New Holland LB75.B, LB90, LB110 & LB115.B Backhoe Loader 2000–2005 Service Manual (P/N 604.56.061.00)

This New Holland service manual covers 2000–2005 LB75.B, LB90, LB110, and LB115.B backhoe loaders, including naturally aspirated and turbocharged configurations. It carries document code 604.56.061.00 and the September 2000 issue date.

Searchable Text, Chapter Bookmarks, and Diagram Detail

Text access and wiring detail: Main text sections support PDF text search, and embedded bookmarks link to the major sections and chapters. Some wiring-diagram characters do not search reliably. Small connector numbers and wire codes in the detailed electrical drawings require zooming.

The download contains one 1,494-page printable PDF, including six introductory owner/safety pages, 46 notes pages, and one blank page.

Engine Overhaul, Drivetrain Diagnosis, and Backhoe Service

These selected service topics show the manual’s repair coverage without reproducing the full contents. Other examples include cab-glass replacement and heater-core servicing.

• Engine repair: Engine removal and installation, cylinder-head overhaul, timing-gear work, piston and crankshaft inspection, and lubrication- and cooling-system service.

• Fuel system and turbocharger: Lucas DPS/DP203 injection-pump removal and timing, injector testing, electric lift-pump checks, and turbocharger inspection and housing service.

• Transmission diagnosis: Powershuttle and Powershift pressure tests, torque-converter checks, internal overhaul, clutch-pack service, and Powershift microprocessor fault diagnosis.

• Axles, steering, and brakes: Separate conventional and 4WS axle procedures, differential adjustments, steering-unit overhaul, wet multi-disc brake service, and brake bleeding.

• Hydraulic systems: Husco and Rexroth control-valve procedures, pressure and flow testing, pump and flow-divider overhaul, and hydraulic-cylinder repair.

• Electrical troubleshooting: Wiring diagrams, connector and pin references, starter and charging-system tests, instrument diagnostics, immobilizer circuits, and component checks.

• Loader and backhoe assemblies: Loader-arm and bucket removal, control-linkage service, boom and dipperstick removal, and extendible-dipperstick wear-pad inspection and adjustment.

New Holland specifies authorized workshops for the maintenance and repair operations described, using the special equipment indicated for the work.

Engine Inspection and Fuel-System Limits

Having the factory clearance data on a shop laptop lets you compare measured wear at the workbench with the manual’s repair and wear limits. The engine section covers cylinder-head and valve-guide inspection, cylinder-bore repair and sleeving, crankshaft-journal measurements, and service-bearing selection.

The fuel sections distinguish naturally aspirated and turbocharged applications. A dimensioned injection-pump drive-gear puller drawing supports workshop tool preparation; the timing references identify tools 297119, 297512, and 297513.

Injection-pump scope: Step-by-step instructions cover pump removal, timing, and installation. Internal DP203 pump disassembly, testing, adjustment, and repair are assigned to an authorized CAV specialist with the required equipment.

Turbocharger scope: Housing removal, inspection, clearance checks, and reassembly are documented. The factory-balanced center housing and rotating assembly (CHRA) must remain assembled: the manual warns that dismantling it destroys its balance. It also explains that damaged wheel blades can cause further turbocharger or engine damage.

Powershift Controls, Axles, and Brake Service

Powershift diagnosis goes beyond mechanical overhaul. The operating-lever chapter explains microprocessor input/output test modes, connector functions, LED indications, and fault codes F1–F13, including the self-calibration status indication.

Transmission power-flow drawings and control-valve circuit illustrations support the pressure-test information. Separate axle sections distinguish mechanical and electrically operated differential locks, conventional steering axles, and 4WS assemblies.

Bearing-preload, gear-backlash, and shim references accompany the axle procedures. The brake chapters distinguish the axle-mounted wet brakes from the driveline parking brake and include the related bleeding and adjustment procedures.

Husco and Rexroth Hydraulic Circuits

The hydraulic chapters separate Husco arrangements from Rexroth circuits, including regional and 4WS differences. This keeps the relevant valve layout, test points, and pressure/flow procedures associated with the machine’s configuration before component removal is considered.

Illustrations include Main Hydraulic System (Less Options) circuits, Load Sensing Flow Sharing Hydraulic System drawings, and Hydraulic Control Valve Section views. Pump service covers the Cassapa assembly, steering-priority flow divider, and front and rear pumping elements.

Loader service extends to self-leveling linkage and return-to-dig sensor adjustment. Backhoe sections cover the swing system, carriage, transport boom lock, and extendible-dipperstick wear pads. Accessory instructions include selected control-pattern conversions, hammer circuits, hydraulic lockout valves, and ride control.

Electrical Fault Tracing and Cab Systems

The electrical drawings distinguish North American and other-market configurations, ROPS and cab arrangements, and Powershuttle, Powershift, and 4WS circuits. System from Key Start diagrams, instrument-panel pin tables, and connector references support circuit tracing.

Dedicated chapters cover starter bench tests, alternator component tests, instrument fault indications, speedometer calibration, and immobilizer circuits. Cab-system coverage also includes air-conditioning fault diagnosis and R134a service procedures requiring suitable recovery equipment.

Please note that servicing heavy machinery carries inherent physical risks. Always rely on qualified technicians and adhere strictly to the original manufacturer safety protocols, particularly for raised equipment, heavy components, and pressurized hydraulic systems.

Examples of Engine Assembly and Valve-Lash Specifications

Engine assembly references include main-bearing bolt torque of 197 Nm (145 lb-ft). Cylinder-head installation specifies lubricated bolts, a cold engine, and three tightening stages of 156, 190, and 217 Nm (115, 140, and 160 lb-ft), together with the tightening pattern.

Cold valve-lash specifications are 0.36–0.46 mm (0.014–0.018 in) for the intake valves and 0.43–0.53 mm (0.017–0.021 in) for the exhaust valves. These accompany the component clearances and inspection limits used during engine service.