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Every one of the 754 pages in this Fiat Kobelco SL45B, SL55BH Workshop Manual PDF (OEM #604.06.923.01) exists to put your compact loader back to work. Inside: factory wiring diagrams for the full electrical system, hydraulic and hydrostatic schematics with complete oil-flow maps, and troubleshooting charts that walk you from symptom to root cause. You also get pressure tests for the hydrostatic drive (charge, case drain, high pressure, efficiency), boom and bucket cylinder rebuilds, and the whole engine teardown, turbocharger included on the SL55BH's N844T. Set cold valve clearance at 0.2 mm, fill the crankcase to 8.3L of 10W-30, and torque the control valve retaining hardware to 24 N-m. Hydrostatic drift is not a guessing game. Bookmarked at every section; type a spec into search on your phone or laptop and go straight to the page.
What's Inside This Fiat Kobelco SL45B, SL55BH Manual
| System | Pages | Key Topics |
|---|---|---|
| Compact Loader with Accessories Sl45B - Sl55Bh | - | Engine, Hydrostatic Transmission, Hydraulic System, Axles, Electrical System, Front Loader |
| Workshop Manual | 1-4 | General Information, Safety Rules, Specifications, Troubleshooting, Maintenance Standards |
| General Information | 23-58 | Introduction, About Improvements, Company Policy, Parts and Accessories, Model Codes, Precautionary Statements, Safety Precautions, General Safety Information |
| Engine | 59-178 | Engine Removal, Engine Disassembly Sequence |
| Rear Drive Axle (Gearboxes) | 179-196 | Specifications, Troubleshooting, Testing, Gearboxes (Removal and Inspection, Disassembly, Parts Inspection, Resassembly, Resinstallation) |
| Hydrostatic Transmission | 197-314 | Operation, Specifications, Troubleshooting, Hydrostatic Drive System Testing, Hydrostatic System Oil Flow, Hydrostatic Charge System Pressure Test, Hydrostatic Pump Case Drain Test |
| Brakes and Controls | 315-336 | Specifications, Troubleshooting, Testing, Parking Brake (Removal and Inspection) |
| Hydraulic System | 337-446 | Hydraulic System Compatibility, Boom Cylinder Pivot Pins (Boom Cylinder Pivot Pin Location and Machine Usage), Control Valve Power Beyond, Specifications, Troubleshooting |
| Towing Hooks and Ballasting | 447-448 | Rear Counterweights, Rear Counterweight Support Removal |
| Frames | 449-458 | ROPS, ROPS Frame, ROPS Removal, ROPS Reinstallation |
| Axles and Wheels Chapter 1 – Axles | 459-482 | Specifications, Troubleshooting, Testing, Axles (Housing Assembly Removal, Disassembly, Parts Inspection, Reassembly, Housing Reinstallation) |
| Cab Climate Control | 483-490 | Heater/Defroster |
| Electrical System | 491-652 | Advanced Warning System, Circuits, Alternator, And Starter |
| Front Loader (Boom and Mounting Plate) | 653-692 | Buckets |
| Accessories | 693-728 | Dealer Installed Options |
| Platform, Cab, Bodywork, and Decals | 729-754 | Cab and Seat |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine oil specification | API Service SH-CG4 10W-30 | p. 35 |
| Engine crankcase capacity w/filter | 8.3 L (8.8 US. qt.) | p. 52 |
| Intake (cold) | 0.2 mm (0.008 in.) | p. 51 |
| Exhaust (cold) | 0.2 mm (0.008 in.) | p. 51 |
| Control Valve Retaining Hardware | 24 N·m (18 ft. lbs.) | p. 345 |
| Main System Relief Valve | 51 N·m (38 ft. lbs.) | p. 345 |
| Engine Crankcase Capacity | 8.3 L | p. 52 |
| Hydraulic Reservoir Capacity | 14.8 L | p. 51 |
| Main System Relief Pressure | 170-177 bar | p. 52 |
| Boom Cylinder Bore | 63.5 mm | p. 344 |
| Bucket Cylinder Bore | 57.15 mm | p. 344 |
| Alternator Capacity | 40 amp | p. 504 |
Fiat Kobelco SL45B, SL55BH Common Problems This Manual Covers
Boom drifts down under load and bucket rolls forward with controls in neutral
Inspect the cylinder piston seals; the boom cylinders run a 63.5 mm bore and the bucket cylinders 57.15 mm, specs on page 344. Bypass across worn piston seals lets a load drift with the spool centered. Check the control valve spools for scoring, verify relief settings, and reseal or replace cylinders as needed.
Manual Section: Hydraulic System Troubleshooting p. 337Battery goes dead overnight and charge warning light stays on at full throttle
Verify output from the 40 amp alternator with the engine at operating speed; the spec is on page 504. Check belt tension and clean corroded battery terminals before replacing parts. With the key off, pull fuses one at a time to isolate a parasitic draw. Circuit diagrams and alternator service start on page 491.
Manual Section: Electrical System p. 491Frequently Asked Questions
What is the torque specification for the cylinder head bolts on the SL45B engine?
The cylinder head bolts for the SL45B engine must be tightened to a torque of 72-76 ft. lbs. (98-103 N·m). p. 79
How do you fix fiat Kobelco SL45B hydraulic pump whines under load, boom lifts slowly and bucket barely curls?
Check hydraulic oil level and inspect the suction line and fittings for air leaks; foaming oil makes a pump whine. Test main system relief pressure against the 170-177 bar spec on page 52. If pressure checks good but the pump still growls, look for a collapsed suction hose or clogged strainer before condemning the pump. p. 337
How do you fix engine cranks slowly or won't turn over at all after sitting overnight in cold weather?
Test battery voltage under load before condemning the starter. Clean and tighten the ground cables at the frame and engine block; a corroded ground mimics a dead starter. Bench-test the 2 kW starter motor, output spec on page 506, checking for dragging brushes and worn bushings. Work through the no-start steps.
How do you fix loader creeps in neutral, drive response feels sluggish and jerky when starting off?
Check the hydraulic reservoir level first; capacity is 14.8 L per the specs on page 51, and low oil starves charge pressure. Run the charge system pressure test and pump case drain test in the hydrostatic transmission section starting on page 197. Excessive case drain flow points to a worn pump rotating group. p. 197
Is this Fiat Kobelco SL45B, SL55BH Workshop Manual a digital download?
Immediate download of the complete 754-page searchable Workshop Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Is this Fiat Kobelco SL45B, SL55BH Workshop Manual printable?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Are there wiring harness diagrams in this Fiat Kobelco SL45B, SL55BH manual?
Included. The Fiat Kobelco SL45B, SL55BH Workshop Manual covers complete wiring harness diagrams, electrical circuits, and connector pinouts.
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