CONTENTS______________________ 5 Decals Decal Location - JT920 ....................................... 8 Engine Components Air Filter System ............................................... 32 Air Filter System - Caterpillar Diesel ...................... 34 Alternator .......................................................... 26 Engine - Caterpillar Diesel ..................................... 18 Engine - Lister-Petter Diesel ................................. 14 Engine Installation - Caterpillar Diesel ................... 20 Engine Service - Caterpillar Diesel ........................ 22 Fuel Filter System - Caterpillar Diesel ...................
24 Radiator ............................................................ 28 Radiator - Caterpillar Diesel .................................. 30 Throttle ............................................................ 36 Throttle - Caterpillar Diesel .................................... 38 Frame Components Carriage ........................................................... 52 Carriage - Begins / Ends ........................................ 56 Covers - Caterpillar Diesel ..................................... 68 Covers/Guards ................................................ 66 Cylinder Grease ...............................................
76 Drill Frame Components ................................ 42 Fuel Reservoir .................................................. 64 Gear Box - Rotation Drive ..................................... 60 Idler ................................................................. 72 Stabilizer - Rear ............................................... 70 Tension Spring - Track ..................................... 74 Track Group - Rubber ...................................... 62 Wrench - Front .................................................. 46 Wrench - Front - Begins ....................................... 50 Wrench - Front - Ends .........................................
48 Operator’s Station Console Gauges .............................................. 84 Operators Station Gauges ............................... 82 Seat Mount ...................................................... 80 Hydraulics Anchor Control - Ends ...................................... 150 Anchor Driver Hydraulics ............................... 162 Anchor Hydraulics .......................................... 154 Anchor System ............................................... 158 Anchoring Hydraulics .................................... 152 Anchoring Hydraulics H.D system ................. 160 Auxiliary Backup wrench Hydraulic ................
144 Breakout Hydraulics - Begins .......................... 142 Breakout Hydraulics - Ends ............................ 140 Carriage Rotation Hydraulics ........................ 128 Carriage Thrust Hydraulics ........................... 134 Control Valve/Levers - 3-spool ........................ 126 Control Valves & Levers................................. 120 Cylinder (2” x 1”) ............................................... 166 Cylinder (3” x 1.5”) ............................................. 168 Drive Control Supply Hydraulics..................... 102 Drive Control Valve & Levers ......................... 106 Flow Divider - Ends ..........................................
116 Frame Tilt Hydraulics .................................... 108 Ground Drive Hydraulics ............................... 104 Hydraulic Control Valve .................................. 124 Hydraulic Control Valve - 2-spool ..................... 118 Hydraulic Control Valve - Ends ....................... 122 Hydraulic Diagram............................................ 90 Hydraulic Diagram - Auto-Bore .......................... 92 Hydraulic Motor - Tapered Keyed Shaft 1-1/4” ......... 164 Hydraulic Reservoir ......................................... 94 Hydraulic Schematic - w/Auto-Bore Shutoff ........... 88 Main Supply Hydraulics .................................
114 Mud Motor Hydraulics ................................... 146 Oil Cooler Hydraulics ...................................... 96 Oil Cooler Hydraulics - Caterpillar Diesel ............ 100 Rotation Hydraulics ....................................... 130 Rotation Hydraulics - Auto-Bore ....................... 132 Stabilizer Hydraulics ...................................... 110 Thrust Hydraulics .......................................... 136 Thrust Hydraulics - Auto-Bore .......................... 138 Track Extended Hydraulics ........................... 112 Electrical Electrical Diagram - Bore Console. .................... 194 Electrical Diagram - Engine/Frame. ...................
188 Electrical Diagram - Gauge . ............................. 196 Electrical Diagram - Gauge - Auto-Bore ............. 198 Electrical Diagram - Relay .............................. 192 Electrical Schematic ...................................... 172 Electrical Schematic - Auto-Bore ..................... 182 Electrical Schematic - JT920T2 ........................ 178 Electrical Strike Mat - Early Models .................. 202 Electrical Strike System ............................... 200 Electrical Strike System - Ends ...................... 204 Relay Panel ................................................... 206 Relay Panel - Caterpillar Diesel ...........................
208 Lubricator Systems Thread Lubricator ........................................... 212 Continued ID0135083