New Holland E20.2SR, E22.2SR, E27.2SR Hydraulic Excavator Workshop Manual 60413401

Description

• Model List:
  • E20.2SR Hydraulic Excavator
  • E22.2SR Hydraulic Excavator
  • E27.2SR Hydraulic Excavator

• 1. SAFETY PRECAUTIONS
• 1.1. GENERAL SAFETY INFORMATION
• 1.2. SAFETY PRECAUTIONS
• 2. OUTLINE
• 2.1. GENERAL PRECAUTIONS FOR REPAIRS
• 2.2. INTERNATIONAL UNIT CONVERSION SYSTEM (Based on MARKS STANDARD HANDBOOK FOR MECHANICAL ENGINEERS)
• 3. SPECIFICATIONS
• 3.1. COMPONENTS NAME
• 3.2. MACHINE DIMENSIONS
• 3.3. SPECIFICATIONS AND PERFORMANCE
• 3.4. MACHINE COMPONENTS WEIGHT (DRY)
• 3.5. TRANSPORTATION
• 3.6. TYPE OF CRAWLER SHOES
• 3.7. TYPE OF BUCKET
• 3.8. ENGINE SPECIFICATIONS
• 4. ATTACHMENT DIMENSIONS
• 4.1. BOOM
• 4.2. Fig. 31 Boom Dimensional Drawings
• 4.3. Table 31
• 4.4. Fig. 32 Clearance of pin and bushing on boom section
• 4.5. Table 32
• 4.6. Table 33
• 4.7. Fig. 33 Clearance in thrust direction on boom section
• 4.8. Table 34
• 4.9. Table 35
• 4.10. Fig. 34 Dipper dimensional drawings
• 4.11. Table 36
• 4.12. Fig. 35 Clearance of pin and bushing on dipper section
• 4.13. Table 37
• 4.14. Table 38
• 4.15. Fig. 36 Clearance in thrust direction on dipper section
• 4.16. Table 39
• 4.17. Table 310
• 4.18. Fig. 37 Bucket dimensional drawings
• 4.19. Table 311
• 4.20. Fig. 38 Dimension of lug section
• 4.21. Table 312
• 4.22. Fig. 310 Dozer dimensional drawings
• 4.23. Table 314
• 4.24. Fig. 315 Dozer maintenance standards
• 4.25. Table 315
• 4.26. Table 317
• 4.27. Table 318
• 4.28. Fig. 312 Swing bracket dimensional drawings
• 4.29. Table 319
• 4.30. Fig. 313 Clearance of pin and bushing on swing portion
• 4.31. Table 320
• 4.32. Fig. 314 Clearance in thrust direction on swing portion
• 4.33. Table 321
• 5. TOOLS
• 5.1. TORQUE SPECIFICATIONS FOR CAPSCREWS NUTS
• 5.2. SCREW AND TOOL SIZES
• 5.3. TORQUE SPECIFICATIONS FOR JOINTS AND HOSES
• 5.4. TORQUE SPECIFICATIONS FOR SLEEVE TYPE TUBE FITTINGS
• 5.5. SPECIAL SPANNERS FOR TUBES
• 5.6. APPLICATION OF SCREW LOCKING AND SEALING COMPOUNDS
• 5.7. COUNTERWEIGHT LIFTING JIG
• 5.8. Fig. 111 Counterweight lifting jig
• 6. STANDARD MAINTENANCE TIME TABLE
• 6.1. PREFACE
• 6.2. STANDARD WORKING TIME TABLE FOR THE MAINTENANCE OF EXCAVATOR
• 7. MAINTENANCE STANDARDS AND TEST PROCEDURES
• 7.1. HOW TO USE MAINTENANCE STANDARDS AND PRECAUTIONS
• 7.2. PERFORMANCE INSPECTION STANDARD TABLE
• 7.3. MEASURING ENGINE SPEED
• 7.4. Fig. 131 Engine Speed measurement (The above figure shows concept)
• 7.5. WATER TEMP
• 7.6. Fig. 132 Accelerator wire adjustment
• 7.7. Fig. 133 Main hydraulic oil pressure measurement
• 7.8. Fig. 134 Main hydraulic oil pressure measurement
• 7.9. Fig. 135 Relief valve
• 7.10. Fig. 136 Relief valve (Slewing motor)
• 7.11. Fig. 137 Pilot oil pressure measurement
• 7.12. Fig. 138 Relief valve
• 8. HYDRAULIC SYSTEM
• 8.1. SUMMARY
