New Holland LM5.25, LM6.28 Service Manual

SERVICE MANUAL LM 5.25 LM 6.28 47712952B 01/10/2014 EN

Contents INTRODUCTION Engine....................................................................................... 10 [10.001] Engine and crankcase ............................................................. 10.1 [10.501] Exhaust Gas Recirculation (EGR) - Diesel Particulate Filter (DPF) exhaust treatment .................................................................................... 10.2 Four-Wheel Drive (4WD) system .................................................. 23 [23.314] Drive shaft .......................................................................... 23.1 Front axle system ....................................................................... 25 [25.100] Powered front axle ................................................................. 25.1 [25.102] Front bevel gear set and differential ............................................... 25.2 [25.108] Final drive hub, steering knuckles, and shafts ..................................... 25.3 Rear axle system ........................................................................ 27 [27.550] Non-powered rear axle ............................................................. 27.1 Hydrostatic drive ......................................................................... 29 [29.202] Hydrostatic transmission ........................................................... 29.1 Brakes and controls .................................................................... 33 [33.120] Mechanical service brakes ......................................................... 33.1 [33.202] Hydraulic service brakes ........................................................... 33.2 [33.110] Parking brake or parking lock ...................................................... 33.3 Hydraulic systems....................................................................... 35 [35.000] Hydraulic systems .................................................................. 35.1 [35.106] Variable displacement pump ....................................................... 35.2 [35.359] Main control valve .................................................................. 35.3 [35.220] Auxiliary hydraulic pump and lines ................................................. 35.4 [35.353] Hydraulic travel system ............................................................ 35.5 [35.740] Telescopic arm hydraulic system................................................... 35.6 47712952B 01/10/2014

Steering..................................................................................... 41 [41.101] Steering control .................................................................... 41.1 [41.216] Cylinders ........................................................................... 41.2 Cab climate control ..................................................................... 50 [50.200] Air conditioning ..................................................................... 50.1 Electrical systems ....................................................................... 55 [55.000] Electrical system ................................................................... 55.1 [55.100] Harnesses and connectors ......................................................... 55.2 [55.512] Cab controls ........................................................................ 55.3 Platform, cab, bodywork, and decals ............................................. 90 [90.150] Cab ................................................................................. 90.1 [90.105] Machine shields and guards ....................................................... 90.2 47712952B 01/10/2014

47712952B 01/10/2014

INTRODUCTION 47712952B 01/10/2014 1

Contents INTRODUCTION Basic instructions - Important notice regarding equipment servicing (*) ........................ 3 Basic instructions - Shop and assembly (*) ..................................................... 4 Safety rules (*) .................................................................................. 6 Personal safety (*) .............................................................................. 7 Foreword - Ecology and the environment (*) ................................................. 16 Product identification (*) ...................................................................... 17 Product identification (*) ...................................................................... 19 Torque (*) ..................................................................................... 21 Dimension (*) ................................................................................. 32 Dimension (*) ................................................................................. 34 Consumables (*) .............................................................................. 36 Consumables (*) .............................................................................. 37 Product identification - Machine orientation (*) ............................................... 38 Product identification - Machine orientation (*) ............................................... 40 Hydraulic contamination (*) ................................................................... 42 Basic instructions - How to use the maintenance standard and precautions (*) .............. 43 Basic instructions - Precaution for disassembly and assembly (*) ............................ 45 Basic instructions - Electrical equipment precautions (*) ..................................... 47 Product identification (*) ...................................................................... 48 Product identification (*) ...................................................................... 53 (*) See content for specific models 47712952B 01/10/2014 2

INTRODUCTION Basic instructions - Important notice regarding equipment servicing LM 5.25 NA --- WE LM 6.28 NA --- WE All repair and maintenance work listed in this manual must be carried out only by qualiﬁed dealership personnel, strictly complying with the instructions given, and using, whenever possible, the special tools. Anyone who performs repair and maintenance operations without complying with the procedures provided herein shall be responsible for any subsequent damages. The manufacturer and all the organizations of its distribution chain, including - without limitation - national, regional, or local dealers, reject any responsibility for damages caused by parts and/or components not approved by the manufacturer, including those used for the servicing or repair of the product manufactured or marketed by the manufacturer. In any case, no warranty is given or attributed on the product manufactured or marketed by the manufacturer in case of damages caused by parts and/or components not approved by the manufacturer. The information in this manual is up-to-date at the date of the publication. It is the policy of the manufacturer for continuous improvement. Some information could not be updated due to modiﬁcations of a technical or commercial type, or changes to the laws and regulations of different countries. In case of questions, refer to your NEW HOLLAND Sales and Service Networks. 47712952B 01/10/2014 3

