Solenoid Coil Repair

Solenoid Coil Repair

Arnold has been manufacturing and repairing solenoids/coils since the 1960s.  During this time, we have built and refurbished units that have gone into many different applications, from oncology for medical equipment, to radar systems for both civilian and military platforms, to university experiments.

A typical solenoid coil repair begins by sending in your unit for evaluation (see figure 1). When a unit is received at our facility, it is tested per the specifications, which can include the following:

  1. Insulation test
  2. Magnetic field
  3. Resistance
  4. Hydrostatic test on cooling system

If the unit can be economically repaired, a repair quote is submitted. Once the order is received, the Arnold Team disassembles the unit (see figure 2).

All components that are reusable are then refurbished to new condition (see figure 3) and unusable parts are replaced.

solenoid sent for repair

Figure 1

solenoid disassembled for repair

Figure 2

solenoid reconditioned parts

Figure 3

solenoid refurbished

Figure 4

The rebuilt unit is tested again for the previously mentioned items to verify that it meets all specifications (see figure 4). The refurbished unit will carry the same one-year warranty as a new unit.

There are many factors of repairing a unit that go into the cost of the final repair. The larger factors that go into determining the typical repair price are:

  1. The number of individual coils that make up the unit
  2. What material the unit is made of – foil or wire, aluminium or copper
  3. How much reconditioning is required and possible on the components
  4. What needs to be replaced


The following is an estimate for typical repairs:

Outside DiameterLengthWeightRepair Price
10"12"250 lb$10,250
18"18"750 lb$16,500
50"48"7,000 lb$90,000

Contact Arnold’s
Ogallala Electronics Division

(800) 426 5852

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