September 2016
Part No. 1272856
GTH-1256
3-27
Section 3 • Repair Procedures
HYDRAULIC PUMPS
How to Install the Boom and
Steering Function Pump
WARNING
Bodily injury hazard. This
procedure requires speci
fi
c
repair skills, lifting equipment
and a suitable workshop.
Attempting this procedure
without these skills and tools
could result in death or serious
injury and signi
fi
cant component
damage. Dealer service is
strongly recommended.
Note: When removing a hose assembly or
fi
tting,
the
fi
tting and/or hose end must be torqued to
speci
fi
cation during installation. Refer to Section 2,
Hydraulic Hose and Fitting Torque Specifi cations
.
Note: Perform this procedure with the engine off
and cool to the touch.
1 Install the boom function pump on the
transmission pump.
2 Install the high pressure hose onto the pump
outlet.
WARNING
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
3 Install the low pressure hose onto the pump
outlet. Install the hose retaining rings and
fasteners.
4 At the case drain at the top of the pump,
fi
ll the
pump with hydraulic
fl
uid until it reaches the top
of the case drain
fi
tting.
5 Install the case drain hose onto the pump.
6 Securely install the wire harness onto the
pump.
7 Open the hydraulic tank ball valve.
8 Check the hydraulic
fl
uid level in the hydraulic
tank. Add
fl
uid if needed.
9 Start the engine and prime the pump. See 6-1,
How to Prime the Boom and Steering Function
Pump
.
10 Inspect for leaks.
11 Adjust the pump pressure. See 6-1,
How to test
the Boom and Steering Function Pump
.
