Download
Share
Print this page
Komatsu D68ESS-12 Shop Manual
  1. Manuals
  2. Brands
  3. Komatsu Manuals
  4. Construction Equipment
  5. D68ESS-12
  6. Shop manual
Komatsu D68ESS-12 Shop Manual

Komatsu D68ESS-12 Shop Manual

Bulldozer
Hide thumbs

Advertisement

Quick Links

Download this manual
SEN01128-05
BULLDOZER
D68ESS
-12
D68ESS-
1001
SERIAL NUMBERS
and up
D68ESS- J10001

Advertisement

loading
Need help?

Need help?

Do you have a question about the D68ESS-12 and is the answer not in the manual?

Questions and answers

Related Manuals for Komatsu D68ESS-12

Summary of Contents for Komatsu D68ESS-12

  • Page 1 SEN01128-05 BULLDOZER D68ESS D68ESS- 1001 SERIAL NUMBERS and up D68ESS- J10001...
  • Page 2 Power train, Part 2 SEN01137-00 Power train, Part 2........................Bevel gear shaft, steering clutch and brake................Brake valve ..........................12 Scavenging pump strainer ....................... 17 Power train oil strainer ......................18 Power train oil filter ........................19 Final drive ..........................20 D68ESS-12...
  • Page 3 Engine control.......................... Machine monitor system......................Sensors ........................... 20 Standard value table Standard service value table SEN01499-01 Standard service value table ....................... Standard value table for engine ....................Standard value table for chassis....................Standard value table for electrical system ................D68ESS-12...
  • Page 4 H-15 Blade angle cylinder speed is slow or lacks power............20 H-16 Hydraulic drift of blade lift is excessive ................20 H-17 Hydraulic drift of blade tilt is excessive ................21 H-18 Hydraulic drift of blade angle is excessive ..............21 D68ESS-12...
  • Page 5 Removal and installation of track roller assembly ..............13 Disassembly and assembly of track roller assembly ............... 14 Removal and installation of carrier roller assembly ..............17 Disassembly and assembly of carrier roller assembly............. 18 Removal and installation of track shoe assembly..............20 D68ESS-12...
  • Page 6 SEN01145-01 Electrical diagrams and drawings....................Forestry specification, general construction specification Electrical circuit diagram (Serial No. 1001 – 1002, J10001 – J10010) ........Electrical circuit diagram (Serial No. 1003 and up, J10011 and up) ........Trimming dozer Electrical circuit diagram......................D68ESS-12...
  • Page 7 SEN01131-02 BULLDOZER 1SHOP MANUAL D68ESS-12 Machine model Serial number D68ESS-12 1001 and up J10001 and up 00 Index and foreword Foreword and general information Safety notice ..............................2 How to read the shop manual ......................... 7 Explanation of terms for maintenance standard ..................... 9 Handling of electric equipment and hydraulic component ................11...

  • Page 8: Safety Notice

    Proper service and repair are extremely important for safe machine operation. The service and repair techniques recommended by Komatsu and described in this manual are both effective and safe. Some of these techniques require the use of tools specially designed by Komatsu for the specific purpose.
  • Page 9 2 bolts in diagonal positions. Loosen those bolts gradually and alternately to release the pressure, and then remove the cover. When removing components, be careful not to break or damage the electrical wir- ing. Damaged wiring may cause electrical fires. D68ESS-12...

