Sany SY155U Hydraulic Excavator Repair Service Manual
Excavator Model: SY155U
Publication: Sany Service Manual
Language: English
Format: PDF
- Sany SY155U Hydraulic Excavator Repair Service Manual – 588 Pages
Electrical and Hydraulics Schematics is included.
Repair Manual Table of Content:
- Introduction
- Shop Safety
- Specifications
- Structure and functions
- Standard Values
- Testing and adjusting
- Troubleshooting
- Disassembly and assembly
- System Schematics
How to Read the Manual
● Some attachments and optional parts in this shop manual may not be delivered to certain areas. If one of them is required, consult Sany distributors.
● Materials and specifications are subject to change without notice.
Sany SY155U Hydraulic Excavator Repair Service Manual organization
This manual contains the necessary technical information for services performed in a workshop. For ease of understanding, the manual is divided into the following sections.
This technical workshop manual delivers all the essential details for maintaining, servicing, and troubleshooting your equipment. It features clear illustrations, system schematics, and full repair procedures written by factory technicians.
Every section—from engine rebuild to hydraulic testing—is carefully explained with professional precision. By following the manufacturer’s recommended methods, you’ll reduce downtime and ensure your machine operates safely and efficiently. Ideal for maintenance professionals and heavy equipment owners who demand reliability, this manual is your trusted companion for every repair.







