GEOLOGICAL BORING L.L.C.

6" Backreamer Assembly instructions

Protector Tube Assy: Steps 1-5

Expansion Ring Assy: Steps 6-10


Protector Tube reference part list:
Backreamer Core (D302)
Protector Tube (D310)
Snap Ring (Truarc #5100-400)
O-Ring (2-240)
O-Ring (2-157)
Fluid Nozzles (varies)
     


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STEP 1: Clean all parts before proceeding with assembly.


STEP 2: Place smaller O-ring (2-240) into groove “A” and larger O-ring (2-157) into “groove “B” [Fig 1].


STEP 3: Install Protector Tube. Notches on Tube line up with Carbides on Back Reamer [Fig 3].


STEP 4: Lock Protector Tube into place by installing the Snap Ring into groove “C” [Fig 2]. After positioning Snap Ring with snap ring pliers, tap Snap Ring with a hammer and screwdriver until it locks into the groove [Fig 4].


STEP 5: Install Fluid Nozzles, 6 places [Fig 3].
The Protector Tube is now completely installed.

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Click here for steps 6 thru 10, 6" EXPANSION RING ASSY

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Copyright 1999 Geological Boring L.L.C.  All rights reserved. Revised: April 8, 1999