Riddle!!!!  I can take any shape you want me to.  I am simple enough that almost anyone could build me  I can be high, low or placed almost any where & have little or no affect on the work  I can be invisible or at least you don't know where I may be  I am the one component that you can do without.  I give rest to a tired fluid List of Components Valve Fluid Hoses Pump Motor Cylinder Reservoir Filter Accumulator

I am a Reservoir

Hydraulics Reservoirs and Coolers

Objectives  1.State the functions of a reservoirs.  2.List the parts of a common reservoir.  3.List several design features that promote the functions of the reservoir.  4.Draw the schematic symbols for a reservoir.

Functions of Reservoirs  a. Hold fluid #1 purpose  b.Where fluid can cool down  c.Where air can separate from fluid  d.Contaminates can be removed or settle

Secondary Functions  a.Part of frame -- tractor  b.Ballast – side mount bush hog  c.Mounting platform -- pump, filter or other components

Trick Question zDoes everything that is hydraulic need a reservoir? Why? Or Why Not? yHydrostatic systems __ yes _X_ no __ Maybe yRam type cylinders __ yes _X_ no _ x _ Maybe

Parts of a Reservoir

Another example

Reservoir on Combine

Design features of a Reservoir  1.Off floor  2.Heavy metal plate  3.Cupped (oval) bottom  4.Inside sealed with anti- rust  5.Has glass check instead of dip stick or remove cover  6.Screen in fill hole

Design features continued…..  7.Higher flow rate larger breather needed  8.Air valve used on non vented systems  9.Baffle plate separate the incoming from out-going. Prevents turbulence, which allows foreign materials to settle, helps dissipate heat through walls  10.Lines - Pump inlet lines must be well below the fluid level, this keeps the fluid from air.

Design features continued…..  11. Lines that end near the bottom need to be cut at 45 degree.  12. Size -- Rule of thumb 2-3 gallons for each gpm tank size in gallons = pump gpm x 2 or 3 need room for expansion of fluid system demand.  Pump delivers 10 GMP what should be the reservoir size  Answer = gallons  13. Heaters below fluid level 10 watts /cubic inch  How many cubic inches in a gallon? 231  What size heater for the 20 gal reservoir is needed  231 x 20 = 4620 or a 5000 watt heater

Schematic Symbols for a Reservoir  Vented Unvented or Pressurized

Schematic Symbols for a Reservoir- 2 Return Line Above Fluid Level Return Line Below Fluid Level

Check the text for info on coolers

The end