1976-1990 Skoda 120 105S 105L Service Repair Workshop Manual

This is the COMPLETE Service and Repair Manual for the 1976-1990 Skoda 120 105S 105L Service Repair Workshop Manual. It covers every single detail.

1976-1990 Skoda 120 105S 105L Service Repair Workshop Manual PDF VEHICLE/EQUIPMENT INTRODUCTION: The Skoda 105 and 120 series, produced between 1976 and 1990, were among the most iconic vehicles from Czechoslovakias Skoda Auto company during the Eastern Bloc era. These rear-engine sedans and hatchbacks were derived from the Skoda 100/110 lineage and shared the same fundamental architecture: a rear-mounted, water-cooled inline-four engine driving the rear wheels. The 105S and 105L models featured a smaller 1046cc engine offering economical operation, while the larger 120 series used a 1174cc unit providing improved performance. The simple, robust mechanical design meant these cars were easy to service and repair, a trait that made them enduring favorites in Eastern Europe. The lightweight body, straightforward suspension layout, and uncomplicated electrics continue to attract classic car enthusiasts who appreciate the accessibility of these vehicles for restoration projects. SERVICE & REPAIR SCOPE: - Rear-mounted engine removal and reinstallation procedures - Cylinder head removal and valve clearance setting - Crankshaft main and connecting rod bearing clearance measurement - Clutch cable adjustment, driven plate replacement, and pressure plate overhaul - Four-speed manual gearbox rebuild: synchromesh gear and bearing replacement - Rear axle and differential overhaul: crown wheel setup and oil seal replacement - Semi-trailing arm suspension inspection and swing arm pivot replacement - Front MacPherson strut replacement and coil spring renewal - Twin-circuit braking system service with drum and disc brake overhaul - Brake servo unit replacement and master cylinder rebuild - Carburetor tuning (Jikov or Solex variants), float level setting, and idle mixture adjustment - Distributor timing setup, contact breaker adjustment, and condenser replacement - Alternator charging circuit testing and voltage regulator verification - Cooling system thermostat replacement and water pump overhaul - Exhaust system inspection and replacement - Wiring harness inspection and body earth point cleaning TECHNICAL SPECIFICATIONS: - Engine: Rear-mounted inline-four, water-cooled (OHC) - 105 displacement: 1046 cc - 120 displacement: 1174 cc - Transmission: 4-speed manual, rear-mounted - Front suspension: MacPherson strut - Rear suspension: Semi-trailing arm swing axle - Front brakes: Disc - Rear brakes: Drum - Steering: Rack and pinion (later models) or recirculating ball (earlier) DIAGNOSTIC INFORMATION: - Engine overheating in traffic: inspect cooling fan belt tension, check thermostat opening, flush radiator - Blue smoke from exhaust on deceleration: replace valve stem seals, inspect valve guide wear - Gearbox difficulty selecting first or reverse: inspect clutch release bearing travel, check gearbox selector linkage - Car pulls to one side under braking: inspect brake shoe lining condition, check drum out-of-round, bleed system - Oil leak at engine-to-gearbox joint: rep

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