Description
CLARK EC-60/80 36/48 Volt Overhaul Manual
The CLARK EC-60/80 36/48 Volt Overhaul Manual is a specialized workshop publication designed for servicing, rebuilding and overhauling major components of CLARK electric industrial trucks. The manual is identified as OH-377 and was produced by the CLARK Industrial Truck Division.
Unlike a basic operator manual, this publication focuses on component overhaul procedures, providing technicians with practical information for disassembly, cleaning, inspection, reassembly and component specifications.
| Manufacturer | CLARK |
| Manual Type | Overhaul Manual |
| Manual Number | OH-377 |
| Model | EC-60 / EC-80 |
| Voltage | 36 / 48 Volt |
| Number of Pages | 398 Pages |
| File Size | 42 MB |
| Format | Digital PDF |
| Language | English |
| Primary Content | Component Overhaul, Repair, Inspection & Reassembly |
| Illustrations | Exploded Views, Diagrams & Photographic Procedures |
| Service Groups | 16, 17, 19, 20, 23, 25, 26, 29, 30, 31, 32, 34, 40 |
Comprehensive Component Overhaul Information
The manual’s table of contents covers a broad range of CLARK truck systems. The documented procedures include steer pump motor overhaul, drive motor overhaul, A.C. drive & pump motor overhaul, pump motor overhaul, drive motor maintenance, contactor overhaul, SCR control systems, drive axle overhaul, brake master cylinder overhaul, disc wheel brake overhaul, power steering gear, power steering pump and cylinder overhaul, hydraulic pump and valve overhaul, hydraulic system schematics, accumulators, tilt cylinders and upright lift cylinders.
Electric Motor Overhaul Procedures
A major portion of the sample is dedicated to Group 16 electric motor overhaul. The steer pump motor section includes an exploded component view followed by detailed disassembly, cleaning and inspection, reassembly and specifications.
The illustrated procedures show technicians how to remove motor components, inspect brushes, commutators, bearings, windings, field coils and other internal parts, followed by reassembly procedures. The manual also provides technical specifications for steer pump motors, including voltage, brush spring pressure, field coil resistance, armature resistance, stall torque and rotation information.
Drive Motor Overhaul
The Drive Motor Overhaul section provides exploded views of the drive motor and identifies individual components such as the armature, bearings, drive-end seal, fan, pole shoes, brush kit, brush holder, commutator end frame and motor body.
Illustrated disassembly instructions are provided using photographs and numbered steps. The sample demonstrates procedures for removing the brush assembly, end frame, bearing, armature and field coils, giving technicians a visual reference during overhaul work.
Electrical Controls & Contactors
The contents include dedicated overhaul information for 200 AMP and 100 AMP contactors, as well as G.E. electrical contactors and SCR control systems. The manual also includes identification information for filters and diode blocks and specific sections covering G.E. 300 and G.E. 310 SCR controls.
Drive Axle, Brake & Steering Systems
Mechanical overhaul coverage extends to the drive axle, brake master cylinder and disc wheel brakes. Steering-related sections include the Char-Lynn power steering gear, power steering motor, spool valve, power steering cylinder and power steering pump.
Hydraulic System Overhaul
The manual also covers important hydraulic components, including the hydraulic pump, Parker hydraulic gear pump, hydraulic valve, hydraulic control valve, hydraulic system schematic and hydraulic cylinders. This makes the publication useful when carrying out component-level hydraulic service and rebuilding operations.
Exploded Views & Illustrated Procedures
One of the key benefits of this manual is its use of exploded component diagrams and photographic service illustrations. The sample pages show individual components identified by call-out numbers, followed by corresponding component descriptions and step-by-step overhaul procedures.
These illustrations can help technicians identify component relationships before disassembly and follow the correct sequence during rebuilding.
Safety Information
The manual begins with safety instructions for maintaining industrial trucks. The safety section emphasizes scheduled preventive maintenance, qualified personnel, safe truck positioning, blocking procedures, electrical power isolation and inspection of brakes, steering mechanisms, hydraulic systems, electrical components and safety devices.
Manual Coverage
- CLARK EC-60 electric industrial trucks
- CLARK EC-80 electric industrial trucks
- 36 Volt configurations
- 48 Volt configurations
- Electric motor overhaul
- Steer pump motor overhaul
- Drive motor overhaul
- Electrical contactor overhaul
- SCR control systems
- Drive axle overhaul
- Brake system overhaul
- Power steering components
- Hydraulic pump and valve overhaul
- Hydraulic cylinders
- Upright lift cylinder
- Lubrication specifications
Important: This manual is intended for qualified and authorized service personnel. Always follow the safety procedures and precautions provided in the manual when performing maintenance, disassembly or repair work on industrial trucks.
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