULIC FITTING AND
HOSE INSTALLATION
NOTE: Overtightening JIC hose
fitting ends will result in a
fractured fitting.
Do not use any type of sealant or
tape on the fittings or hoses. This
could damage product. Always use
two wrenches to ensure proper
tightening of fittings and hoses.
Use the following procedure to
install SAE O-ring fittings in valve
block and rams.
1. Turn jam nut on fitting as far back
as possible.
2. Lubricate O-ring with clean
hydraulic fluid.
3. Screw fitting into port by hand
until the washer contacts port
face and shoulder of the jam nut
threads.
4. Unscrew fitting to proper position
no more than one full turn.
5. Using two wrenches, hold fitting
body in position and tighten jam
nut until the washer again
contacts port face, then tighten
an additional 1/8 to 1/4 turn to
lock fitting in place. Final torque
on the jam nut should be
approximately 20 ft-lb.