YUANJIAN MACHINERY / TECHNICAL LIBRARY
CAT 320GC Repair & Technical Resources
CAT 320GC reference contents, actual machine evidence and matched technical support.
Look inside the references
Engine chapters and hydraulic diagrams are different
The four previews above come from files opening in the 320 GC DKJ/C4.4 engine context. The troubleshooting compilation also contains C7.1 material. They are not advertised as one complete 320GC overhaul manual. The hydraulic diagram entries below have their own prefixes, including BR4, DKJ, JGY, KTN, LKS, XBJ and ZBT; compatibility needs a full serial-range check.
Find your model and reference
11 selected records. Checked opening-page identities and page counts are shown where available; each full document still needs serial and edition matching.
11 references
CAT 320GC / DKJ YJ-CAT-84B8B2E
CAT 320GC systems operation collection
Opening-page configuration: C4.4 engine / DKJ
59 PDF pagesRequest reference
CAT 320GC / DKJ YJ-CAT-B249B46
CAT 320GC testing & adjustment collection
Opening-page configuration: C4.4 engine / DKJ
107 PDF pagesRequest reference
CAT 320GC / DKJ YJ-CAT-949C0A3
CAT 320GC disassembly & assembly collection
Opening-page configuration: C4.4 engine / DKJ
488 PDF pagesRequest reference
CAT 320GC / DKJ YJ-CAT-EB837B3
CAT 320GC troubleshooting collection
Opening-page configuration: C4.4 engine / DKJ
489 PDF pagesRequest reference
CAT 320GC / BR4 CAT-GC-BR4
320 GC hydraulic diagram catalogue - BR4
Catalogue metadata; edition to confirm
Catalogue entryRequest reference
CAT 320GC / DKJ CAT-GC-DKJ
320 GC hydraulic diagram catalogue - DKJ
Catalogue metadata; edition to confirm
Catalogue entryRequest reference
CAT 320GC / JGY CAT-GC-JGY
320 GC hydraulic diagram catalogue - JGY
Catalogue metadata; edition to confirm
Catalogue entryRequest reference
CAT 320GC / KTN CAT-GC-KTN
320 GC hydraulic diagram catalogue - KTN
Catalogue metadata; edition to confirm
Catalogue entryRequest reference
CAT 320GC / LKS CAT-GC-LKS
320 GC hydraulic diagram catalogue - LKS
Catalogue metadata; edition to confirm
Catalogue entryRequest reference
CAT 320GC / XBJ CAT-GC-XBJ
320 GC hydraulic diagram catalogue - XBJ
Catalogue metadata; edition to confirm
Catalogue entryRequest reference
CAT 320GC / ZBT CAT-GC-ZBT
320 GC hydraulic diagram catalogue - ZBT
Catalogue metadata; edition to confirm
Catalogue entryRequest reference
No matching entry in this public selection. Send the model, serial prefix and technical issue so we can check the wider archive.
Practical technical guides
CAT 320D hydraulics slow or weak?
Separate one-function faults from machine-wide loss of performance.
Main pump or pilot system: what is the difference?
Understand the control path before blaming or buying a pump.
Why is one CAT 320D track slow?
Track-side evidence, travel circuits and final-drive checks.
Which CAT manual matches my serial number?
Model suffix, engine, serial range and document revision.
What should CAT 320GC inspection evidence include?
Serial identity, hours, engine, pump and undercarriage.
From technical information to the actual machine
YUANJIAN MACHINERY INTERNATIONAL TRADING LIMITED
Technical support beyond the machine sale
A direct used excavator supplier in China with our own refurbishment team, real-machine inspection photos and working videos. Customers who buy a used excavator from YUANJIAN receive available, applicable resources and free machine guidance for 5 years after purchase.
Resource access, safety and service terms
Public pages contain original YUANJIAN explanations and selected catalogue metadata. Complete documents are supplied only where available, applicable and permitted. Manufacturer rights remain with their owners; YUANJIAN is not a Caterpillar-authorized service center. These indexed collections can combine engine and machine chapters, languages and revisions. Confirm the complete machine serial number, engine identity and the current procedure before repair.
Five-year guidance covers operation, maintenance questions and troubleshooting communication. It is not a five-year machine warranty and does not include free parts, consumables, freight, on-site labor or repairs. Qualified technicians must perform pressure tests, adjustments, lifting and disassembly using the serial-specific service instructions.