Product Manual

de- vice.
Construction Accessories, Inc. • 3880 Haines Rd. • Waynesville, OH 45068-9610 • Phone: [phone] • fax: [phone]
E-mail: [e-mail] • www.jackjaw.com
Stake
Extractors
That Work!
Operating Instructions JJ0313/513 August 5, 2015
JackJaw
®
Stake Tester Operating Instructions
Now that your JJ0313 or JJ0513 is assembled you are ready to test some stakes.
1. Go to the proposed site for the tent, and drive four to eight test stakes into the job site.
Drive stakes all the way down, as you would intend to use them to hold down your tent.
2. Record the location of the test stakes on your site plan.
3. Turn the electronic display of the JJ0313/JJ0513 “on” and make sure that the load is zero.
4. Set the base of the JJ0513 close to the stake and make sure that the shaft of the puller is
pointing the same direction as that of the test stake.
5. Grab on to the test stake with the Jaws of the JJ0513. Using a steady, slowly increasing
pressure on the lever arm, push the handle down slowly while watching the display.
6. Record the highest value that you see. Double the reading from the scale and write this
number on the stake on your test plan.
7. Repeat this procedure for each test stake.
8. Change your staking plan for the proposed job as needed to insure that you have enough
holding power for each stake line.
NOTE: The force that is shown on the SCALE readout is only half of the force that the
stake is holding into the ground. You must double the scale readings to get the actual
holding force of the stake.
The EDJr-1T Digital Scale, used on the Model JJ0313 and JJ0513 is designed to read up to 2500
lbs. This will allow you to get stake readings of up to 2200 lbs accurately.
Operating Tip: Since the tent ropes or straps for your tent apply a force to the stakes at an angle
of 30-45 degrees off vertical, the real holding power of the stakes should be significantly (15-
20%) higher than the force required to pull the stakes straight out of the ground.