Airman AX20u-3 Mini Excavator Index:

SECTION 1 GENERAL
Group 1 Specification
Group 2 Component Layout
SECTION 2 SYSTEM
Group 1 Hydraulic System
Group 2 Electrical System
SECTION 3 COMPONENT OPERATION
Group 1 Pump Device
Group 2 Swing Device
Group 3 Control Valve
Group 4 Pilot Valve
Group 5 Travel Device
Group 6 Others (Upperstructure)
Group 7 Others (Undercarriage)
SECTION 4 OPERATIONAL PER-
FORMANCE TEST
Group 1 Introduction
Group 2 Engine Test
Group 3 Excavator Test
Group 4 Component Test
Group 5 Standard
SECTION 5 TROUBLESHOOTING
Group 1 Diagnosing Procedure
Group 2 Troubleshooting A
Group 3 Troubleshooting B
Group 4 Electrical System Inspection

SECTION 1 GENERAL INFORMATION
Group I Precautions for Disassembling
and Assembling
Grou 2 Tightening
SECTION 2 UPPERSTRUCTURE
Group 1 Canopy
Grou 2 Counterwei ht
Grou 3 Pum Device
Group 4 Control Valve
Group 5 Swin Device
Group 6 Pilot Valve
Group 7 Solenoid Valve
SECTION 3 UNDERCARRIAGE
Group I Swing Bearing
Group 2 Travel Device
Group 3 Center Joint
Group 4 Track Adjuster
Group 5 Front Idler
Group 6 Upper and Lower Roller
Group 7 Track
SECTION 4 FRONT ATTACHMENT
Group 1 Front Attachment
Group 2 Cylinder
SECTION 5 ENGINE