JCB 446, 456 Wheeled Loading Shovel Service Manual (9803/4180-08)

This service manual delivers comprehensive technical details, diagnostics, and repair instructions for JCB 446 and 456 Wheeled Loading Shovels. Ideal for workshops handling advanced repairs and preventative maintenance.

Model Covers:

JCB 456 Wheeled Loading Shovel from serial number 539000
JCB 446 Wheeled Loading Shovel from serial number 540000

File Format: PDF

Size: 78.29 MB

No. of pages: 1026

Language: English

Delivery Method: Instant Download - Access your file immediately after purchase.

📑 Included Sections:

General Information

• Machine model and serial number identification
• Standard torque settings for zinc plated and Dacromet fasteners
• Hydraulic connection systems, O-ring face seal, and Torque Stop details
• Service tools and equipment reference list with diagrams
• Sealing and retaining compound specifications

Care and Safety

• Detailed safety protocols for operation and maintenance
• Safety labels identification and placement diagrams
• Comprehensive checklists for emergency and routine safety measures

Routine Maintenance

• Service schedules, fluid specifications, and consumables
• Step-by-step lubrication, inspection, and cleaning procedures
• Detailed instructions for battery care and air conditioning maintenance

Body and Framework

• Cab structure servicing, air conditioning system diagnostics
• Cooling pack removal, bodywork replacement, and ROPS/FOPS checks

Electrical Systems

• Full wiring diagrams with schematic circuits and harness identification
• EMS (Electronic Monitoring System) fault codes and diagnostic routines
• Battery testing, alternator, starter motor, and relay servicing

Hydraulic Systems

• Hydraulic schematics and flow diagrams with component keys
• Pump and valve servicing, accumulator maintenance, and system testing
• Loader arm and ram servicing with disassembly and reassembly steps

Transmission

• Powershift transmission servicing, fault-finding, and functional testing
• Axle removal and reassembly, differential servicing, and crown wheel adjustments

Brakes and Steering

• Service and parking brake testing, bleeding, and pad renewal
• Hydraulic steering system schematics and emergency steering procedures

Engine

• Engine specifications for multiple variants including Perkins and Cummins models
• Cooling, fuel, and lubrication system maintenance
• Procedures for engine removal, installation, and fault diagnosis

Note:

• 446 (Before Serial No. 1181000) & 456 (Before Serial No. 1169000): Engine Service Manual Publication No. 9806/2130
• 446 (From Serial No. 1181000) & 456e (From Serial No. 1169000): Engine Service Manual Publications No. 9806/2300, 9806/2301, 9806/2302, 9806/2304

Be ready for any service challenge with this JCB 446 and 456 Service Manual – your essential companion for diagnostics, maintenance, and field repairs.