WEDGELOCK TNH BT Series Installation Manual Download Page 1

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Parts & Service 01/12/2016

902-001-13 Rev 3

Page 1

SPECIAL NOTE

Your new Wedgelock TNH Thumb may have been manufactured to supplied specifications for a target carrier

machine. Installation on any machine other than the target carrier may not be possible and will void warranty.

TNH Thumb

Installation Manual

SERIES

72 Montgomery Crescent

Upper Hutt 5018, New Zealand

ph: +64 4 526 3901

www.wedgelock.com

Summary of Contents for TNH BT Series

Page 1: ...been manufactured to supplied specifications for a target carrier machine Installation on any machine other than the target carrier may not be possible and will void warranty TNH Thumb Installation Ma...

Page 2: ...XTEND CYLINDER ROD 8 STEP 4 PIN CYLINDER TO THUMB BODY 8 STEP 5 ATTACH BRACKETS TO CYLINDER 9 STEP 6 INSTALL THUMB MAIN PIN 9 STEP 7 TURN THUMB OVER 12 STEP 8 TACK WELD BRACKETS TO ARM 13 STEP 9 INSTA...

Page 3: ...n a secure workshop environment with safe lifting devices and specialist tools Occasionally however this is not possible and these instructions contain suggestions and tips on how to carry out an inst...

Page 4: ...NDER HYDRAULIC CONNECTIONS THUMB PIN STOP BRACKET THUMB STORAGE LUGS THUMB STORAGE LUGS TOOTH BAR THUMB PIN CONFIGURATION CYLINDER ROD BOLTED END CAP THUMB MAIN PIN PIN RETAINER PIN RETAINER PIN RETAI...

Page 5: ...igh pressure oils use cardboard or similar as a backing when checking for leaks Oil spills are sometimes unavoidable Contain all fluid spills with appropriate absorbent materials and dispose according...

Page 6: ...lifting techniques and lifting equipment when maneuvering heavy objects Attachments may roll or tip during removal when placed on the ground place with extreme caution Always use assistance when insta...

Page 7: ...5 Page 18 STEP 1 POSITION CARRIER MACHINE Ensure that the Thumb is in line with the centre of the dipper arm Position the thumb with teeth nearest the cab and lined up roughly with the boom pin Ensur...

Page 8: ...er rotation interferences For most weight classes 10mm is enough but the larger sizes require a greater distance Refer to the table on Page 17 for the correct distance STEP 4 PIN CYLINDER TO THUMB BOD...

Page 9: ...5 ATTACH BRACKETS TO CYLINDER Pin the cylinder bracket to the base end of the cylinder Hang the stop bracket on the thumb storage lugs using shackles provided STEP 6 INSTALL THUMB MAIN PIN THUMB COUP...

Page 10: ...with the thumb pin holes Measure equal distances from the coupler ear plates and the thumb Centre the thumb Select spacers from the ones supplied to fill the gaps Make sure you use a 3mm shim under th...

Page 11: ...Rev 3 Page 11 SECTION 3 Thumb Installation If there is no gap when the end cap is bolted on tight turn the end cap around ENSURE THERE IS A GAP BETWEEN THE END CAP AND THE THUMB SIDE PLATE THUMB PIN...

Page 12: ...l DO NOT contact arm with thumb bracket or damage may occur Wrap a 2 Tonne strop or tie down around the arm and the thumb Tighten the strop to pull the thumb bracket into contact with the arm Lift the...

Page 13: ...eld ends of cylinder bracket to the dipper arm 50mm in four places Tack weld the stop bracket in place X BEFORE WELDING DISCONNECT THE GROUND TERMINAL FROM THE MACHINE S BATTERY FOLLOW ANY OTHER INSTR...

Page 14: ...ence If the thumb over rotates remove the cylinder bracket from the dipper arm and increase the extended rod distance to 20mm 3 4 Tack weld the cylinder bracket to the dipper arm and repeat STEP 10 If...

Page 15: ...Installation STEP 11 COMPLETE THE WELDING PROCESS Remove the bucket AGAIN BEFORE WELDING DISCONNECT THE GROUND TERMINAL FROM THE MACHINE S BATTERY Remove cylinder from cylinder bracket Position arm co...

Page 16: ...etainer bar with the lower portion of the coupler ear plate Make sure the retainer bar will not contact the thumb side plate and then tack the pin to the coupler NOTE Large chamfer end of pin to coupl...

Page 17: ...eck all pin retainers bolts nuts for tightness on the bucket and thumb Include pin end cap bolts Lubricate all greasing points Check hydraulic hoses and fittings for any leaks or wear replace immediat...

Page 18: ...EFORE WELDING Find a suitable location for the grease port Protected Accessible Does not interfere with any attachments during full rotation Note location shown in pictures is an example only STEP 1 D...

Page 19: ...excessive pressure on the back of the thumb back blading The thumb is designed to receive stress in one direction only and excessive stress on the back of the thumb will cause damage and possible fai...