Part of the Doosan Repair Manuals.
All 621 pages of this Doosan DX35Z Shop Manual PDF (OEM #K1025197E) exist to put your track excavator back to work. Inside: a full hydraulic schematic for the DX35Z, complete electrical wiring diagrams, and step-by-step teardown procedures for the main pump, swing motor, travel motor, main control valve, and cylinders. You also get a standard torque section, swing bearing and track assembly service, and specifications for every system from cabin to bucket. Torque the 1/2-inch split flange bolts to 2.1-2.5 kg-m (15-18 ft lb) and set the track roller hardware at 34.5 kg-m; those numbers come straight off the factory pages. No more chasing hydraulic leaks with forum guesses. Bookmarked and keyword-searchable; pull it up on your phone in the shop, jump straight to the section you need, and start wrenching.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-52 | Track Excavator Safety |
| Specifications | 53-80 | Specification for DX35Z |
| General Maintenance | 81-118 | General Maintenance Procedures, Standard Torques |
| Upper Structure | 119-150 | Cabin, Fuel Tank, Swing Bearing |
| Lower Structure and Chassis | 151-178 | Track Assembly |
| Engine and Drive Train | 179-188 | Drive Coupling (Main Pump) |
| Accumulator | 191-210 | Safety Precautions, Applicable Models, General Description |
| Cylinders | 211-272 | Safety Precautions, Applicable Models, Construction, Internal Construction, Disassembly Procedures, Internal Component Disassembly Procedure |
| Travel Motor | 273-336 | Safety Precautions, Applicable Models, Instruction, Out Line, Structure of Traveling Motor, Features |
| Main Pump | 337-392 | Safety Precautions, Applicable Models, General, Principal Components and Functions, Piston Pump, Valve Assembly and Relief Valve |
| Main Control Valve | 393-472 | Safety Precautions, Applicable Models, Introduction, Outline, Contents of This Manual, Disassembly and Assembly of the Product |
| Remote Control Valve (Work Lever / Joystick) | 473-490 | Safety Precautions, Applicable Models, General Description, Theory of Operation, Tools and Materials, Disassembly |
| Travel Control Valve | 491-524 | Safety Precautions, Applicable Models, About This Operation Manual, Exemption From Responsibility, Overview, Operation |
| Pedal Valve | 525-548 | Safety Precautions, Applicable Models, General Description, Tools and Materials, Disassembly, Assembly |
| Electrical System | 549-595 | Electrical Schematic (DX35Z) |
| Attachments | 596-621 | Working Attachments, Bucket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Torque for split flange connections (1/2" flange size, 5/16" bolt size) | 2.1 - 2.5 kg•m (15 - 18 ft lb) | p. 113 |
| Torque for split flange connections (3/4" flange size, 3/8" bolt size) | 3.0 - 3.7 kg•m (22 - 27 ft lb) | p. 113 |
| Bolt torque | 27 kg•m (200 ft lb) | p. 140 |
| Track Roller (for rubber crawler) Tightening Torque | 34.5 kg•m | p. 173 |
| Lower Roller (for Steel Crawler) Tightening Torque | 34.5 kg•m | p. 173 |
| Engine Rated Power | 27.7 hp @ 2,200 rpm | p. 68 |
| Fuel Tank Capacity | 42 liters | p. 68 |
| Hydraulic Tank Capacity | 40 liters | p. 68 |
| Main Relief Set Pressure | 230 kg/cm2 | p. 68 |
| Operating Weight | 3.7 tons | p. 68 |
| Travel Speed (High) | 4.6 km/h | p. 68 |
| Travel Speed (Low) | 2.6 km/h | p. 68 |
