Part of the New Holland Repair Manuals.
Boomer 45, Boomer 50 and Boomer 55 Tier 4B (final) compact tractors, in both Cab and ROPS versions, are what this book covers. It is New Holland service manual 48144020, 1st edition English, June 2017, for North America. The PIN range for each model and version is printed on the cover, so check yours against it before you buy.
The manual covers the three-cylinder common rail diesel, the HST and 16 x 16 mechanical transmissions, the powered front axle, PTO, hydraulics with schematics, cab and ROPS wiring sheets, and fault codes.
It prints the figures you work to, such as 43.0 L (11.4 US gal) for the rear axle and transmission including hydraulics, and 176 - 196 N·m (130 - 145 lb ft) for the front wheel bolts and nuts.
What's Inside This New Holland Boomer 45, Boomer 50, Boomer 55 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and Specifications | 1-70 | Publication Applicability, Safety Rules, General Specifications, Consumables, Cab and ROPS Dimensions, Product Identification |
| Engine | 71-178 | Engine and Crankcase, Fuel Tanks and Filters, Fuel Injection, Air Cleaners, Intake and Exhaust Manifolds, EGR Exhaust Treatment, Cooling System |
| Clutch and Power Coupling | 179-214 | Clutch Mechanical Release Control, Thrust Bearing and Sleeve, Clutch Removal and Installation, Free Play Adjustment, Flywheel Damper |
| Transmission | 215-344 | 16 X 16 Mechanical Transmission, Fluid Change, External Shift Controls, Internal Gears and Shafts, Transmission Housing |
| Four-Wheel Drive and Front Axle | 345-450 | 4WD Drive Shaft and Control, Powered Front Axle, Front Bevel Gears and Differential, Final Drive Hubs, Steering Knuckles |
| Rear Axle System | 451-504 | Rear Bevel Gear Set, Rear Differential, Differential Lock, Bevel Pinion, Differential Backlash, Planetary Final Drives |
| Hydrostatic Drive | 505-622 | Hydrostatic Control, Reservoir, Cooler and Lines, Pump and Motor Components, Hydrostatic Transmission, Pressure Testing, HST Troubleshooting |
| Power Take-Off (PTO) | 623-698 | Rear Mechanical and Electro-Hydraulic Control, One-Speed Rear PTO, Central PTO, PTO Clutch, Pressure Testing, Troubleshooting |
| Brakes and Controls | 699-748 | Parking Brake, Mechanical Service Brakes, Brake Linkage, Brake Discs, Brake Control Adjustment, Brake Pedals |
| Hydraulic Systems | 749-898 | Hydraulic Schematics, Reservoir and Filters, Fixed Displacement Pump, Relief Valves, Remote Control Valves, Three-Point Hitch Control Valve, Front Loader Control |
| Hitches, Drawbars and Implement Couplings | 899-952 | Drawbars and Towing Hitches, Rear Three-Point Hitch Controls, Hitch Linkage Adjustments, Hitch Troubleshooting |
| Steering and Wheels | 953-1060 | Steering Control, Tie Rods, Steering Cylinders, Steering Pump, Front and Rear Wheels, Tire Pressures and Wheel Torque |
| Cab Climate Control | 1061-1178 | Heating, Ventilation, Air Conditioning, Cab Pressurizing System, Climate Control Diagnosis |
| Electrical Systems: Harnesses and Schematics | 1179-1541 | Electrical Component Localization, Wiring Harness Identification, Cab and ROPS Electrical Schematic Sheets, Connector Diagrams |
| Electrical Controls, Starting and Charging | 1542-1699 | Cab Engine Controls, Starting System, Alternator and Battery, Fuel Tank Electrical, EGR Electrical, Electronic Modules, Transmission and PTO Controls |
| Fault Codes | 1700-2102 | Injector and Fuel Rail, Oil Pressure, Intake and Coolant Sensor, EGR and DPF, ECU Internal and CAN Fault Codes, Diagnostic Tests |
| Platform, Cab, Bodywork and Special Tools | 2103-2209 | Cab Removal and Installation, Operator Platform, Operator Protections, Seat, Engine Hood and Panels, Fenders, Special Tool Index |
| Electrical Schematics (ROPS and Cab) | 2210-2213 | ROPS Electrical Schematic 48090748, Cab Electrical Schematic 48090749, Power and Ground Distribution, Lighting, CAN Network |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine gross power, Boomer 45 | 33 kW (45 Hp) | p. 50 |
| Engine gross power, Boomer 50 | 37 kW (50 Hp) | p. 50 |
| Engine gross power, Boomer 55 | 41 kW (56 Hp) | p. 50 |
| Engine displacement | 1879 cm³ (114.7 in³) | p. 50 |
| Engine low idle speed | 850 RPM | p. 50 |
| Fuel tank capacity | 47 L (12 US gal) | p. 50 |
| Engine oil capacity with filter | 5.0 l (5.3 US qt) | p. 95 |
| Rear axle and transmission capacity, includes hydraulics | 43.0 L (11.4 US gal) | p. 50 |
| Front axle capacity | 8.0 L (2.1 US gal) | p. 50 |
| Radiator cap pressure | 90 kPa (13 psi) | p. 51 |
| Hydraulic safety relief valve setting | 19609 kPa (2844 psi) | p. 755 |
| Hydraulic pump capacity at full throttle | 31.2 L/min (8.2 US gpm) @ 2600 RPM | p. 755 |
| Engine speed for 540 RPM rear PTO, HST | 2409 RPM | p. 53 |
| Engine speed for 2000 RPM mid PTO (optional), HST | 2563 RPM | p. 53 |
| Front agricultural tire | 9.5 x 16, R1 | p. 56 |
| Rear agricultural tire | 13.6 x 24 , 4PR, R1 | p. 56 |
| Weight with ROPS, less tires, HST (FWD) | 1583 kg (3490 lb) | p. 62 |
| Weight with cab and R1 Ag tires, HST (FWD) | 1945 kg (4288 lb) | p. 64 |
| Front wheel bolts and nuts torque | 176 - 196 N·m (130 - 145 lb ft) | p. 1048 |
| Front frame M14 bolts torque (engine install) | 140 N·m (103 lb ft) | p. 88 |
New Holland Boomer 45, Boomer 50, Boomer 55 Common Problems This Manual Covers
HST erratic operation
The HST troubleshooting table lists low charge pressure as the cause, and the fix is to check the charge relief valve. Use the pressure testing procedure in the Hydrostatic Drive chapter to confirm low charge pressure before you take anything apart. Then inspect the charge relief valve. The same chapter covers the pump and motor components, so the valve check comes first in the printed sequence.
