How Repair a Saw-Cut Loop Yoke
These easy to follow instructions will give you the best chances of success
when resealing a saw-cut loop yoke.

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Do you have a loop that is reading under 30 megohms? This reseal technique may repair a shorting loop if the short is happening at the yoke point (area where the loop meets the lead-in) which is often a vulnerable point for loops.

Step 1:

Carefully cut through the sealant along the sides of the yoke area using a box cutter. Do not cut the area that the loop enters and exits the yoke.
Hammering a screwdriver along the sides of the cut can help to separate the sealant from the pavement. Be sure not to puncture loop wire.


Step 2: Use pliers and a screw driver to pull up the old sealant. Be careful when inserting the screwdriver, make sure it is not pressing into the loop.

 

 

 

Step 3:
Remove as much of the sealant as possible from the yoke area.

 

 

 

Step 4:

Insert a thin screwdriver in between the loop wires and gently spread the wires slightly apart. This will allow space for the sealant to flow between the wires. Use an air blower or
can of air to remove loose debris before you fill with sealant. Wipe rubbing alcohol around the joint and then blowing it out/dry will ensure a clean surface for the new sealant to stick to.

Step 5:
With the screwdriver still inserted apply a layer of sealant under the yoke, gently press the yoke into the sealant.

Do not use a water based sealant, use a rubber or polyurethane sealant. Water based sealants will facilitate shorts to ground.

 

Examples of Polyurethane Sealants Examples of Rubber-Based Sealants

BD Loop Goop
Chemque Q-SEAL™ 290S
Bondo® 575 Loop Sealant BASF Gold Label Loop Sealant
Sikaflex®-1a
Or compatible products

Ruscoe Permanent Sealer 974 Loop Sealant
3M Detector Loop Sealant 5000
Or compatible products

Step 6:
With the screwdriver still inserted seal over the yoke. Encapsulate the yoke in sealant.

 

 

 

Step 7:
Remove the screwdriver, this will allow the sealant to flow between the loop wires.

These steps will only help repair a loop that is failing at the yoke point (the area where the loop meets the lead-in). Fully sealing this area will prevent water from entering the yoke point and causing a short to ground or intermittent loop failures. If your loop has been damaged at a different point, this repair will not fix the loop.

Brian Dickson is the General Manager of BD Loops, a designer of preformed direct burial and saw-cut inductance loops for the gate, door, and parking industries. Brian holds certification as a CAGOI and is an IDEA Sanctioned trainer. With over 13 years in business the quality of BD Loops is unparalleled. BD Loops products are available through over 300 distributors in the U.S. and Canada. BD Loops offers 46 standard preformed loop sizes, all standard and custom loop sizes are ready to be shipped the same day. The company has several letters of recommendation testifying their professionalism and design, and is a member of the following associations: AFA, IDA, NOMMA, IPI, CODA, NAFCA, and IMSA. If you would like to speak to Brian Dickson please call BD Loops at 714-890-1604.