Getting a broken excavator back on the job site starts with the right specs. All 316 pages of this JCB JS110, JS130, JS150LC Service Manual PDF (OEM #9803/6100) focus on giving you exactly that. Open this factory guide to find complete hydraulic schematics, detailed electrical circuit diagrams, and step-by-step track gearbox dismantling procedures. You get everything required for heavy line work, including full troubleshooting charts for the machine controls and complete torque tables to properly rebuild the undercarriage. Verify your piston-to-bore clearance stays within the 0.06 mm allowable limit before locking down those track gearbox mounting bolts to exactly 267-311 Nm. A dead machine eats into your profit margin. Download this bookmarked digital file, pull it up on your shop laptop, and start turning wrenches with confidence.
What's Inside This JCB JS110, JS130, JS150LC Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-18 | Machine Identification, Torque Settings, Service Tools, Sealing and Retaining Compounds |
| Care & Safety | 19-25 | Safety Notices, General Safety, Operating Safety, Maintenance Safety |
| Optional Equipment | 58-59 | Rockbreaker, Calibrating the Engine Speed Control |
| Electrics | 60-79 | Technical Data Electrics, Engine Electrics Batteries, Systems Control Monitor, Circuit Diagram Electrics JS110, 130, Circuit Diagram Electrics Js 150 |
| Schematic Hydraulic Circuit | 81-91 | Technical Data |
| Fault Finding JS150LC | 92-101 | Fault Finding Js 110, 130 |
| Pressure Testing JS150LC | 102-112 | Pressure Testing Js 110, 130 |
| Hydraulic Pump Dismantling and Assembly | 113-144 | Hydraulic Pump, Sppc Valve, Servo Pump Relief Valve, Cylinder Block, Piston Assembly, Servo Pump Assembly, Regulator Cover, Damper Piston |
| Control Valve Dismantling and Assembly | 145-160 | Control Valve, Swing Side Control Valve, Main Relief Valve, Auxiliary Relief Valve, Low Pressure Relief Valve, Rotary Coupling |
| Swing Motor Dismantling and Assembly | 161-190 | Rotary Coupling Dismantling and Assembly |
| Servo Hand Control Valves Dismantling and Assembly | 191-200 | Servo Hand Control Valves, Rams |
| Rams Dismantling and Assembly | 201-206 | Boom, Dipper and Bucket Rams, Hook Spanners, Torque Settings (JS110), Torque Settings (JS130), Torque Settings (JS150LC), Ram Piston Head Nut |
| Transmission | 207-278 | Track Gearbox Removal and Replacement, Track Gearbox Dismantling and Assembly Js 110/130, Track Gearbox Dismantling and Assembly Js 150LC |
| Brakes | 279-280 | Track Brakes Pressure Testing, Track Brakes Dismantling and Assembly, Swing Brakes Dismantling and Assembly |
| Track & Running Gear | 281-312 | Idler Wheel and Recoil Unit, Grease Cylinder, Drive Sprocket, Top Roller, Bottom Roller |
| Engine | 313-316 | Technical Data |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track gearbox mounting bolts torque | 267-311 Nm (197-230 lbf ft) | p. 213 |
| Piston to bore clearance (allowable) | 0.06 mm (0.02 in) | p. 125 |
| Shoe/ball backlash (allowable) | 0.4 mm (0.02 in) | p. 125 |
| Control Valve mounting bolts torque | 167 to 177 Nm (123 to 132.2 lbf. ft.) | p. 145 |
| Main Relief Valve plug 2 into cap 1 torque | 78.5 to 88.3 Nm (57.9 to 65.1 lbf. ft.) | p. 155 |
| Electrolyte level above plates | 6mm (0.25 inch) | p. 33 |
| Battery minimum voltage during high rate discharge test | 9 volts for 10 - 15 seconds | p. 62 |
| Insufficient swing motor torque (diagnostic action) | apply servo pressure of 19.6 bar (284 lbf/in2) to the brake release port. Try to rotate shaft with a torque of approximately 4.8 - 9.8 Nm (3.6 - 7.2 ft. lbs.) | p. 95 |
| Hydraulic pump output low / pressure does not increase (diagnostic action) | Check hydraulic pump and control valve. Renew as required. | p. 92 |
| M6 Bolt Torque (Strength Grade 8.8) | 8.04 Nm (5.9 lbf ft) | p. 4 |
| Engine Oil Capacity | 13.8 litres (3 UK gal) | p. 27 |
| Track Gearbox Oil Capacity | 2 x 2.5 litres (2 x 0.55 UK gal) | p. 27 |
JCB JS110, JS130, JS150LC Common Problems This Manual Covers
JCB JS110 hydraulic pump output low under load and bucket curl feels weak. p. 92
Inspect the main hydraulic circuit components detailed on page 92. Remove the pump and measure the piston to bore clearance. Replace parts if clearance exceeds 0.06 mm (0.02 in) as shown on page 125. Torque the P63 pump bolts to 176.5 Nm (130.2 lbf. ft.) upon reassembly.
