OEM Chevrolet Astro A/C Compressor Cut-Out Switches

Chevrolet Astro A/C Compressor Cut-Out Switches Parts and Q&A

• High Pressure Cut-Off Switch
  89019183
  Q: How to Replace A/C Compressor Cut-Out Switches on Chevrolet Astro?

  A:

  The first step to replace the a/c high pressure switch demands cleaning the system of refrigerant and unmounting the engine cover. You must first clean the surroundings of the a/c high pressure switch before you extract its snap ring. A technician must disconnect the a/c high pressure switch electrical connector which exists at the rear compressor head area. The a/c high pressure switch snap ring can be taken out with the j 5403 (Snap Ring Pliers) and the a/c high pressure switch can be extracted from the compressor after snap ring removal. The j 9553-01 (O-Ring Remover) can be used to remove the a/c high pressure switch cavity's old o-ring seal and you need to inspect both the cavity and o-ring groove for foreign material while cleaning those areas as needed. Place the new o-ring in the switch cavity groove after lubricating it with 525 viscosity refrigerant oil. The procedure requires you to apply the same oil for lubrication on the control switch housing before setting the switch down into the cavity until it reaches its full depth. Install the a/c high pressure switch snap ring through the j 5403 (Snap Ring Pliers) tool by placing its highest point next to the switch housing and ensuring full insertion into the retaining groove. The system needs evacuation and recharging after which components need a leak test using the j 39400-a detector before the engine cover installation.
• Pressure Relief Valve
  88972205
  Q: What tools are required to service and repair A/C Compressor Cut-Out Switches on Chevrolet Astro?

  A:

  The service and repair of the high pressure sensor/switch necessitates three specific tools that include snap ring pliers (J 5403), o-ring remover (J 9553-01), and halogen leak detector (J 39400-A). Commence the task by taking off the engine cover while recovering refrigerant from the system. The service technician must clean the a/c high pressure switch area first before using snap ring pliers to remove the snap ring. Subsequently the technician should disconnect the electrical connector from the a/c high pressure switch positioned inside the compressor's rear head. Remove the snap ring through use of snap ring pliers (J 5403) while taking the a/c high pressure switch out. The o-ring remover (J 9553-01) will extract the old o-ring seal from the switch cavity before the cavity and o-ring groove receive inspection for dirt and foreign materials that need cleaning. Before installation place a new o-ring inside the switch cavity groove and apply 525 viscosity refrigerant oil to it. Then use the retainer ring. Apply 525 viscosity oil to the switch housing before setting it into the cavity so it reaches the bottom spot. Seat the snap ring correctly by using the snap ring pliers (J 5403). After evacuating the system the technician should recharge it before performing leak testing on the fittings through the halogen leak detector (J 39400-A) and putting back the engine cover.