  • Page 10: Specification And Technical Data

    SEN01133-00 BULLDOZER 1SHOP MANUAL D68ESS-12 Machine model Serial number D68ESS-12 1001 and up J10001 and up 01 Specification Specification and technical data Specification and technical data........................2 Specification drawing ........................... 2 Specifications ............................4 Weight table ............................8 Table of fuel, coolant and lubricants ....................10...
  • Page 11 SEN01133-00 01 Specification Specification and technical data Specification drawing Forestry specification Angle dozer (Mechanical angle) Angle tiltdozer (Power angle) D68ESS-12...
  • Page 12 01 Specification SEN01133-00 General construction specification Angle dozer (Mechanical angle) Trimming dozer D68ESS-12...
  • Page 13 • With trimming dozer, ROPS cab (excluding antenna) — — 3,070 • With trimming dozer, cab (excluding antenna) — — 2,990 Track gauge 1,925 1,925 1,925 Length of track on ground 2,930 2,725 2,725 Width of track shoe (standard) Min. ground clearance (To bottom of undercover) D68ESS-12...
  • Page 14 Assembly type, triple Track shoe 510 mm — — grouser, on each side, pitch: 203.2 mm Power train, lubrication pump Gear type (SAL(2)–040+040) Gear type (SBR(1)-08) Max. discharge pressure: 3.0 MPa {31 kg/cm PPC pump Theoretical discharge amount: 17.3 l/min/2,164 rpm D68ESS-12...
  • Page 15 Box type (externally installed control valve) Type Hydraulic angle tiltdozer Blade support method Frame type — Max. lifting height (from ground) 1,055 Max. lowering depth (from ground) — — Max. tilt Blade width 3,275 Blade height 1,200 — — Blade cutting angle D68ESS-12...
  • Page 16 Blade cutting angle Type Trimming dozer Blade support method — — Frame type Max. lifting height (from ground) 1,655 Max. lowering depth (from ground) Front direction Degree of blade — — inclining Rear direction Blade width 3,020 Blade height D68ESS-12...
  • Page 17 Track shoe assembly (each side) — — 2,770 (triple) (510 mm, wet type) Pivot shaft (each side) Equalizer bar Hydraulic tank assembly Main control valve • Lift • Lift + tilt + angle — Engine underguard Transmission underguard Operator's seat D68ESS-12...
  • Page 18 Power train pump assembly Hydraulic pump assembly Floor frame assembly Sweep guard assembly Winch assembly (with wire) 1,520 — Angel dozer assembly 2,660 • Blade — • C-frame 1,012 Trimming dozer 2,550 — — • Trimming dozer cylinder assembly 48 x 2 D68ESS-12...
  • Page 19 For details of notes (Notes 1 and 2...) in the table, see Operation and Maintenance Manual. a Although SAE10W30DH and SAE15W40DH are specified to be used as engine oil for engine oil pan, SAE10W30 (API CH4, CI-4) and SAE15W40 (API CH4, CI-4) can be used instead respectively. D68ESS-12...
  • Page 20 Specified capacity Refill capacity Engine oil pan Damper case Idler (each of right and left) 0.22 0.22 Hydraulic oil system Power train case Final drive case (each of right and left) 28.5 Fuel tank — Cooling system (including sub-tank) — D68ESS-12...
  • Page 21 SEN01133-00 D68ESS-12 Bulldozer Form No. SEN01133-00 © 2006 KOMATSU All Rights Reserved Printed in Japan 06-06 (01)
  • Page 22 SEN01135-00 BULLDOZER 1SHOP MANUAL D68ESS-12 Machine model Serial number D68ESS-12 1001 and up J10001 and up 10 Structure, function and maintenance standard Engine and cooling system Engine and cooling system ..........................2 Radiator, power train, oil cooler......................2 Engine control ............................4...
  • Page 23 The power train oil cooler is built into the lower tank. Power train oil cooler Radiator (built into the lower tank) Core type PTO-LS Fin pitch (mm) — Heat dissipation capacity (kcal/h) 88,500 25,900 46.19 1.829 Heat dissipation area (m D68ESS-12...
  • Page 24 Power train oil cooler inlet port Fan guard Power train oil cooler outlet port Inlet hose Reservoir tank Outlet hose Lower tank (with built-in power train oil cooler) Coolant filler cap Drain plug 10. Power train oil cooler 11. Boss 12. Cushion D68ESS-12...

  • Page 25: Engine Control

    10 Structure, function and maintenance standard Engine control Decelerator pedal Outline Throttle lever The engine speed is controlled by throttle lever Clutch (2) or decelerator pedal (1). Cable Fuel injection pump Lever positions [1] Low idle [2] High idle D68ESS-12...
  • Page 26 Download the full PDF manual instantly. Our customer service e-mail: aservicemanualpdf@yahoo.com...