Manual Section: Hydraulic System Fault Finding (JS110,130)Engine turns over very slowly in cold weather or will not start at all. p. 62
Test the battery during a high rate discharge to ensure voltage stays above 9 volts for 10 to 15 seconds. Check page 62 for testing procedures. Inspect the cells and verify the electrolyte level sits exactly 6mm (0.25 inch) above the plates as instructed on page 33.
Manual Section: ElectricsSwing motor lacks rotational power when working on an incline or rotating a heavy load. p. 95
Apply a servo pressure of 19.6 bar (284 lbf/in2) to the brake release port. Try to rotate the shaft with a torque wrench set to 4.8 to 9.8 Nm (3.6 to 7.2 ft. lbs.). Refer to page 95 for full swing motor diagnostic procedures.
Manual Section: Hydraulic System Fault Finding (JS110,130)Hand control valve sticks intermittently when releasing the joystick from a fully engaged position. p. 195
Disassemble the servo hand control valve and measure the spool. Replace the spool when sliding contact surfaces are worn 0.010mm (0.0008in) more than the non-sliding faces as noted on page 195. Torque the main relief valve plug to 78.5 to 88.3 Nm during reassembly on page 155.
Manual Section: HydraulicsFrequently Asked Questions
What are the replacement specifications for hydraulic pump components?
The manual provides conditions for replacement for various hydraulic pump components. For example, for Piston (P9), replacement is required if rubbing surfaces have deep scratches or are rough, or if there is excessive clearance between the piston and cylinder block. For Oil Seal (P20), renew if damage to the lip is apparent or after 3000 hours of operation. The bearings (P15, P16) should be renewed after 3000 hours of operation or if any slight damage is noticed on contact surfaces.
What are the replacement specifications for hydraulic control valves?
The manual specifies conditions for replacement for hydraulic control valve components. For Main Relief Valve components (e.g., sleeve 3, main poppet 4), renew the relief valve if any abnormal parts are found, or if the seat surface is not defect-free, or if there are scratches or indentations on the outer surface. For Auxiliary Relief Valve components, renew if any abnormal parts are found.
How do you fix JCB JS110 hydraulic pump output low under load and bucket curl feels weak?
Inspect the main hydraulic circuit components detailed on page 92. Remove the pump and measure the piston to bore clearance. Replace parts if clearance exceeds 0.06 mm (0.02 in) as shown on page 125. Torque the P63 pump bolts to 176.5 Nm (130.2 lbf. ft.) upon reassembly.
How do you fix engine turns over very slowly in cold weather or will not start at all?
Test the battery during a high rate discharge to ensure voltage stays above 9 volts for 10 to 15 seconds. Check page 62 for testing procedures. Inspect the cells and verify the electrolyte level sits exactly 6mm (0.25 inch) above the plates as instructed on page 33.
What format is this manual in?
A 316-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 manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Does this JCB JS110, JS130, JS150LC manual include hydraulic schematics?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
Document Quality
This is a scanned service manual. You can search and copy the full text due to an underlying OCR layer, though some original text is slightly faded. Diagrams and illustrations are raster images, which can appear a bit blurry when magnified, but their labels are readable. Page condition is generally clean, with occasional minor skewing, faint background discoloration, or small scan speckles. The document includes several blank pages, typically at the end of sections.
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