Part of the New Holland Repair Manuals.
A hydrostatic compact tractor hides most of its faults in the drive circuit and the wiring harness, and this New Holland Boomer 24 service manual PDF (OEM ID 47827505) puts 749 pages of factory answers behind both. Hydrostatic transmission teardowns, from control linkage to pump and motor components, fill a long stretch of the middle chapters, while electrical schematics and connector pinouts claim roughly the last quarter of the book. Troubleshooting tables trace the three-point hitch, PTO engagement, and steering circuits from symptom to failed part. Before you condemn a cooling problem, verify the thermostat starts opening at 76.5 °C; when your wheels go back on, pull rear disc-to-axle bolts to 176 to 196 N·m. Every dry afternoon the Boomer sits is mowing you don't get back. Bookmarked and text-searchable, this PDF goes wherever the tractor is parked; download it and the whole book is yours tonight.
What's Inside This New Holland Boomer 24 Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine | 34-61 | Engine and Crankcase, Engine Lubrication System, Engine Cooling System |
| Transmission | 62-73 | Gearbox |
| Front Axle System | 74-137 | Powered Front Axle, Front Bevel Gear Set and Differential, Final Drive Hub, Steering Knuckles, And Shafts, Final Drives |
| Rear Axle System | 138-161 | Rear Bevel Gear Set and Differential, Planetary and Final Drives |
| Hydrostatic Drive | 162-265 | Transmission and Steering Hydrostatic Control, Hydrostatic Transmission, Reservoir, Cooler, And Lines, Pump and Motor Components |
| Power Take-Off (PTO) | 266-331 | Rear Mechanical Control, Rear Electro-Hydraulic Control, One-Speed Rear Power Take-Off, Central Power Take-Off |
| Brakes and Controls | 332-355 | Parking Brake or Parking Lock, Mechanical Service Brakes |
| Hydraulic Systems | 356-449 | Fixed Displacement Pump, Three-Point Hitch Control Valve, Three-Point Hitch Cylinder, Remote Control Valves, Reservoir, Cooler, And Filters, Safety and Main Relief Valves |
| Hitches, Drawbars, and Implement Couplings | 450-459 | Rear Three-Point Hitch |
| Steering | 460-535 | Tie Rods, Hydraulic Control Components, Cylinders |
| Wheels | 536-549 | Front Wheels, Rear Wheels |
| Electrical Systems | 550-739 | Electrical System, Fuel Injection System, Fuel Tank System, Engine Cooling System, Engine Oil System, Parking Brake Electrical System, Rear Power Take-Off Control System |
| Platform, Cab, Bodywork, and Decals | 740-749 | Mechanically-Adjusted Operator Seat |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Front wheel --- Disc-to-hub | 93 - 108 N·m | p. 25 |
| Rear wheel --- Disc-to axle | 176 - 196 N·m | p. 25 |
| Thermostat start to open | 76.5 °C | p. 23 |
| Thermostat fully open | 90 °C | p. 23 |
| Engine coolant capacity (drain and refill) | 3.8 l (1 US gal) | p. 43 |
| Backlash tolerance | 0.2 - 0.4 mm (0.008 - 0.016 in) | p. 134 |
| pivot ball to joystick block screw torque | 6.6 N·m (58 lb in) | p. 426 |
| Engine Oil Capacity (with filter) | 4.2 L | p. 23 |
| Fuel Tank Capacity | 25.0 L | p. 23 |
| Cooling system capacity (general specification) | 1.8 L | p. 23 |
| Front Axle Oil Capacity | 3.0 L | p. 23 |
| Rear Axle and Transmission Oil Capacity | 20 L | p. 23 |
New Holland Boomer 24 Common Problems This Manual Covers
New Holland Boomer 24 loader joystick flops loose, bucket won't respond to any stick movement
Remove the joystick boot and inspect the pivot ball connection at the joystick block; those screws back out and leave the stick flopping. Retorque the pivot ball screws to 6.6 N·m (58 lb in) per page 426. If the linkage is tight, test the loader valve spools in the Hydraulic Systems section starting on page 356.
Manual Section: Hydraulic Systems p. 426Engine warms up too fast and runs hot, or never reaches operating temperature
Drain the cooling system and pull the thermostat. Test it in heating water: it should start opening at 76.5 °C and stand fully open at 90 °C per the specification table on page 23. Replace it if it sticks either way, then refill with 3.8 L (1 US gal) of coolant and burp the system at the radiator neck.
Manual Section: Engine p. 16Three-point hitch or loader lifts slowly, settles under load, or won't lift at all
Check the reservoir level and change the hydraulic filter first; a starved pump lifts slow and settles fast. Tee a gauge into the pump circuit and stall the lift: you want the main relief setting of 14707 kPa listed on page 360. Low pressure points to the relief valve or a worn pump, covered in Hydraulic Systems starting page 356.
Manual Section: Hydraulic Systems p. 360Engine misses and bogs down under load while mowing, power comes and goes
Replace the fuel filter and check for air leaks at the suction line before chasing injectors; water in the 25.0 L fuel tank is the usual mowing miss. If the engine sounds healthy but the tractor still lugs, the drive is bleeding off: verify the HST high pressure relief holds 25988 kPa per page 174.
Manual Section: Hydrostatic Drive p. 174Steering wheel turns stiff and slow, front wheels lag behind or wander
Verify hydraulic oil level and filter condition first, then gauge the steering circuit: relief pressure should hold 8825 kPa as listed on page 472. Pressure in spec with stiff steering points at the steering control unit itself; teardown and inspection live in the Steering section starting on page 460. Check tie rod ends for slop while you're under there.
Manual Section: Steering p. 472Frequently Asked Questions
What are the torque specifications for the Boomer 24 wheel lugs?
The torque specifications for the front wheel disc-to-hub bolts are 93 - 108 N·m (69 - 80 lb ft). For the rear wheel disc-to-axle bolts, the torque is 176 - 196 N·m (130 - 145 lb ft). p. 25
What are the replacement specifications for the battery on the Boomer 24?
The replacement battery for the Boomer 24 must be a 12-volt battery with a negative ground, 430 CCA, and BCI Group 85 size. p. 23
What is the engine oil capacity for the Boomer 24?
The engine crankcase capacity for the Boomer 24, including the filter, is 4.2 liters (4.4 US quarts). p. 23
What is the correct valve clearance for the Boomer 24 engine?
The valve clearance for both the intake and exhaust valves on the Boomer 24 engine is 0.25 mm (0.010 in) when cold. p. 23
What is the torque specification for the cylinder head bolts on the Boomer 24?
The cylinder head bolts on the Boomer 24 engine must be tightened to a torque of 83 - 93 N·m (61 - 69 lb ft). p. 41
Is this New Holland Boomer 24 manual a download or a disc?
A 749-page Service Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Am I free to print this New Holland Boomer 24 Service Manual?
Printing is allowed without restriction. Pull the pages you need for the job and bin them when they get greasy.
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