Woodward Gateshaft 

  Gateshaft Types: How Can I Tell the Difference?

Distinguishing Gateshaft Types

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There are a number of characteristics that need to be determined to select the
correct parts…

  • Type of Ballhead (40001, Motor Drive, Belt Drive)
  • Left or Right Handed
  • Direct or Reverse
  • 1 Piece Speeder Rod / 2 Piece Speeder Rod
  • Dashpot Style – Old or New

 

Type of Ballhead (40001, Motor Drive, Belt Drive):
40001 Head
40001
Motor Drive
Motor Drive
Belt Drive
Belt Drive

 

Left or Right Handed:
Facing the front of the governor (Gate Limit knob in front of you), put one hand on the Dashpot and one hand on the Gate Limit
without crossing your arms. The hand on the Gate Limit knob is the type of governor that you have.
Left Handed
Left Handed
Right Handed
Right Handed

 

Direct or Reverse:
With the pilot valve plunger as the center line:- If the floating lever connecting rod is on the Dashpot side of the governor, the governor is REVERSE.- If the floating lever connecting rod is on the side away from the Dashpot, the governor is DIRECT.
Reverse
Reverse
Direct
Direct

 

1 Piece Speeder Rod / 2 Piece Speeder Rod:
This can be determined be examining the gate limiting interface.The presence of a L-Shaped limit sleeve indicates a 1 piece speeder rod.
1 Piece
1 Piece (Has Limit Sleeve)
2 Piece
2 Piece (No Limit Sleeve)

 

Dashpot Style – Old or New:
A quick visual inspection can reveal the type of dashpot. The newer dashpots have bushings
that need to be changed along with a pair of link bearings. The old style dashpot has a sight glass that may need the washers changed.
New Stlye Dashpot
New Style Dashpot
Old Stlye Dashpot
Old Style Dashpot
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