INTRODUCTION Basic instructions - Shop and assembly LM 5.25 NA --- WE LM 6.28 NA --- WE Shimming For each adjustment operation, select adjusting shims and measure the adjusting shims individually using a microm- eter, then add up the recorded values. Do not rely on measuring the entire shimming set, which may be incorrect, or the rated value shown on each shim. Rotating shaft seals For correct rotating shaft seal installation, proceed as follows: 1. Before assembly, allow the seal to soak in the oil it will be sealing for at least thirty minutes. 2. Thoroughly clean the shaft and check that the working surface on the shaft is not damaged. 3. Position the sealing lip facing the fluid. NOTE: With hydrodynamic lips, take into consideration the shaft rotation direction and position the grooves so that they will move the fluid towards the inner side of the seal. 4. Coat the sealing lip with a thin layer of lubricant (use oil rather than grease). Fill the gap between the sealing lip and the dust lip on double lip seals with grease. 5. Insert the seal in its seat and press down using a flat punch or seal installation tool. Do not tap the seal with a hammer or mallet. 6. While you insert the seal, check that the seal is perpendicular to the seat. When the seal settles, make sure that the seal makes contact with the thrust element, if required. 7. To prevent damage to the seal lip on the shaft, position a protective guard during installation operations. O-ring seals Lubricate the O-ring seals before you insert them in the seats. This will prevent the O-ring seals from overturning and twisting, which would jeopardize sealing efficiency. Sealing compounds Apply a sealing compound on the mating surfaces when specified by the procedure. Before you apply the sealing compound, prepare the surfaces as directed by the product container. Spare parts Only use CNH Original Parts or NEW HOLLAND Original Parts. Only genuine spare parts guarantee the same quality, duration, and safety as original parts, as they are the same parts that are assembled during standard production. Only CNH Original Parts or NEW HOLLAND Original Parts can offer this guarantee. When ordering spare parts, always provide the following information: • Machine model (commercial name) and Product Identification Number (PIN) • Part number of the ordered part, which can be found in the parts catalog 47712952B 01/10/2014 4

INTRODUCTION Protecting the electronic and/or electrical systems during charging and welding To avoid damage to the electronic and/or electrical systems, always observe the following practices: 1. Never make or break any of the charging circuit connections when the engine is running, including the battery connections. 2. Never short any of the charging components to ground. 3. Always disconnect the ground cable from the battery before arc welding on the machine or on any machine attachment. • Position the welder ground clamp as close to the welding area as possible. • If you weld in close proximity to a computer module, then you should remove the module from the machine. • Never allow welding cables to lie on, near, or across any electrical wiring or electronic component while you weld. 4. Always disconnect the negative cable from the battery when charging the battery in the machine with a battery charger. NOTICE: If you must weld on the unit, you must disconnect the battery ground cable from the machine battery. The electronic monitoring system and charging system will be damaged if this is not done. 5. Remove the battery ground cable. Reconnect the cable when you complete welding. Special tools WARNING Battery acid causes burns. Batteries contain sulfuric acid. Avoid contact with skin, eyes or clothing. Antidote (external): Flush with water. Antidote (eyes): flush with water for 15 minutes and seek medical attention immediately. Antidote (internal): Drink large quantities of water or milk. Do not induce vomiting. Seek medical attention immediately. Failure to comply could result in death or serious injury. W0111A The special tools that NEW HOLLAND suggests and illustrate in this manual have been specifically researched and designed for use with NEW HOLLAND machines. The special tools are essential for reliable repair operations. The special tools are accurately built and rigorously tested to offer efficient and long-lasting operation. By using these tools, repair personnel will benefit from: • Operating in optimal technical conditions • Obtaining the best results • Saving time and effort • Working in safe conditions 47712952B 01/10/2014 5

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New Holland LM5.25, LM6.28 Service Manual

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