Description

Daewoo B16X, B18X, B20X 2000 Service Manual

If you’re troubleshooting a Daewoo B16X, B18X, or B20X bus, the aftermarket garbage won’t cut it. I’ve seen techs chase ghosts because some third-party reprint had the wrong drive motor resistance values. Daewoo B16X, B18X, B20X 2000 Service Manual is the OEM book from the factory—460 pages of what Daewoo actually publishes. This is the same manual the dealer techs had in 2000. No guessing, no summaries. You get the real contents list (SB4041E00), torque specs (SB2004E00), and safety warnings (SB2003E00) right up front.

Drive and Control System: MicroController Control Systems

The SB4040E00 section is where the brains of this bus live. Inside you’ll find component measurements for the control panel layout, console, contactors, direction switch, and transistor connections. The current measurement specs are on page 63—that’s where the Electrical System Adjustments start. Don’t skip the Built-In Diagnostic Operation subsection; it will tell you exactly how to pull fault codes from the logic unit without any fancy scan tool. The manual also covers the electric brake plugging circuit and thermal protection circuits. If you need to understand how the bypass circuit works during a controller failure, it’s all there.

Power Train Disassemble and Assembly Procedures

Get into SB4042E00 for the drive axle, final drive, and motor. This section includes the brake cable and hydraulic brake connection steps, plus replenishing the transmission fluid. The torque specs for wheel mounting and drive motor bolts are listed under General Tightening Torques—use those numbers, not what you “feel” is right. The disassembly sequence for the drive axle is laid out step by step, with special service tools listed. You’ll also find armature terminal tests and brush life estimates so you know when to swap out worn brushes instead of chasing intermittent failures.

Does This Manual Cover the Brake and Steering Systems?

Yes. The Vehicle Systems section (SB4043E00) covers master cylinder bleeding, parking brake control group adjustment, pedal adjustment, steer axle stop adjustment, and wheel bearing adjustment. The hydraulic system air removal for lift cylinders and tilt cylinders is spelled out. For pressure checks on the relief valve and steering system, the exact test points and gauge requirements are given. If you’re dealing with a steering system air lock, the manual walks you through the purging process without wasting fluid.

3 Troubleshooting Sections for Common Failures

The manual doesn’t give you one generic troubleshooting list. It gives three dedicated sections: one in the Drive and Control System (SB4040E00) for electrical fault detection, one in Power Train (SB4042E00) for drive motor and transmission issues, and one in Vehicle Systems (SB4043E00) for brake, electric motor, hydraulic valve, and mast problems. Each starts with visual checks and then moves to operational checks during running tests. The On Board “Run Time” Diagnostics subsection in SB4040E00 is worth memorizing if you work on these buses regularly.

Get the Hydraulic Pump Motor Test Steps

Hydraulic pump motor problems are common on these machines. SB4043E00 includes armature tests, brush holder tests, commutator inspection, and thermal switch (thermostat) tests. The brush life estimate formula is printed right in the manual—measure the brush length, compare to the wear limit, and calculate remaining hours. The manual also covers relief valve pressure checks for the hydraulic system and tilt cylinder adjustments. Don’t skip the hydraulic control valve troubleshooting; stuck spools will kill your cycle times.

Before you crack any line, read the safety warnings on page 2. That page lists basic precautions like using jack stands, wearing protective glasses, and blocking forks. The manual is blunt about it because Daewoo doesn’t want you dead.

Does this manual cover all three models (B16X, B18X, B20X)?

Yes, it covers all three from the 2000 model year.

Are wiring diagrams included?

Yes. The Electric System Schematic (SB4046E00) and Hydraulic System Schematic (SB4045E00) are part of the manual. Wire colors and connector pinouts are factory-spec.

Where can I find the final drive torque values?

Torque specs are in the Power Train specifications section under “General Tightening Torques” and “Wheel Mounting.” Values are in ft-lbs. Also check SB2004E00 for general fastener torque. Do not mix metric and imperial bolts.

What does the “Components Measurements” section actually list?

This subsection (part of SB4040E00) gives resistance, voltage, and current measurements for every electronic component in the control system: contactor coils, direction switch contacts, transistor junctions, current sensor output, and the DC-DC converter. If you suspect a bad transistor or an open contactor, the manual tells you the exact ohms you should see between pins. For example, the flyback diode test procedure is spelled out stepwise. This is the kind of detail that saves you from throwing parts at an electrical ghost.

Track down the entire factory manual at AutoRepairManuals and access the factory manual to your workstation. Your bay will thank you.

• Daewoo Service Manual Contents and Notice SB4039E”>Daewoo Service Manual Contents and Notice SB4039E
• DAEWOO Service Manual Contents Oct. 2002″>DAEWOO Service Manual Contents Oct. 2002
• Daewoo Musso Service Manual – Factory OEM Specs for 1465-Page Workbench”>Daewoo Musso Service Manual – Factory OEM Specs for 1465-Page Workbench

For background on the engine principles used in these buses, see Internal Combustion Engine”>Internal Combustion Engine. The transmission section references final drive ratios similar to those explained in Manual Transmission”>Manual Transmission.