Build Hydraulic Tanks

• [1] Cut 1/4"x6"x12" tube for hydraulic tank
• [2] Cut 1/4"x6"x12" end closures
• Secure 3 bungs - 3/4" for filler/breather, 1" for return line filter, and 2" for suction strainer (extender plus bung proper)
• Torch out 3 bung holes as in last step
• Grind tank edges and bung edges clean wherever bead will be welded. This is a critical step that helps eliminate pinholes after welding.
• Clean edges and bungs
• Ream bungs as necessary for cleaning and fit
• Lay out on welding table
• Close off bungs with fittings to prevent spatter from destroying threads
• Tack everything
• Weld
• Assemble tank
• Test hydraulic tank with air pressure and soap solution
  • Plug 3/4" and 1" bungs for air tightness
  • Screw in suction strainer and reducers down to air hose fitting
  • Connect air hose
  • Fill air into suction strainer opening.
• Grind and weld any pinholes, retest, iterate if needed
• Assemble return line filter assembly, with thread tape as needed, and screw into side bung of the hydraulic tank.
• Screw in suction strainer assembly, use thread tape as needed, and reduce suction strainer down to 3/4" NPT hose barb
• Cut section of 3/4" suction hose
• Screw in filler/breather cap into top bung.
• Take off return line filter assembly and filler breather, plug holes, and cover suction hose barb - in preparation for welding to frame.