• 8.2. HYDRAULIC CIRCUITS AND COMPONENT MODELS
• 8.3. HYDRAULIC CIRCUIT OPERATION
• 8.4. SCHEMATIC PIPING FOR HYDRAULIC SYSTEM
• 9. ELECTRICAL SYSTEM
• 9.1. HOW TO READ CIRCUIT DIAGRAM AND HARNESS CONNECTION
• 9.2. ELECTRICAL EQUIPMENT HARNESS
• 9.3. Fig. 231 Upper Frame Portion (1/6)
• 9.4. Fig. 232 Upper Frame Portion (2/6)
• 9.5. Fig. 233 Upper Frame Portion (3/6)
• 9.6. Fig. 234 Upper Frame Portion (4/6)
• 9.7. Fig. 235 Upper Frame Portion (5/6)
• 9.8. Fig. 236 Upper Frame Portion (6/6)
• 9.9. Fig. 237 Engine Portion (1/3)
• 9.10. Fig. 238 Engine Portion (2/3)
• 9.11. Fig. 239 Engine Portion (3/3)
• 9.12. Fig. 2311 Relay Unit Portion (2/2)
• 9.13. Fig. 2312 Fuel Tank Portion (1/2)
• 9.14. Fig. 2313 Fuel Tank Portion (2/2)
• 9.15. Fig. 2313 Socket and Hour meter Assembly
• 9.16. Fig. 2314 Cab Portion (OPT) (1/2)
• 10. COMPONENTS SYSTEM
• 11. HYDRAULIC COMPONENTS
• 11.1. HYDRAULIC PUMP
• 11.2. SPECIFICATIONS
• 11.3. Operation
• 11.4. Swash plate (Hanger)
• 11.5. Rotary group
• 11.6. Control spring
• 11.7. Cover
• 11.8. Gear pump
• 11.9. Housing
• 11.10. Trochoid pump
• 11.11. Specifications
• 11.12. Performance Characteristics
• 11.13. Dumping mechanism
• 11.14. Component Parts The control valve is roughly classified into the following four sections.
• 11.15. Pilot operating section
• 11.16. Manual operation section
• 11.17. Flow conflux function
• 11.18. Independent travel function
• 11.19. Function of Lock Valve
• 11.20. Operation of relief valve
• 11.21. Parking brake
• 11.22. The hydraulic timer is provided to protect the parking brake from dragging and plays to secure delay time so that the parking…
• 11.23. Operating principle of relief valve
• 11.24. Makeup valve (check valve, No.54)
• 11.25. Reduction Unit (2stage planetary)
• 11.26. Hydraulic circuit
• 11.27. Arm cylinder
• 11.28. Bucket cylinder
• 11.29. Swing cylinder
• 11.30. Dozer cylinder
• 11.31. Function of each Parts
• 12. ELECTRICAL EQUIPMENT
• 12.1. ELECTRICAL EQUIPMENT LIST
• 12.2. SPECIFICATIONS ELECTRICAL EQUIPMENT
• 13. E20_22_27.2SR_2.pdf
• 13.1. Crawler
• 13.2. Upper roller (E27.2SR ONLY)
• 13.3. Lower roller
• 13.4. Front idler
• 13.5. Idler adjuster
• 13.6. Sprocket
• 13.7. Travel motor
• 13.8. Slewing bearing
• 13.9. Link height
• 13.10. Height of shoe lug
• 13.11. Bushing O.D.
• 13.12. Interference of bushing and link
• 13.13. Interference of track pin and link
• 13.14. Fitting of master pin and link
• 13.15. Clearence gap of link
• 13.16. Master pin
• 13.17. Slewing speed is slow.
• 13.18. Replace seal for pump shaft.
• 13.20. Medium speed
• 13.22. Not reach max. speed
• 13.23. Adjust engine speed
• 13.25. Diaphragm cover
• 13.26. Spring
• 13.27. Center plate
• 13.28. Diaphragm
• 13.29. Remove this side
• 13.30. Bonnet
• 13.31. Breather baffle
• 13.32. Breather pipe
• 13.33. Baffle plate
• 13.34. Plug
• 13.35. Suction manifold