Looking for the factory repair procedures for your 1993-2004 articulated dump truck? This 383-page JCB 714 service manual PDF (OEM #9803/7160) covers every mechanical and electrical system on the 714 and 718 models. Open the file to the hydraulics section to trace fluid routing through the control valves and body lift rams using full schematic circuits. The manual includes complete electrical test methods and detailed wiring diagrams. The engine section covers technical data, descriptions of Tier 2 engines, and removal/replacement of the Charge Air Cooler, referring to a separate engine service manual for other engine service tools. Verify the return line filter is rated at 10 microns and lock down the 714 brake disc screws to exactly 65-75 Nm before putting the truck back into the dirt. Stop wasting time hunting for lost suspension error codes on internet forums. Grab this bookmarked download, pull it up on your shop tablet, and get the repair done right.
What's Inside This JCB 714, 718, 714 Dumper Truck, 718 Dumper Truck Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 4-25 | Identification (Vehicle Identification Plate, Explanation of the Vehicle Identification Number, Unit Identification), Torque Settings |
| 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, Charge Air Cooler |
| 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 | ||
| UNF Grade 'S' Bolts Torque (1/4 in / 6.3mm) | 14 Nm (1.4 kgf m, 10 lbf ft) | p. 6 |
| Metric Grade 8.8 Bolts Torque (M5 / 5mm) | 7 Nm (0.7 kgf m, 5 lbf ft) | p. 6 |
| Filter (Return Line) Filtration Size | 10 Micron | p. 160 |
| Hydraulic Filter Element Torque | Hand tight | p. 81 |
| Fuel Filter Element Torque | Hand tight only | p. 71 |
| Compressor Hose End Pipes Torque (Item M) | 32.5 ± 3 Nm (3.3 ± 0.4 kgf m, 24 ± 3 lbf ft) | p. 108 |
| Compressor Hose End Pipes Torque (Item N) | 23.5 ± 3.4 Nm (2.4 ± 0.35 kgf m, 17.5 ± 2.5 lbf ft) | p. 108 |
| Pressure Regulator Setting Cut-in | 140 bar (2030 lbf/in2) | p. 302 |
| Pressure Regulator Setting Cut-out | 175 bar (2537.5 lbf/in2) | p. 302 |
| ADT 718 Machine Only | ||
| Hydraulic Suspension System Error Code S1 | No signal is detected from the self levelling suspension switches to the EMS | p. 383 |
| Hydraulic Suspension System Error Code S2 | Out of range or incorrect signal received from the self levelling suspension switches | p. 383 |
| ADT 714 Machine | ||
| Steer Relief Valve Operating Pressure | 175 ± 2 bar (183.5 ± 2.1 kgf/cm2, 2500 ± 29 lbf/in2) | p. 329 |
JCB 714, 718, 714 Dumper Truck, 718 Dumper Truck Common Problems This Manual Covers
JCB 718 Articulated Dump Truck loses drive or shifts erratically under heavy loads on steep grades
Check transmission error codes. Drain and fill the transmission with exactly 37 litres (8.1 UK gal) of approved oil. Inspect the propshaft connections and torque the flange bolts to 55 - 65 Nm (40 - 47.5 lbf ft) as shown on page 300.
Manual Section: Transmission Error Codes (Functional Testing)Service brakes feel spongy and low pressure warning switch triggers during daily operation p. 302
Test the brake circuit pressure. Verify the pressure regulator cut-in setting reads 140 bar (2030 lbf/in2) on page 302. Inspect the service brake pads and replace them immediately if thickness drops below the 2 mm (0.08 in) minimum limit noted on page 322.
Manual Section: BrakesSteering cylinder response feels heavy or delayed when articulating the frame completely p. 335
Inspect the steering circuit for internal leaks. Secure the hydraulic steering unit mounting bolts to 45 Nm (33 lbf ft) as directed on page 335. Check the cap screws and torque them to 31 Nm (22.9 lbf ft) according to the specifications on page 339.
Manual Section: SteeringSuspension fails to adjust to load changes and triggers an active S1 error code p. 383
Read the fault codes on page 383. Verify the S1 code indicates no signal is detected from the self levelling suspension switches to the EMS. Inspect the switch wiring harnesses for damage and test the self-levelling suspension switches before replacing the main suspension valve.
Manual Section: Hydraulic Suspension Fault CodesFrequently Asked Questions
What do JCB 714/718 error codes mean?
The manual provides detailed tables explaining the meaning of various fault codes for both the transmission system and the hydraulic suspension system. For instance, a transmission fault code 11 indicates a 'Logical error at gear range signal', while a suspension fault code S1 signifies 'No signal is detected from the self levelling suspension switches to the EMS'. Each entry includes the fault detected, possible causes, and recommended actions to address the issue.
What are the replacement specifications for hydraulic filters?
The hydraulic filter for the return line has a filtration size of 10 Micron. The manual provides a procedure for changing the hydraulic filter element, which can be found on page 81.
What are the replacement specifications for fuel filters?
The manual provides a procedure for changing the fuel filter element on page 71. It also notes that new filter elements should be filled with fuel before fitting to assist with priming. No specific filtration size is mentioned.
How do you fix JCB 718 Articulated Dump Truck loses drive or shifts erratically under heavy loads on steep grades?
Check transmission error codes. Drain and fill the transmission with exactly 37 litres (8.1 UK gal) of approved oil. Inspect the propshaft connections and torque the flange bolts to 55 - 65 Nm (40 - 47.5 lbf ft) as shown on page 300.
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 with an excellent OCR layer, allowing you to search and copy all text. Text quality is consistently crisp and easy to read throughout. Diagrams and illustrations are raster images, but they are generally clear with readable labels, though some may appear slightly less sharp when highly zoomed. Pages are clean with minimal scan artifacts or skewing. There are a few blank pages, indicated by asterisks in the table of contents, which serve as intentional placeholders.
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