JCB built the 505-20 Loadall as a rough terrain variable reach truck, and this owner's manual (OEM #9831/5117) stays on that one machine across 280 pages. Operating procedures cover load charts, boom indicator readings, inclinometer use, steer mode selection, and the startup-to-park sequence. Attachment work covers quick-fit carriages, extension jibs, roof truss jibs, hooks, and personnel work platforms, down to connecting and disconnecting hydraulic hoses. The maintenance section lays out pre-start cold checks, service intervals, and fluid capacities for a sharper daily walkaround. Torque the front wheel nuts to 500N·m (369lb.ft.); run your 12.5/80 R18 Solideal tires at 4.3bar (62psi). Factory numbers, not forum guesses. Bookmarked throughout, so it opens fast on a tablet right at the bench.
What's Inside This JCB 505-20 Manual
| System | Pages | Key Topics |
|---|---|---|
| Acronyms Glossary | 12 | Arv Auxiliary Relief Valve, Cesar Construction Equipment Security and Registration, DEF Diesel Exhaust Fluid |
| About the Product | 19-40 | Introduction (General, Name and Address of the Manufacturer, Product Compliance) |
| Operation | 41-136 | Introduction (General), Operating Safety (General, Worksite Safety, Risk Assessment), Walk-Around Inspection (General) |
| Attachments | 137-186 | Working with Attachments, Tool Carrier, Quick-Fit Carriage, Tow Hitches, Jibs, Hooks, Work Platforms |
| Preservation and Storage | 187-192 | Cleaning (General, Preparation), Checking for Damage (General), Storage (General, Put Into Storage, During Storage, Take Out of Storage) |
| Maintenance | 193-248 | Introduction (General, Owner/Operator Support, Service/Maintenance Agreements, Initial Service and Inspection, Obtaining Spare Parts) |
| Technical Data | 249-280 | Static Dimensions (Weights), Performance Dimensions (General, Boom Dimensions and Performance, Towing Weights), Noise Emissions (General, Noise Data) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| ROPS/FOPS Mounting bolts torque | 205N·m (151lb.ft.) | p. 261 |
| Front Wheel Nut Torque | 500N·m (369lb.ft.) | p. 261 |
| Replacement hose specification | same size, standard and pressure rating | p. 239 |
| 12.5/80 R18 SL R4 Solideal Tire Pressure | 4.3bar (62psi) | p. 268 |
| 12.5/80 R18 SL R4 Solideal Maximum Weight | 1,000kg (2,204.60lb) | p. 268 |
| Rear Wheel Nut Torque | 500N·m (369lb.ft.) | p. 261 |
| Grease gun strokes | two strokes | p. 215 |
| JCB Special HP Grease container size | 0.4kg x 24 | p. 255 |
| Minimum operating temperature for proper hydraulic response | above 0°C (32.0°F) | p. 104 |
| Hydraulic warm-up time in cold conditions | at least 10min | p. 104 |
| Fuel Tank Capacity | 75L (20USgal) | p. 255 |
| Engine Oil Capacity (Maximum) | 11.2L (3USgal) | p. 255 |
JCB 505-20 Common Problems This Manual Covers
JCB 505-20 boom responds slowly or stops moving entirely during cold weather startup p. 104
Allow the engine to idle and cycle hydraulic functions gently for at least 10 minutes before loading in cold conditions. Hydraulic oil must be above 0°C (32.0°F) for proper system response (page 104). If sluggishness persists at normal temperatures, check the hydraulic tank level (capacity 48.7L/13USgal) and inspect all hoses for kinks or displaced fittings.
Manual Section: Operation: Operating InstructionsPark brake will not hold the machine on level ground during safety test p. 220
Disengage the park brake at once and hold the machine in position with the drive controls. Do not put the machine to work until the brake test passes. Tag it out and contact your JCB dealer for service.
Manual Section: Maintenance: BrakesHydraulic or auxiliary hoses show cuts, weeping oil, or kinked sections at fittings p. 239
Inspect all hydraulic hoses and auxiliary circuits during the daily walk-around for cuts, abrasion, kinking, or oil weeping at connections. Any replacement hose must match the original in size, standard and pressure rating (page 239). If you find active leaking at a stabilizer leg or auxiliary line, isolate the machine immediately. Never probe a pressurized hydraulic leak with bare hands.
Manual Section: Hydraulic System Check (Condition)Tyre sidewall damage, pressure loss, or loose wheel nuts found during walk-around p. 268
Check all four tyres before each shift for sidewall cuts, embedded objects, tread damage, and correct inflation. Standard 12.5/80 R18 tyres require 4.3 bar (62 psi) (page 268). Inspect all wheel nuts for security; correct torque is 500N·m (369lb.ft.) on both axles (page 261). Replace any tyre showing sidewall bulging or exposed cord before the machine returns to work.
Manual Section: Walk-Around Inspection (General)Warning lights stay on or flash repeatedly on the display after engine startup p. 84
Read the Instrument Panel (page 84) to identify the specific warning when lights stay on or flash after startup. If any light fails to go off, or comes on while the engine is running, stop the engine as soon as it is safe to do so and contact your JCB dealer. Do not race the engine until the oil pressure low light has gone off (page 62).
Manual Section: Operation: InstrumentsFrequently Asked Questions
How to reset JCB 505-20 error codes?
Fault codes appear on the main screen and stay active until you acknowledge them. Press the information button on the instrument panel to clear one.
What are the torque specs for JCB 505-20 wheel nuts?
Both front and rear wheel nuts on the JCB 505-20 torque to 500 N·m (369 lb·ft). On a new machine, or after any wheel has been removed, recheck the nut torques every two hours until they hold steady.
How to clear fault codes on JCB 505-20 Loadall?
When a fault is active, the 505-20 puts a code on the home screen and holds it there until acknowledged. Pressing the information button on the instrument panel clears it.
How will I receive this JCB 505-20 Owner's Manual?
Immediate download of the complete 280-page searchable Owner's Manual. Open it on any device, whether that's a laptop at your desk or a phone out in the field.
Can I print specific sections of this JCB 505-20 Owner's Manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Document Quality
This is a high-quality, native digital PDF document, allowing you to search and copy all text. The text is consistently crisp and easy to read throughout. Diagrams and illustrations are primarily vector graphics, appearing sharp and clear even when zoomed in, with all labels perfectly legible. Pages are clean with no visible scan artifacts, stains, or skewed content. There are several "Notes" pages included as filler.
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