Part of the New Holland Repair Manuals.
Pilot pressure circuits, the variable displacement pump, travel and slewing motors, and the complete undercarriage all get walked end to end across the 696 pages of this New Holland EH45, SK45SR-2 service manual PDF, factory publication 6-75750 for the compact excavator line, with coverage extending to the SK40SR-2. Hydraulic schematics trace oil from the third pump circuit through the travel control valves, and wiring diagrams map the electrical system, which takes up a large share of the book. Dedicated troubleshooting sections take you through hydraulic, electrical, and engine faults one symptom at a time. Before rebuilding the front group, check boom foot pin and bushing clearance against the boom maintenance standards table, and torque M36 capscrews to 343 kgf·m on reassembly. Two in the morning, dead machine, nobody to ask. This book answers, and bookmarks plus a live text layer put you on the right section in seconds.
What's Inside This New Holland EH45, SK45SR-2 Manual
| System | Pages | Key Topics |
|---|---|---|
| Components Name and Machine Dimensions | 18-21 | Bucket Cylinder, Arm Cylinder, Boom Cylinder, Swing Cylinder, Dozer Cylinder, Hydraulic Pump, Slewing Motor, Travel Motor, Canopy, Cab, Machine Length, Machine Height, Machine Width, Crawler Width |
| Specifications and Performance | 22-93 | Preliminary Remarks, Specifications, Attachment Dimensions |
| Hydraulic System | 94-102 | Hydraulic Systems, Components System, Standard Circuit Diagram, Neutral Circuit |
| Hydraulic Circuit Operation | 103-129 | Pilot Primary Pressure Circuit, Pilot Secondary Pressure Circuit, Variable Displacement Pump Circuit, 3rd Pump Circuit, Travel Control Circuit, Slewing Operation Circuit |
| Electrical System | 130-293 | Electric System, How to Read Circuit Diagram and Harness Connection, Electrical Equipment List, Harness & Cable List, Arrangement Drawing for Components & Harness, Cab Work Light Equipment & Harness |
| Attachments | 294-323 | Bucket, Arm, Boom, Swing Bracket, Dozer, Cylinder |
| Upper Slewing Structure | 324-471 | Canopy, Cab, Floor Plate, Counterweight, Fuel Tank, Hydraulic Oil Tank, Air Cleaner, Generator |
| Travel System | 472-563 | Crawler, Upper Roller, Lower Roller, Front Idler, Idler Adjuster, Sprocket, Travel Motor, Slewing Bearing |
| Troubleshooting Hydraulic System | 564-573 | Attachment Operational Failure, Attachment Speed Is Slow, Travel Speed Is Slow, Travel Independent Operation Deviates, Slewing Speed Is Slow, Malfunction of Pump |
| Troubleshooting Electrical System | 574-587 | Engine Does Not Start, Horn Does Not Sound, Working Light Does Not Light Up, Fuel Gauge Does Not Actuate |
| Troubleshooting Engine | 588-597 | Troubleshooting |
| Engine Specifications | 598-696 | 4TNE88-Eybc, Yanmar Diesel Engine |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Rubber crawler width | 400 mm | p. 25 |
| Upper roller weight | 5 kg | p. 25 |
| Clearance of pin and bushing (Boom foot) | 0.111 mm (0.0044 in) | p. 43 |
| Tightening torque for capscrews (M6, 4.8T) | 0.45 ± 0.05 kgf·m | p. 60 |
| Tightening torque for capscrews (M36, 10.9T) | 343 ± 34 kgf·m | p. 60 |
| Parking brake timing | 6 ± 1.5 sec | p. 422 |
| Parking brake torque | 8 kgf·m (58 lbf·ft) | p. 422 |
| Grease nipple tightening torque | 6 ± 1 kgf·m (43 ± 7 lbf·ft) | p. 475 |
| Engine Oil Capacity (Max/Effective) | 5.8 L / 2.3 L | p. 35 |
| Cooling Water Capacity | 2.7 L | p. 35 |
| SK40SR-2 | ||
| Engine Rated Output (SK40SR-2) | 22.8 kW / 2,100 rpm | p. 22 |
| SK45SR-2 | ||
| Engine Rated Output (SK45SR-2) | 27.2 kW / 2,200 rpm | p. 23 |
New Holland EH45, SK45SR-2 Common Problems This Manual Covers
New Holland EH45 hydraulic functions weak and erratic, bucket and boom slow under load
Work the attachment operational failure chart on page 568: if boom, arm and bucket cannot be operated, check the control valve spool for sticking and the lever lock solenoid or switch; if the pilot pump delivery pressure is not approx. 35 kgf/cm2 (500 psi) or over, suspect the pilot pump or its relief valve, otherwise the ATT pilot valve. For slow attachment speed the chart checks travel sprocket rotations, spool movement and cylinder internal leakage (page 568). The hydraulic tank holds approx. 48 L (13 gal) (page 341).
