Farr KT5500 Technical Manual page 48

KT5500 5- " T & CLInCHER® B
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14. Remove door assembly by removing the door roller shaft. Support door assembly as the roller shaft is removed. Remove the
nut from the top of the roller shaft, and use a soft alloy material (e.g. brass rod, etc.) to lightly tap the shaft down through the
support roller assembly until it comes free at the bottom. Use caution that the threads on the ends of the support roller shafts
are not damaged. Do not lose the door shoulder bushings.
15. Remove the hitch pin securing the torque gauge holder to the torque gauge mount weldment, and remove the mount.
16. Remove the four hex socket head cap screws securing the motor and the torque gauge mount weldment. Remove the torque
gauge mount weldment, then lift the motor up and away from the motor mount. Inspect the motor gear, located at the bottom of
the motor shaft, for gear clashing or tooth damage. Also, ensure that the motor gear is securely attached to the motor shaft.
17. Remove the cotter pin and clevis pin connecting the shifter handle to the shifter shaft (it is not necessary to disconnect the handle
from the pivot lug weldment).
18. Unbolt the pivot lug weldment from the top plate, and remove the pivot lug and handle assembly.
19. Remove the four hex socket head cap screws securing the motor mount to the top plate. Use care not to dislodge and lose the
two positioning dowels.
20. Remove the snap ring securing the drive gear to the top of the clutch shaft. Carefully remove the drive gear from the clutch shaft.
21. Remove the two 10-24 x 3/4" hex socket head cap screws securing the top clutch bearing retainer to the top plate.
22. Remove the top clutch bearing retainer, and bearing retainer spacer. The top clutch bearing and clutch bearing bushing may
come off with the bearing retainer.
23. Pull the top bearing cap and spacer for the pinion drive gear by removing the four 1/2" bolts which secure the bearing cap.
Thread two of the removed bolts into the extra holes on top of the bearing cap, and use them as lifting lugs to lift the bearing
cap out of place.
IF THE BEARING REMAINS ATTACHED TO THE GEAR SHAFT AFTER THE BEARING CAP IS
PULLED, MCCOY DRILLING & COMPLETIONS SERVICE PERSONNEL RECOMMENDS LEAVING IT
IN PLACE UNTIL THE TOP TONG PLATE IS REMOVED.
16. Remove the jaw pivot bolts and the jaw assemblies.
17. Ensure the bottom cage plate is supported before beginning this step. Remove the two front cage plate bolt and nut sets.
Remove the backing pin assembly and the rear cage plate bolt, and the cage plate spacers. The top and bottom cageplates may
now be removed - Note that the cam followers are fastened to the top and bottom cage plates, so use caution not to damage
them.
THE CAGE PLATE BOLTS ARE THE ONLY ITEMS FASTENING THE BOTTOM CAGE PLATE TO THE
TONG. SUPPORT THE BOTTOM CAGE PLATE FROM BELOW PRIOR TO REMOVING CAGE PLATE
BOLTS IN ORDER TO PREVENT DAMAGE TO THE BOTTOM CAGE PLATE OR PERSONAL INJURY
TO THE MECHANIC
18. Remove the top nuts and pads for the rotary idler gears.
19. Remove the remaining top roller shaft nuts. Note that the top brake band adjustment lug weldments are removed at this point.
20. Loosen, but do not remove the detent bolt on the top shifter lug weldment. Once the force from the detent ball has been removed
from the shifter shaft, the top shifter bushing can be un-threaded from the top plate. Take care not to lose the detent ball when
the bushing comes free of the shaft.
21. Remove the hex head bolts and hex flat head cap screws around the perimeter of the tong that secure the top plate.
22. With all the above steps taken, the top tong plate can be lifted off providing access to the inside of the gear case.
LIFT THE TOP PLATE STRAIGHT UP TO AVOID SNAPPING THE DOWEL PINS. A SNAPPED, BENT,
OR OTHERWISE DAMAGED DOWEL PIN CAN BE EXTREMELY DIFFICULT TO REMOVE.
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