Lit. No. 44224, Rev. 14 104 August 15, 2011
MAINTENANCE
2. Carefully note hose routings and positions
of any protective hose wraps for proper
reassembly.
3. Loosen hoses or fi ttings slowly to relieve any
residual pressure.
4. To remove a hose, loosen and unscrew the
hose fl are nut from the fi tting.
5. To remove a fi tting, loosen the jam nut and
unscrew the fi tting from the port.
Procedure for Installing Hydraulic
Fittings and Hoses
NOTE: Overtorquing JIC hose fi tting ends will
result in a fractured fi tting.
DO NOT use any type of sealant or tape on the
fi ttings or hoses. This could damage product.
Always use two wrenches to ensure proper
tightening of fi ttings and hoses.
Use the following procedure to install SAE
O-ring fi ttings in valve block and rams:
1. Turn the jam nut on the fi tting as far back as
possible.
2. Lubricate the O-ring with clean hydraulic fl uid.
3. Screw the fi tting into the port by hand until the
washer contacts the port face and shoulder of
the jam nut threads.
4. Unscrew the fi tting to the proper position no
more than one full turn.
5. Using two wrenches, hold the fi tting body
in position and tighten the jam nut until the
washer again contacts the port face, then
tighten an additional 1/8–1/4 turn to lock the
fi tting in place. Final torque on the jam nut
should be approximately 20 ft-lb.
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