The Caterpillar 355 Excavator Complete Schematic Manual (EFB00001-UP) provides the full electrical wiring diagrams, hydraulic circuit flow diagrams, and connector location references for the CAT 355 large excavator matched to EFB-prefix machines. The 355 is a separate model from the 352 — its hydraulic main pump configuration, swing motor wiring, and electrical system architecture are different. A 352 schematic cannot substitute for the 355 EFB documentation. Without the EFB-matched circuit diagrams, electrical fault diagnosis and hydraulic pressure tracing on this machine require guesswork that costs time and leads to unnecessary component replacement. Download the EFB-matched schematic from Heavy Equipment Manual. The CAT Service Manuals Complete Guide explains the complete CAT documentation set. Summary: The CAT 355 Excavator Complete Schematic Manual (EFB00001-UP) covers electrical schematic, hydraulic schematic, connector locations, and circuit flow diagrams for EFB-series CAT 355 large excavators. OEM factory documentation — separate from the 352. Instant PDF download. $30.00 (was $80.00) — 62% off, plus extra 20% off with code FIX20.