CAT Excavator Disassembly & Assembly

What this reference is for

A disassembly-and-assembly reference is not a troubleshooting diagnosis. It tells a qualified technician how an identified component is removed, handled, inspected and installed. A machine with weak hydraulics should not be dismantled merely because a removal manual is available. Establish the problem and document the evidence first.

The 488-page 320GC file inspected here opens with the DKJ machine context and C4.4 engine disassembly material. The selected headings cover oil coolers, the water pump, crankshaft, pistons, cylinder head and ECM removal/installation. The local file is a compilation; chapter applicability can differ. Its size is not proof that it is a complete excavator overhaul manual.

Before work, confirm the actual component and repair scope, the lifting and isolation requirements, replacement seals or single-use items specified by the procedure, cleanliness controls and the checks required after installation. Torque values, timing steps and lifting details must come from the exact current reference and the technician responsible for the repair.

Inside the reference: verified index extract

CAT 320GC / Disassembly & assembly

C4.4 engine / DKJ. 488 pages in the local PDF; page numbers below refer to this file, not every edition.

Oil cooler removal

p. 7

Water pump removal

p. 14

Crankshaft removal

p. 87

Pistons & connecting rods

p. 166

Cylinder head removal

p. 229

ECM removal & installation

p. 471

Reference on opening chapter: UCNR4525-03

Ask for this reference

A useful refurbishment record contains

• Machine and component identity before parts are removed.
• Photos of dismantled parts, measured findings and the agreed replacement list.
• The matched assembly reference and completion checks.
• Working videos and inspection evidence after reassembly, distinct from workshop progress footage.

Related technical questions

Find your model and reference

26 selected records. Checked opening-page identities and page counts are shown where available; each full document still needs serial and edition matching.

26 references

No matching entry in this public selection. Send the model, serial prefix and technical issue so we can check the wider archive.