1997–2000 Daewoo Nubira Service Manual

• Coverage and fitment: The engine article covers the 1999-2002 Daewoo Nubira 2.0L DOHC. The separate overhaul article covers 2001-2003 Hydra-Matic 4T40-E and 4T45-E units, while its application chart assigns the 2001-2002 Nubira 2.0L specifically to the 4T40-E.
• Engine repair procedures: Covers timing-belt inspection, adjustment, removal, and installation; cylinder-head and camshaft service; oil-pump testing and overhaul; piston and connecting-rod work; crankshaft assembly; manifold service; and complete engine removal and installation.
• Transaxle overhaul procedures: Follows complete teardown and reassembly through the channel plate, valve body, oil pump, sprocket-and-drive-link system, clutch packs, bands, sprag and roller clutches, planetary carriers, differential/final drive, servos, sensors, seals, and torque converter.
• Inspection and setup data: Includes component-specific torque tables, engine wear limits and clearances, cylinder-head and valve inspection data, oil-pressure testing, bearing-clearance checks, transaxle end-play limits, and selective thrust-washer and clutch-backing-plate charts.
• Illustrated reference: Provides 103 numbered figures - 54 for the engine and 49 for the transaxle - including exploded assemblies, component locators, seal and thrust-bearing orientation views, fluid-passage maps, air-check points, and four dedicated tightening-sequence figures.
• Document format: A 154-page PDF set in total - an 81-page engine file and a 73-page transmission-overhaul file. The substantive articles end on pages 59 and 54, respectively, followed by blank trailing pages in each source PDF.

This paired engine and transaxle repair reference concentrates on internal mechanical work rather than routine owner maintenance. It is suited to experienced technicians and rebuilders who have powertrain support equipment, a holding fixture or overhaul stand, compressed air, precision measuring tools, and the specified pullers, installers, and spring compressors.

Engine and Transaxle Architecture

The engine material identifies the Nubira engine-number format and plate location, then maps the upper and lower assemblies from the aluminum cross-flow cylinder head through the crankshaft, pistons, timing drive, oil pump, manifolds, and engine mounts. System descriptions explain crankshaft oiling, timing-belt synchronization of the crankshaft and dual overhead camshafts, the pump pressure-regulator circuit, and the intake manifold's four long ports and inertial supercharging effect.

Repair coverage moves from on-vehicle work into full bench overhaul. It includes cylinder-head removal, cleaning, flatness inspection, valve and spring inspection, valve grinding, valve-guide reaming by service code, seat cutting, stem-seal installation, and camshaft-cap sequencing. The bottom-end material covers piston and rod inspection, ring fit and orientation, crankshaft and connecting-rod bearing checks with gauging plastic, rear-seal installation, and final reassembly. Named service equipment includes the KM-470-B angle torque gauge, J-28467-B engine support, KM-498-B/KM-135 oil-pressure test setup, KM-348/KM-653 valve-spring tools, and KM-427 piston-pin service set.

Useful engine figures include Timing Belt Routing, Cylinder Head Bolt Tightening Sequence, and Valve Contact Pattern. One important repair trap is called out directly: the intake and exhaust cam gears are interchangeable, but their separate IN and EX timing marks must be indexed correctly or engine damage can result. The oil-pump section also warns that the gear cavity must be primed during assembly to prevent engine damage.

Specification and Assembly Data

The transaxle article starts with identification and application data, then traces the hydraulic and mechanical power path through the torque converter, variable-capacity vane pump, drive sprockets and link, clutch and band units, planetary gearsets, and integral differential. Detailed repair sections cover case and fluid-passage inspection, channel-plate accumulators and check balls, control-valve-body cleaning and reassembly, clutch and sprag air checks, seal sizing, selective end-play setup, axle seals, output/stub-shaft sleeves, oil feed tubes, servos, and final converter installation.

Particularly useful views include the Exploded View of Transaxle Components, Transaxle Case Fluid Passages, and Exploded View of Control Valve Assembly. Tool-specific procedures identify equipment such as the J-23327 clutch spring compressor, J-41229 manual-shaft pin height tool, J-41234 seal guide and sizer, and J-41228 sleeve installer. Installing the manual-shaft pin too deeply can crack the case boss. The visually identical input and reaction internal gears must also remain in their original positions because the manual does not permit interchanging them after they have operated in a vehicle.

The transaxle article is an internal overhaul reference. Daewoo electronic-control diagnosis, lubrication service, and on-vehicle service are referred to separate DIAGNOS