Instruction for the Parker Denison Hydraulic T6C, T6D, T6E, T7E vane pump:
ROTATION & PORTS INDICATION：The rotation and ports orientation are viewed from the shaft end.
CW stands for clockwise, right-hand rotation. CCW stands for counter-clockwise, left-hand rotation.
Check that the assembly of the power unit is correct : The distance between the suction pipe & the return lines in the tank should be at its maximum. A bevel on both suction & return lines is recommended to increase the surface and so lower the velocity. We suggest a 45° minimum angle.
Velocities : inlet 0,5 < x < 1,9 m/s (1,64 < x < 6,23 ft per sec.) : return x < 6 m/s (x < 19,7 ft per sec.) : Always insure that all return and suction lines are under the oil level to avoid forming aeration or vortex effect. This should be done under the most critical situation (all cylinders extended for example). Straight and short pipes are the best.
Start-up : The tank has been filled up with a clean fluid in proper conditions. Flushing the system with an external pump prior to the start-up is good. To allow a good priming of the pump, the air should be bled off.
START-UP INSTRUCTIONS & RECOMMENDATIONS
The first valve on the circuit should be open to tank. Air bleed off valves are available on the market place. It is possible to bleed off the air by creating a leak in the P port of the pump.
SHAFT & COUPLING DATA
DENISON Hydraulics supplies the T6 series keyed shaft pumps with high strength heat-treated keys. Therefore, when installing or replacing these pumps, the heattreated keys must be used in order to ensure maximum life in the application. If the key is replaced, it must be a heat-treated key between 27 and 34 R.C. hardness. The corners of the keys must be chamfered by 0,76 mm to 1,02 mm (0.03 to 0.04) at 45° to clear the radii in the key way. The alignment of keyed shafts must be within tolerances given for splined shafts here above.
Petroleum based antiwear R & O fluids. These fluids are the recommended fluids for pumps & motors. Maximum catalog ratings and performance data are based on operation with these fluids. These fluids are covered by DENISON Hydraulics HF-0 and HF-2 specifications.
ACCEPTABLE ALTERNATE FLUIDS:
The use of fluids other than petroleum based antiwear R & O fluids requires that the maximum ratings of the umps will be reduced. In some cases the minimum replenishment pressures must be increased. Consult specific sections for more details
VISCOSITY (for Indutrial)
Max. (cold start, low speed & pressure) 860 cSt - 3900 SUS
Max. (full speed & pressure) 108 cSt - 500 SUS
Optimum (max. life) 30 cSt - 140 SUS
VISCOSITY INDEX: 90 min. Higher values extend the range of operating temperatures.
TEMPERATURES: The usual limitating factor of temperature (low or high) comes from the obtained viscosity.
The seals are sometimes the limit : standard seals range from -30° C to 90° C (-9.4° F to 194° F).
WATER CONTAMINATION IN THE FLUID
Maximum acceptable content of water :
0,10 % for mineral base fluids.
0,05 % for synthetic fluids, crankcase oils, biodegradable fluids.
If the amount of water is higher, then it should be drained off the circuit.