VMC - 50-Taper - Gearbox - Vent Solenoid - Reconfiguration

Applies to machines built from: 
January, 1989

VMC - 50-Taper - Gearbox - Vent Solenoid - Reconfiguration - Introduction

This procedure tells you how to reconfigure the vent solenoid on the gearbox sump tank.

Reconfigure the vent solenoid [1] as shown [2]. This prevents oil leaks from the input hose into the coil of the vent solenoid .

note: The solenoid on your machine may look different from the vent solenoid in these illustrations. The installation and operation of the vent solenoid is the same.

Prerequisites

Parts Required:

FITG NPT 1/8NPT 1/8M ORIFICE .031 STR( P/N 58-0303) QTY:1 FITG NPT 1/8NPT 1/8M ORIFICE .010 STR( P/N 58-4081) QTY:1
NIPPLE 1/8NPT X 1 HEX BRASS (P/N 58-16732) QTY:1    

Machine Compatibility

Do this procedure on vertical mills that have a gearbox and a 50-taper spindle.

VMC - 50-Taper - Gearbox - Vent Solenoid - Reconfiguration

Step 1

Push POWER OFF.

Set the main circuit breaker to the OFF position. Lock the main circuit breaker. Use an approved lock with an approved safety tag.

Turn the main air valve to the OFF position. This shuts off the air supply to the machine.

Step 2

Disconnect these parts:

  • return hose [1] and fitting
  • 1/4" oil transfer tube and fitting [5] from the 1/8 NPT x 1/8 NPT brass tee fitting [6]. Do not remove the 90 degree 1/4" push-to-fit fitting [2] from the solenoid [3].
  • 1/8 NPT x 1/8 NPT brass tee fitting [6] from the lid
  • 1/4" oil supply tube and push-to-connect fitting [4]
  • solenoid [3]
  • extension nipple [8]. You may discard this part.
  • 1/8 NPT x 1/8 NPT brass tee fitting [7]

Step 3

Install these parts to the lid:

  • 1/8 F NPT 0.31 orifice fitting [7]
  • 1/8 NPT x 1/8 NPT brass tee fitting [2]. Align it so that the return hose [1] will drape over the side of the tank.

Turn the 90 degree 1/4" push-to-fit fitting [10] on the solenoid [9] until the fitting points up.

Install these parts onto the solenoid [9]:

  • 1/8 NPT X 1 HEX nipple [8]
  • 1/8 NPT x 1/8 NPT brass tee fitting [6]
  • 1/8 F NPT 0.10 orifice fitting [5]
  • 1/4" push-to-connect fitting [4]

Install the completed solenoid assembly onto the 1/8 F NPT 0.31 orifice fitting [7].

Connect the 1/4" oil transfer tube and fitting [3] to the 1/8 NPT x 1/8 NPT brass tee fitting [2].

Connect the return hose [1] and fitting to the 1/8 NPT x 1/8 NPT brass tee fitting [2].

Connect the 1/4" oil supply tube [11] to the 1/4" push-to-connect fitting [4].

Connect the solenoid wire to the spindle connection panel.

Turn the main air valve to the ON position.

Power on the machine.

Run a program to turn the spindle at a low speed. Check for leaking oil.

If there is an oil leak, it is a sign of a contaminated orifice. Check the fittings for contamination.

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.

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