Manual Section: Hydrostatic transmission - Troubleshooting For the Hydrostatic Transmission (HST) unit p. 618HST abnormal noise
The HST troubleshooting table lists a clogged suction strainer as the cause, and the fix is to clean the strainer. The Hydrostatic Drive chapter covers the reservoir, cooler and lines, so you can locate the strainer and get to it without guessing. After cleaning, refill to the specified 43.0 L (11.4 US gal) capacity, which includes the hydraulics.
Manual Section: Hydrostatic transmission - Troubleshooting For the Hydrostatic Transmission (HST) unit p. 618Relief valve operates when the implement is in the full raise position
According to the Hydraulic systems troubleshooting table, the HPL upper stop is out of adjustment, so the hitch keeps pushing against its end of travel. The fix is to adjust the position of the upper stop. The manual's safety relief valve setting is 19609 kPa (2844 psi). The printed remedy is the upper stop adjustment, not a change to the relief valve setting.
Manual Section: Hydraulic systems - Troubleshooting p. 771Hydraulic fluid overheats during rear three-point hitch work
The rear three-point hitch troubleshooting table lists a faulty pump as the cause, and the fix is to replace the pump. The Hydraulic Systems chapter covers the fixed displacement pump, and the specs give its capacity as 31.2 L/min (8.2 US gpm) at 2600 RPM. Work through the hitch troubleshooting steps before you order a new pump. Then refill the 43.0 L system with the correct fluid.
Manual Section: Rear three-point hitch - Troubleshooting p. 949Frequently Asked Questions
Which New Holland Boomer tractors does this service manual cover?
It covers the Boomer 45, Boomer 50 and Boomer 55 Tier 4B (final) compact tractors for North America, in Cab and ROPS versions. This is service manual 48144020, 1st edition English, June 2017. The cover lists a PIN range for each model and version. For example, the Boomer 45 Cab runs from PIN LSM0B45Cxx0010001 to LSM0B45CAH0010031. Read the PIN off your tractor and check it against the cover. p. 1
What engine and power does each Boomer model have?
The Boomer 45 has the L3C19-T3 engine at 33 kW (45 Hp) gross. The Boomer 50 has the L3C19-T2 at 37 kW (50 Hp). The Boomer 55 has the L3C19-T1 at 41 kW (56 Hp). All three are three-cylinder common rail diesels with a displacement of 1879 cm³ (114.7 in³). The engine code for your model is the one to quote when you order engine parts. p. 50
What are the fuel, engine oil and transmission fluid capacities for the New Holland Boomer 45, Boomer 50, Boomer 55?
The fuel tank holds 47 L (12 US gal). Engine oil with a filter change takes 5.0 l (5.3 US qt). The rear axle and transmission take 43.0 L (11.4 US gal), and that figure includes the hydraulics. It is the same on mechanical and hydrostatic tractors. The front axle takes 8.0 L (2.1 US gal). Buy enough fluid before you pull the drain plug. p. 50
What engine speed gives 540 RPM at the rear PTO on HST tractors?
On HST tractors, 2409 RPM engine speed gives 540 RPM at the rear PTO. If your tractor has the optional 2000 RPM mid PTO, run the engine at 2563 RPM. p. 53
Does the manual include wiring diagrams, hydraulic schematics and fault codes?
Yes. There are electrical schematic sheets with component lists for the cab version (pages 1247-1278) and the ROPS version (pages 1279-1302). Fold-out ROPS and cab schematics are at the back of the book. The Hydraulic systems chapter has schematics for both mechanical and HST transmission tractors. The FAULT CODES chapter gives a procedure for each code, such as s100 F02 (P0522) - Engine oil pressure fault and s110 F03 (P0118) - Coolant sensor high fault. p. 1247
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