Working on a 1993-2004 articulated dump truck? This 383-page JCB 714 Service Manual PDF (OEM #9803/7160) breaks down the complete transmission, suspension, and hydraulic assemblies for both the 714 and 718 models. It maps the full hydraulic schematic circuits, step-by-step troubleshooting charts for the suspension control valve, and the wiring diagrams that track down electrical faults. Flip to any chapter for factory torque tables and precise maintenance schedules. Lock down the ROPS/FOPS mounting bolts to 330 Nm and confirm the engine oil system is topped off at exactly 16.3 liters before turning the key. When your hauler is down, download this bookmarked file straight to your tablet, find the exact repair spec, and get that truck back to moving dirt.
What's Inside This JCB 714, 718, 714 Dumper Truck, 718 Dumper Truck Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 4-25 | Service Tools |
| Care & Safety | 26-36 | Maintenance Safety |
| Routine Maintenance | 37-87 | Service Schedules, Tipper Body Safety Support, Greasing, Engine Cooling System, Fuel System |
| Body & Framework | 88-116 | Direct Glazing, Centre Pivot, Air Conditioning/Heater System |
| Electrics | 117-158 | Technical Data, Test Methods, Batteries, Alternator, Starter Motor, Circuit Diagrams, Fuses and Relays, Display Panel |
| Hydraulics | 159-201 | Schematic Circuits, Hydraulic Pump, Servo Joystick, Control Valve, Body Lift Ram |
| Transmission | 202-300 | Dismantling, Assembly, Hydraulic Control Unit, Functional Testing, Axles, Propshafts |
| Brakes | 301-327 | Parking Brake, Service Brake Circuits, Valves and Pedals |
| Steering | 328-350 | Hydraulic Steering Unit, Emergency Steering Pump, Steering Rams, Emergency Steering Valve |
| Engine | 351-355 | Technical Data, Adt 714 Machine (Tier 1 Engine), Adt 718 Machine (Tier 1 Engine), Adt 714 and 718 (Tier 2 Engines), Description of Tier 2 Engines |
| Suspension | 356-383 | Hydraulic Suspension Cylinders, Main Suspension Valve, Suspension Control Valve and Accumulators, Suspension Setting-Up |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Wheel Nut Torque | 600 Nm (442 lbf ft) | p. 85 |
| Parking Brake Pad E minimum material thickness | 15 mm (0.590 in) | p. 78 |
| Parking Brake Pad F minimum material thickness | 20 mm (0.787 in) | p. 78 |
| ROPS/FOPS Mounting Bolts Torque | 330 Nm (243 lbf ft) | p. 52 |
| Engine Oil Capacity (including filter) | 16.3 litres (3.58 UK gal) | p. 86 |
| Hydraulic Tank Capacity | 88 litres (19.3 UK gal) | p. 86 |
| Fuel System Capacity | 200 litres (44 UK gal) | p. 86 |
| ADT 714 Machine | ||
| Transmission Oil Capacity | 35 litres (7.7 UK gal) | p. 86 |
| Main Relief Valve Operating Pressure | 175 ± 2 bar | p. 160 |
| ADT 718 Machine | ||
| Transmission Oil Capacity | 37 litres (8.1 UK gal) | p. 87 |
| Main Relief Valve Operating Pressure | 210 bar | p. 160 |
| ADT 718 Machine Only | ||
| Suspension Accumulators Precharge Pressure | 31 bar (31.6 kgf/cm², 450 lbf/in²) | p. 357 |
JCB 714, 718, 714 Dumper Truck, 718 Dumper Truck Common Problems This Manual Covers
JCB 718 transmission slipping under load with error code 205 and complete loss of gear engagement
Check the transmission error code reference to confirm the clutch fault. Drain the fluid and inspect the clutch pack for internal wear. When refilling the ADT 718 machine, add exactly 37 litres (8.1 UK gal) of fresh transmission oil.
Manual Section: Transmission Functional Testing (Error Codes)Hydraulic pump failure with error code 100 and no body lifting capability or erratic arm movement p. 160
Test the main relief valve operating pressure at the test port. Adjust the valve to reach 175 ± 2 bar for the ADT 714 machine as specified on page 160. Inspect the hydraulic fluid for contamination and replace the pump seals if pressure drops.
Manual Section: HydraulicsBrake system pressure loss with uneven stopping power and code 400 displayed on the dash monitor p. 322
Measure the service brake pad material thickness to ensure it exceeds the 2 mm (0.08 in) minimum limit shown on page 322. Replace worn pads and calipers immediately. Always bleed the brake circuits fully and check the master cylinder fluid level before operating.
Manual Section: BrakesSuspension system bottoming out on rough terrain with no leveling adjustment and poor ride quality p. 357
Inspect the suspension control valve and test the accumulator pressure. Verify the suspension accumulators precharge pressure reads exactly 31 bar (31.6 kgf/cm², 450 lbf/in²) on the ADT 718 machine as detailed on page 357. Recharge the nitrogen gas if the pressure falls below specification.
Manual Section: SuspensionFrequently Asked Questions
How do I reset the service indicator on a JCB 714 or 718?
The service indicator on a JCB 714 or 718, which displays 'SERVICE REQD', is reset when data is downloaded by a JCB distributor. The manual does not provide a user-level procedure for resetting this indicator.
What are the common error codes on a JCB 718 dumper?
The manual lists various error codes for the transmission and hydraulic suspension systems. For example, transmission fault code 11 indicates a "Logical error at gear range signal," while suspension fault code S1 indicates "No signal is detected from the self levelling suspension switches to the EMS." Detailed tables of fault codes, possible causes, and actions are provided on pages 269-278 for transmission and page 383 for suspension.
What are the torque specs for JCB 714/718 wheel nuts?
For JCB 714 and 718 dumper trucks, the wheel nut torque specification is 600 Nm (442 lbf ft). It is recommended to check wheel nut torques every 10 hours on new machines and whenever a wheel has been removed until they remain correct.
What are the replacement specifications for Hydraulic pump seals?
For hydraulic pump seals, the manual specifies to remove and discard the old O-ring and to renew the drive shaft seal as necessary. For replacement, a new O-ring should be used between pumps 21 and 22 and the transmission housing, but no specific dimensions or material types are provided.
How quickly can I access this JCB 714, 718, 714 Dumper Truck, 718 Dumper Truck?
A 383-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 able to print pages from this JCB 714, 718, 714 Dumper Truck, 718 Dumper?
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 JCB 714, 718, 714 Dumper Truck, 718?
Included. The JCB 714, 718, 714 Dumper Truck, 718 Dumper Truck Service Manual covers complete wiring harness diagrams, electrical circuits, and connector pinouts.
Document Quality
This document is a scanned PDF, meaning the text is not selectable or searchable, and there is no OCR layer. The text quality is consistently clear and easy to read throughout. All diagrams and illustrations are raster images, but their labels are generally readable. The pages are clean with no noticeable scan artifacts, stains, or skewed content.
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