Clark TMG12 TMG13 TMG15S TMG15 TMG17 TMG18 TMG20 TMG20X TMG25 EPG 15 18 Forklift Trucks Service Repair Workshop Manual PDF VEHICLE/EQUIPMENT INTRODUCTION: The Clark TMG series of electric forklift trucks represents a proven line of material handling equipment designed for indoor warehouse and distribution center operations. These battery-powered forklifts deliver quiet, emission-free performance while maintaining the lifting and maneuvering capability essential for high-capacity industrial environments. The TMG family spans capacities from approximately 1,200 kg to 2,500 kg, with models including the TMG12, TMG13, TMG15S, TMG15, TMG17, TMG18, TMG20, TMG20X, and TMG25. The EPG 15 and EPG 18 variants share the same electrical architecture with enhancements for specific duty ratings. Their electric motor drive system, hydraulic lifting mechanism, and precision steering make them ideal for loading docks, pallet racking, and narrow aisle handling. SERVICE & REPAIR SCOPE: - Periodic service schedules and planned maintenance inspection forms - Battery service including electrolyte levels, terminal cleaning, and charging procedures - Complete wiring diagrams and switch/sensor diagnostic testing - Electric drive motor overhaul including brush replacement and armature inspection - Lift pump motor and steering pump motor disassembly and reassembly - Contactor specifications, testing, and contact replacement - Motor controller sequence of operations and diagnostic status code interpretation - Controller removal, bench testing, and replacement procedures - Drive axle fluid check and change, bearing inspection, and gear replacement - Wheel and tire mounting specifications and maintenance procedures - Brake system fluid bleed, pad replacement, and master cylinder overhaul - Parking brake adjustment and cable replacement - Steering system relief pressure check, gear overhaul, and column removal - Steer axle and cylinder rebuild with seal kit installation - Hydraulic system pressure checks, main pump removal, and control valve overhaul - Tilt cylinder overhaul, seal replacement, and rod inspection - Mast upright inspection, roller clearance checks, and chain adjustment - Fork and carriage removal, inspection, and reinstallation procedures - Counterweight and overhead guard removal and installation - Complete specification data including nameplate information and decal locations TECHNICAL SPECIFICATIONS: - Models: Clark TMG12, TMG13, TMG15S, TMG15, TMG17, TMG18, TMG20, TMG20X, TMG25, EPG 15, EPG 18 - Drive type: Electric (battery-powered) - Lift motor: DC series wound - Drive motor: DC traction type - Hydraulic system: Main pump with multi-function control valve - Brake system: Hydraulic disc, self-adjusting - Steering: Full hydrostatic power steering - Manual total pages: 576 DIAGNOSTIC INFORMATION: - Forklift will not move: Check battery voltage, inspect contactor contacts, verify controller status codes, test drive motor brushes - Slow lift operation: Test hydraulic system pressure, inspect lift pump motor, check for internal valve leakage - Steer hard or erratic: Check tire pressure, verify hydraulic steering fluid level, test relief valve setting, inspect steer cylinder seals - Excessive brake travel: Check brake fluid level, inspect master cylinder seals, bleed brake hydraulic system - Battery draining quickly: Test battery cell voltages, check for parasitic electrical drain, inspect charger operation - Mast drift when parked: Inspect tilt cylinder seals, check control valve spool for leakage - Jerky acceleration: Test controller acceleration parameter settings, inspect drive motor condition, verify accelerator potentiometer output - Overheating drive motor: Check motor brushes for excessive wear, verify ventilation passage clear, test armature insulation resistance ILLUSTRATIONS & DIAGRAMS INCLUDED: - Complete electrical schematic diagrams with color-coded wire routing - Drive motor exploded views showing commutator, brush holder, and bearing arrangement - Hydraulic system circuit diagrams with valve cross-sections - Mast upright assembly drawings showing roller alignment and shim specifications - Control valve exploded views with spool identification - Tilt and lift cylinder seal kit diagrams - Battery compartment and cable routing illustrations - Steering gear and column assembly exploded views COMPATIBILITY: - Clark TMG12 through TMG25 electric forklift trucks (all variants) - Clark EPG 15 and EPG 18 models - 576 complete pages covering all service sections - PDF format, searchable and printable FILE PROPERTIES: - Format: Searchable PDF (576 pages) - Language: English - Delivery: Instant digital download - Access: Download anytime after purchase