Manual Section: Troubleshooting Hydraulic System p. 568Rubber tracks loose and slipping off front idler when turning or climbing over spoil piles
Rubber shoe tension A should be 80 ~ 90 mm (3.2 ~ 3.6 inch), or 160 ~ 180 mm for iron shoes; adjust it by feeding grease through the crawler adjuster grease nipple, tightened to T= 6 ± 1 kgf·m (43 ± 7 lbf·ft) with a 19 mm wrench (page 475). When refitting a rubber crawler, confirm it is engaged securely with the sprocket, idler and lower roller (page 475).
Manual Section: Travel System p. 475Boom drifts down with controls in neutral, attachment won't hold grade during trench work
The natural drop chart on page 569 checks each cylinder's oil tightness and internal leakage against the standard value first; if both are within it, the causes are the control valve spool, the lock valve or the overload relief valve (page 569). The anticavitation valve is essential for performance and safety and is replaced as an assembly in case of abnormality; its plug is tightened to T=6 kgf·m (43 lbf·ft) (page 406).
Manual Section: Control Valve Troubleshooting p. 569Machine pulls to one side during travel, one track noticeably slower than the other
Work the travel speed is slow chart on page 570: check travel sprocket speed and whether it changes between 1st and 2nd speed, look for wear dust on the hydraulic oil return filter (travel motor failure) or in the travel reduction unit oil, check travel motor drain, and check the travel 1, 2 speed solenoid valve. The travel reduction unit takes 1.0 L (0.26 gal) of GL-4 #90 gear oil (page 245).
Manual Section: Travel System p. 570Engine cranks slowly or won't start after machine sits overnight in cold weather
'Engine does not start' is item 1-(1) of the electrical troubleshooting section indexed on page 574, with causes laid out by phenomenon in the trouble diagnosis table on page 576. Engine oil volume is 5.8 L max and 2.3 L effective (page 35), and the engine itself is covered by the included Yanmar service manual for the 4TNE88 (page 598).
Manual Section: Troubleshooting Electrical System p. 574Frequently Asked Questions
What are the torque specifications for the sprocket attaching socket bolts on the New Holland EH45?
The tightening torque for the sprocket attaching socket bolts on the New Holland EH45 is 18.5 kgf·m (134 lbf·ft). p. 501
What is the replacement specification for the hydraulic oil return filter on the New Holland EH45?
The return filter for the hydraulic system is a paper filter with a safety valve rated at 30 microns. p. 22
What is the correct engine oil capacity for the New Holland EH45?
The engine oil volume for the New Holland EH45 is 5.8 liters for the maximum capacity and 2.3 liters for the effective capacity. p. 35
What is the standard valve clearance for the New Holland EH45 engine?
The standard valve clearance for both intake and exhaust valves on the New Holland EH45 engine is 0.2 mm (0.008 in) when the engine is in a cold condition. p. 35
What is the procedure for checking the V-belt tension on the New Holland EH45 engine?
Push the center of the V-belt between the alternator and cooling water pump with a finger. The V-belt tension is acceptable if the deflection is 10-15 mm. p. 637
Is this New Holland EH45 manual a download or a disc?
You download the Service Manual yourself: 696 pages, searchable PDF, available immediately. Keep a copy on every device you use.
Is printing allowed for this New Holland EH45 Service Manual?
You can. The PDF is unlocked and carries no copy protection, so print the sections you want and keep the file as your backup.
Reviews
There are no reviews yet.