Description

Daewoo BC15T, BC18T, BC20T 2000 Service Manual

You want to fix a Daewoo BC15T, BC18T, BC20T 2000 Service Manual bus without tearing your hair out? Then you need the real thing – the factory-issued 415-page book that the dealership techs used. Aftermarket PDFs with fuzzy diagrams and guessed torque values? Toss them. I’ve been turning wrenches since before OBD-II was standard, and I can tell you nothing substitutes for the OEM print. This manual covers three bus models: BC15T, BC18T, and BC20T, all from the 2000 production year. It’s not a reprint; it’s the original May 2000 service manual contents (form SB2162E01) with all five main sections: Drive and Control System, Power Train, Vehicle Systems, and more.

Torque Specs and Fastener Data – Page 2

On page 2 you’ll find the torque specifications table. Not a range. Not “tighten till it feels right.” Factory numbers for wheel mounting, drive motor fasteners, and final drive bolts. If you skip this page and guess, you’ll be buying new threads – or worse, losing a wheel at highway speed. The manual also lists general tightening torques for the hydraulic system and the motor-transmission unit. I’ve seen enough techs snap M12 bolts because they didn’t bother with the spec sheet. Don’t be that guy.

MicroController Control System – Full Diagnostics

Section SB2163E00 dives into the drive and control system – all 200-plus pages of it. You get a full breakdown of the MOSFET module, the logic unit, and the built-in “Run Time” diagnostics. Need to access stored error codes? The manual tells you step-by-step how to pull them without a dealer scan tool. The “Self Diagnostics (Lift Truck in Operation)” section shows you exactly what the controller monitor displays when a sensor fails. Every voltage check point is listed. Every component test – contactor coils, diode bridges, accelerator potentiometer – has a dedicated procedure. This is not a generic wiring diagram; it’s the Daewoo schematic with labeled terminals and expected resistance values.

Power Train Disassembly – Axle and Brake Work

Section SB2164E00 covers the drive axle, final drive, and brake system. If you’re rebuilding a BC20T’s transmission, you’ll need the armature terminal test procedure (page 164 of the PDF). The manual walks you through brush life estimation, commutator inspection, and thermal switch testing. The “Disassembly And Assembly” chapter for the drive axle includes exact bearing preload specs. I’ve had to redo a final drive because the aftermarket manual left out the shim stack order. This OEM manual shows every step with exploded views and callouts.

Hydraulic System – Lift, Tilt, Steering

Section SB2165E00 is the vehicle systems manual. It covers the hydraulic pump motor circuit, lift control circuit, tilt and auxiliary control, and the power steering circuit. Need to adjust the tilt speed? The “Tilt and Auxiliary Speed Adjustment” test is right there. There’s also a full parts breakdown for the steer axle, steering gear, and cylinders. The master cylinder and brake system are explained with cross-section diagrams. If you’re chasing a leak on the sideshift cylinder, the manual shows the O-ring sizes and seal kit numbers.

3 Reasons to Choose OEM Documentation Over Aftermarket

First, the torque values are verified. Aftermarket spec sheets often copy numbers from a different year or model. Second, the wiring diagrams are exact. I’ve seen “generic” Daewoo bus schematics that swapped the DC-DC converter pins – that’ll fry your control board. Third, the safety warnings are specific to this lift truck chassis. On page 3 the manual lists six precautions including “Do not work on any machine supported only by lift jacks.” That’s not filler; that’s a rule that keeps you alive. Don’t trust a third-party copy with missing pages.

Does This Manual Cover the Internal Combustion Engine?

No. This service manual is for the electric drive variant of the BC15T, BC18T, and BC20T buses. The drive system uses a traction motor and a hydraulic pump motor – no diesel engine. If you need engine specs, check the Internal Combustion Engine reference or look at the Manual Transmission details for related mechanical drivelines. But this manual focuses entirely on the electric powertrain, the MOSFET controller, and the hydraulic systems.

Related Manuals for Daewoo Fleet

If you’re working on other Daewoo equipment, these OEM manuals are available:

• Daewoo Musso Service Manual – Factory OEM Specs for 1465-Page Workbench
• Daewoo 661LA, 662NA, 662LA 2000 Service Manual – Factory OEM
• Daewoo 470LC-V 2001 Service Manual – Factory Specs for Excavator Maintenance

FAQ – Common Questions About This Manual

How many pages does the manual have?

415 pages. That includes the index, specs, systems operation, testing, and adjusting sections.

Is this for electric or diesel buses?

Electric drive only. The manual covers the microcontroller control system and hydraulic pump motor – no internal combustion engine content.

What torque specs are included?

Wheel mounting bolts, drive motor fasteners, final drive, hydraulic valve and pump bolts, and steering gear bolts. All listed on page 2 with foot-pound values and metric equivalents. The manual also includes general tightening torques for fasteners used throughout the bus.

Does the manual include the hydraulic system schematic?

Yes. Form number SB2167E00 (within the Vehicle Systems section) contains the complete hydraulic system schematic. It also includes the electric system schematic and the mast system diagrams. The schematics show each valve, cylinder, and hose route with part numbers.

Every time I start a job on a Daewoo electric bus, I pull this manual open to the index and flip to the exact procedure. No guesswork. No wasted hours chasing phantom errors. If you’re serious about keeping your BC15T, BC18T, or BC20T on the road without paying dealer billing rates, get the factory paperwork. Access the Factory Manual from AutoRepairManuals and see what 415 pages of OEM engineering looks like.