Transmitter Installation and
Indexing Instructions

STEP 1: Lubricate the forward A.I.P. threads and make-up the boring head. Torque the sonde housing/boring head connection to the appropriate connection preload to insure no movement or rotation when drilling.

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Fig. 1 - Transmitter

STEP 2: Lay housing on its side in horizontal position. Slide the transmitter into the sonde housing [Fig. 1]. DO NOT DROP transmitter into housing from vertical position.

STEP 3: Using a large screwdriver, rotate the transmitter until the forward slot on the transmitter engages the index pin on the front retainer [Fig. 2]. NOTE: The transmitter should move forward about 1/8” when properly engaged.

STEP 4: With the screwdriver, rotate or index the transmitter until the 12 o’clock position corresponds with 12 o’clock position of the boring head. NOTE: The boring head steering flat should be down in the 6 o’clock position.

STEP 5: Push down on the transmitter with the screwdriver to check that the spring loaded forward retainer allows the transmitter to travel forward about 1/2”. NOTE: You may have to wiggle the screwdriver back and forth slightly to enable the transmitter to travel with the spring loaded forward retainer.

STEP 6: Verify 12 o’clock position with the signal receiver.

STEP 7: Lubricate the rear retainer o-rings with oil or a light grease [Fig 3.].

STEP 8: Install the rear retainer [Fig. 3]. Rotate the rear retainer while pushing it with light pressure towards the transmitter. You must push the retainer and transmitter forward about .25" in order to engage the threads. This is necessary to compress the spring loaded indexing mechanism. NOTE: You may have to wiggle the rear retainer back and forth slightly to enable the transmitter to travel with the spring loaded forward retainer.

STEP 9: Recheck the 12 o’clock position.

STEP 10: Torque the sonde housing onto the drill pipe using the appropriate torque for the connection being used. To minimize connection failure always make-up the connection to the appropriate torque values.

INSPECTION REQUIREMENT TO ENSURE PROPER TRANSMITTER CLEARANCE: If the transmitter becomes difficult to remove or it appears that the slot epoxy is protruding into the transmitter chamber, use an emery cloth flap grinder to remove any protruding epoxy and clean the bore to ensure that the transmitter easily slides in and out [Fig. 4]. Use compressed air to blow out the epoxy dust and residue after cleaning.

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Fig. 2 - Screwdriver/Transmitter

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Fig. 3 - Retainer

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Fig. 4 - Flap grinder/Drill motor

NOTE: If no flap grinder is available, please call Geological Boring at 253-863-5746 to order the flap grinder. The unit comes with an extension mandrel and can easily be used with a hand drill.

That is all...



Copyright 1999 Geological Boring L.L.C.  All rights reserved. Revised: Mayl 11, 1999