Cat Excavator Hydraulics: Symptoms, Leaks & Contamination
Read five hydraulic symptom explanations, safe inspection principles and contamination-control knowledge on this page. General Cat reference—not a 320D workshop manual.
CAT / Caterpillar
CAT 320D / 320D L Selected Parts Guide: PHX & SPN
Look up 20 selected filter, engine and undercarriage entries directly on YIHUI. Tables distinguish PHX / SPN fitment and new / Reman references; not a complete parts catalogue.