Compact and utility
6-10 t: 306/308, PC56/70, ZX60/75, SY60/75, XE60/75, R60/75, DX60, EC60, SK60/75
Used Excavator Maintenance Manual Library: Free PDF Field Guides
Independent field library · 9 bilingual PDF guides
Used Excavator Maintenance Manual Library: Free PDF Field Guides
Find the correct used excavator maintenance guide by brand, model family and working size. Each download provides a safe service workflow, comparison-based troubleshooting, repair records and the official source required for serial-specific values.
Start with machine identity, not the symptom
Before choosing a procedure, record the complete model, suffix, serial prefix, engine plate, controller label and regional configuration. The same base model can contain different pumps, electronics, filters and emissions equipment.
Find a guide by operating size
Mid-size
12-18 t: 312/315, PC120/130/160, ZX120/135/160, SY135/155, XE135/150, R140/150, DX140/160, EC140/160/180, SK120/140/150
Core contractor class
20-26 t: 320/323/325, PC200/210/220/240, ZX200/210/240, SY205/215/245, XE200/215/225/240, R210/220/225, DX225/255, EC210/220/240, SK200/210/220
Production class
30-40 t: 330/336/340, PC300/350/360/400, ZX300/330/350, SY335/365/375, XE300/335/370, R300/330/360, DX300/340/380, EC300/350/380, SK300/330/350
Large excavation
45 t and above: 349/374/390, PC450+, ZX470/490, SY485/550, XE490/550, R480/520, DX480/520, EC480/550/700, SK460/500/520
Browse the library
Cat SIS2GO
CAT
Separate C, D, D2, GC and Next Generation information before using fault codes, hydraulic tests or parts data.
Covered model families
- 306 / 307 / 308
- 312 / 315 / 318
- 320 / 323 / 325
- 330 / 336 / 340
- 349 / 374 / 390
My Komatsu
KOMATSU
The -6, -7, -8, -10 and -11 suffix is part of the machine identity and changes control, engine and hydraulic information.
Covered model families
- PC56 / PC60 / PC70 / PC78
- PC120 / PC130 / PC160
- PC200 / PC210 / PC220 / PC240
- PC300 / PC350 / PC360 / PC400
- PC450+
Global e-Service
HITACHI
Confirm ZAXIS generation and regional G specification before matching controllers, engines, alarms or pump-regulator tests.
Covered model families
- ZX60 / ZX70 / ZX75
- ZX120 / ZX130 / ZX135 / ZX160
- ZX200 / ZX210 / ZX225 / ZX240
- ZX300 / ZX330 / ZX350 / ZX360
- ZX470 / ZX490
MySANY
SANY
C, H, Pro and regional Tier variants can change the engine, display, controller, harness and filter set.
Covered model families
- SY60 / SY75
- SY135 / SY155
- SY205 / SY215 / SY245
- SY335 / SY365 / SY375
- SY485 / SY550
XCMG Global Service System
XCMG
Domestic and export machines can use different engines, controllers, emissions packages and component suppliers under one XE name.
Covered model families
- XE60 / XE75
- XE135 / XE150
- XE200 / XE215 / XE225 / XE240 / XE260
- XE300 / XE335 / XE370 / XE380
- XE490 / XE550
HD Hyundai dealer support
HYUNDAI
Keep R-series -7/-9 and HX-series documentation separate when decoding alarms or ordering electronics.
Covered model families
- R60 / R75 / HX60
- R130 / R140 / R150 / HX140
- R210 / R220 / R225 / R260 / HX220
- R290 / R300 / R330 / R360 / R380
- R450 / R480 / R520 / HX480 / HX520
MY DEVELON
DOOSAN / DEVELON
Map Daewoo, Doosan and DEVELON branding to the exact DH, Solar or DX serial and controller generation.
Covered model families
- DH55 / DH60 / DH80 / DX60
- DH150 / DX140 / DX160
- DH215 / DH220 / DH225 / DH258 / DX225 / DX255
- DH300 / DH370 / DX300 / DX340 / DX380
- DX420 / DX480 / DX520
Volvo CareTrack / dealer
VOLVO
B, C, D, E and regional variants change engines, electronics, emissions and hydraulic control strategies.
Covered model families
- EC55 / EC60 / ECR88
- EC140 / EC160 / EC180
- EC200 / EC210 / EC220 / EC240 / EC250
- EC300 / EC350 / EC360 / EC380
- EC460 / EC480 / EC550 / EC700
KOMEXS / KOBELCO support
KOBELCO
Generation, LC/SR configuration and serial prefix determine the controller, engine and hydraulic procedures.
Covered model families
- SK55 / SK60 / SK75
- SK120 / SK130 / SK140 / SK150
- SK200 / SK210 / SK220 / SK230 / SK260
- SK300 / SK330 / SK350 / SK380
- SK460 / SK500 / SK520
What every guide helps the workshop decide
Engine and cooling
Separate fuel, air, derate and cooling faults using cold/hot evidence.
Hydraulic system
Compare pilot supply, command, pressure, flow and real mechanical load before adjustment.
Travel and swing
Compare left/right behavior, final-drive oil, case drain, noise and braking.
Electrical control
Save the code and event condition; verify power, ground, harness and network first.
Undercarriage and structure
Measure wear and cracks; turn findings into repair, monitor or stop decisions.
Use the download in four stages
Identify
Lock model, suffix, serial, configuration and the official publication revision.
Reproduce
Record cold start, hot cycle, load, temperature and the exact event that creates the complaint.
Compare
Use before/after and left/right comparisons before replacing parts.
Close
Document parts, labor, post-repair test, open defects and a signed release decision.
These are independent field guides, not copied OEM shop manuals
The downloads intentionally do not publish torque values, relief pressures, oil quantities, wiring diagrams or disassembly steps. Those values can change by serial number and must come from the manufacturer or an authorized dealer. This keeps the library useful without encouraging a technically wrong repair.
Official manual and service access
Use the links in each card to obtain the current manufacturer publication. Keep the document number and revision in the repair order.
Maintenance library questions
Are these the manufacturer's workshop manuals?
No. They are original YUANJIAN field guides for planning, troubleshooting and documentation. Serial-specific technical procedures must come from the OEM.
Why is the serial number required?
A base model may have several engines, controllers, hydraulic configurations and regional emission packages. The serial prefix prevents the wrong procedure or part from being selected.
Are the PDFs really bilingual?
Yes. Pages 1-3 are English and pages 4-6 are Spanish in every brand guide.
Can I use one guide for every excavator size?
Use the brand guide to organize the work, then use the size and exact generation to set tooling, lifting, test and safety requirements.
Do the guides include maintenance intervals?
They provide work triggers and evidence requirements. Exact intervals, fluid grades and quantities must be confirmed in the OEM operation and maintenance manual.
Can a buyer request a model not listed?
Yes. Send the full model and serial plate. The library will be expanded by verified model families rather than guessed specifications.
Published and reviewed: 18 August 2026 · YUANJIAN MACHINERY INTERNATIONAL TRADING LIMITED