Caterpillar K21, K25 Gasoline Engine Service Manual
241 pages · Publication 99789-65110
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What's inside
From the manual's own table of contents: 95 topics. See sample pages (PDF, 255 KB)
- HOW TO USE THIS MANUAL
- Description
- Definition of Terms
- Definition of Units
- PRECAUTIONS FOR SAFETY AND QUALITY
- Reduction of Risk Operation
- Correct Operation
- PRECAUTIONS
- Precautions in Draining Engine Coolant
- Precautions for Disconnecting Fuel Piping
- Replacement
- Precautions for Assembly and Installation
- Parts Requiring Angle Tightening
- Caution for Use of Power Tools
- Precautions for Liquid Gasket Application
- TIGHTENING TORQUE
- Standard Bolt Tightening Torque
- Engine Part Tightening Torque
- SPECIAL SERVICE TOOLS
- ENGINE OUTSIDE DRAWINGS
- MAIN SPECIFICATIONS
- STANDARD AND REPAIR LIMIT
- STAMPED LOCATION OF ENGINE NO
- TROUBLE DIAGNOSIS
Show all 95 topics
- Engine Adjustment
- Engine LPG Fuel System
- ENGINE MAINTENANCE
- Specifications
- Maintenance Schedule
- Oil and Grease, and Capacity
- On Board Inspection and Service
- ENGINE INSPECTION AND ADJUSTMENT
- Engine Body Related
- Ignition and Fuel Systems
- Precautions for Draining Engine Coolant
- Disassembling
- ADJUSTMENT VALUE
- Removal
- Installation
- Inspection
- ENGINE SERVICE
- Engine Disassembly
- Inspection and Correction
- Engine Assembly
- General precautions for service operations
- PREPARATION
- Service Tools
- BASIC INSPECTION
- Air-fuel Ratio
- Idle Air Volume Learning
- Learning
- Fuel pressure inspection
- How to Proceed with Trouble Diagnosis
- Diagnosis Chart by Symptom
- Component Parts Location
- ECM Component
- Circuit Diagram
- ECM Terminal Layout
- ECM Input/Output Signal Specifications
- Service Tool (ST)
- Self-Diagnosis Function (without ST)
- ST Reference Value in Data Monitor
- Fail-Safe Function
- POWER SUPPLY AND GROUND SYSTEM
- SYSTEM
- Component Parts Inspection
- MASS AIR FLOW SENSOR SYSTEM
- ST Data Monitor Display
- HEATED OXYGEN SENSOR SYSTEM
- THROTTLE POSITION SENSOR SYSTEM
- INTAKE AIR TEMPERATURE SENSOR
- PNP SWITCH SYSTEM
- LUBRICATION SYSTEM
- Oil Pressure
- Lubrication Schematic Diagram
- Oil Pump
- ENGINE COOLANT SYSTEM
- Cooling System Configuration
- Water Pump
- Thermostat
- ELECTRONIC CONTROLLED TYPE)
- UNIT LAYOUT
- Electronic Control System Specifications
- LPG FUEL SYSTEM TROUBLE DIAGNOSIS
- Connector
- Throttle Assembly
- Injector Holder
- Primary (Decompression) Room
- STARTER MOTOR
- Starter Motor Specifications
- Overhaul
- Assembly Inspection
- ALTERNATOR
- Components of Alternator
- Disassembly
Inside this manual
Real pages from this service manual (241 pages). Open the sample pages (PDF, 254 KB)
- Specifications, page 36: ENGINE MAINTENANCE
- Troubleshooting, page 135: RELATIONSHIP BETWEEN MALFUNCTIONING SYMPTOM AND
- Diagram, page 183: THROTTLE CONTROL
This is a service manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 241 pages
Quantity one is the manual described above.
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Other editions and similar models
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).