Description

Doosan DX55 Excavator Service Manual

Doosan Excavator DX55
Format: PDF
Language: English
Publication No: K1038080E
Serial Number: 50001 and Up

Doosan DX55 Excavator Service Manual – 842 Pages

How to Use The Doosan DX55 Excavator Guide Manual:

This manual provides information for servicing the DX55 Doosan Excavator. All service procedures are broken down into detailed steps, listed in their recommended sequence. The manual uses both photographs and drawings to help locate and itemize components. The table of Contents on the preceding pages is your best tool for finding the service procedure you need. Be certain to observe all Safety information included in these pages.

A schematic of each of the major engine systems is provided at the beginning of the section of the manual devoted to troubleshooting and repairing that particular system.

Basic safety precautions are list in the Safety section of the Doosan DX55 Excavator Service Manual. Additional safety precautions are list in the Safety section of the owner/operation/maintenance publication. Specific safety warnings for all these publications are provided in the description of operations where hazards exist. WARNING labels have also been put on the product to provide instructions and to identify specific hazards.

DOOSAN DX55 Instruction Table of Content:

Safety
Track Excavator Safety………………………………………………………………. SP001478
Specifications
Specification for DX55 ……………………………………………………………….. SP001479
General Maintenance
General Maintenance Procedures……………………………………………….. SP000016
Standard Torques……………………………………………………………………… SP000813
Upper Structure
Cabin ………………………………………………………………………………………. SP001480
Swing Bearing…………………………………………………………………………… SP001551
Lower Structure and Chassis
Track Assembly ………………………………………………………………………… SP001481
Engine and Drive Train
Engine……………………………………………………………………………………… SP001434
Drive Coupling (Main Pump)……………………………………………………….. SP001482
Hydraulics
Accumulator……………………………………………………………………………… SP000028
Center Joint (Swivel)………………………………………………………………….. SP001483
Cylinders………………………………………………………………………………….. SP001484
Swing Motor……………………………………………………………………………… SP001485
Travel Motor……………………………………………………………………………… SP001486
Main Control Valve ……………………………………………………………………. SP001487
Main Pump……………………………………………………………………………….. SP001488
Remote Control Valve (Work Lever / Joystick) ………………………………. SP001489
Dozer Valve ……………………………………………………………………………… SP001490
Pedal Valve………………………………………………………………………………. SP001491
Hydraulic Schematic (DX55)……………………………………………………….. SP001492
Electrical System
Electrical System………………………………………………………………………. SP001493
Electrical Schematic (DX55) ……………………………………………………….. SP001494
Attachments
Boom and Arm………………………………………………………………………….. SP001495
Bucket……………………………………………………………………………………… SP001496

Doosan DX55 Manual Instruction Extract:

Pinion Clutch Assembly

Manually rotate the pinion clutch assembly in the drive direction (Figure 366). It should rotate freely in the drive direction and is locked by turning it in the opposite direction.

Replace the pinion clutch assembly if the results are different.
Slide the pinion clutch assembly on the shaft. It should slide smoothly on the shaft (Figure 367).

Rust, too much grease or damage could prevent the pinion clutch from sliding smoothly. If the pinion clutch assembly does not slide smoothly, clean the shaft and pinion clutch assembly or replace the damaged component.
Ball Bearing Inspection

Rotate each ball bearing while holding the pinion clutch assembly (Figure 368). Replace the ball bearing if it does not rotate smoothly or has excessive play.