Caterpillar K21, K25 Gasoline Engine Service Manual
216 pages · Publication 99789-67100
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What's inside
From the manual's own table of contents: 121 topics. See sample pages (PDF, 282 KB)
- HOW TO USE THIS MANUAL
- Description
- Definition of Terms
- Definition of Units
- Safe 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 with 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
- Engine Adjustment
Show all 121 topics
- 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
- Precautions with Liquid Gasket Application
- ADJUSTMENT VALUE
- Removal
- Installation
- Inspection
- ENGINE SERVICE
- Engine Disassembly
- Inspection and Correction
- Engine Assembly
- Engine
- Precaution
- PREPARATION
- Component Parts Location
- ECM Component
- Circuit Diagram
- ECM Terminal
- How to Proceed with Trouble Diagnosis
- Diagnosis Chart by Symptom
- Fail-Safe Function
- Table of DTC
- Service Tool
- (Without Service tool)
- ECM Active Test
- BASIC INSPECTION
- Ignition Timing
- and Idle Air Volume Learning
- Learning
- Fuel Pressure Inspection
- COMPONENT PARTS INSPECTION
- Crankshaft Position Sensor (POS)
- Camshaft Position Sensor (PHASE)
- Mass Air Flow Sensor
- Engine Coolant Temperature Sensor
- control actuator assembly)
- (Accelerator work unit)
- mass air flow sensor)
- Stop Lamp Switch
- Spark Plug
- Ignition Coil
- Injector
- Fuel Pump
- throttle control actuator assembly)
- Heated Oxygen Sensor
- LPG Injector
- LPG Assistance Injector
- LPG Fuel Pressure Sensor
- PTC Heater
- LPG Interception Valve
- PCV GAS RECIRCULATION DEVICE
- System Diagram
- ECM COMPONENTS
- Removal and Installation
- LUBRICATION SYSTEM
- Oil Pressure
- Lubrication Schematic Diagram
- Oil Pump
- ENGINE COOLANT SYSTEM
- Cooling System Configuration
- Water Pump
- Thermostat
- EMISSION CONTROL SYSTEM
- K-Engine System Diagram (Gasoline)
- K-Engine System Diagram (LPG)
- K-Engine System Diagram (Combined Use)
- UNIT LAYOUT
- Electric Control System Specifications
- LPG FUEL SYSTEM TROUBLE DIAGNOSIS
- FUEL SYSTEM
- Electric Control Throttle Assembly
- and Combined Use)
- Combined Use)
- SYSTEM
- Vaporizer Mechanism and Operation
- LPG Fuel Injector
- LPG Assist Fuel Injector
- Relief Valve (2 Relief Valves)
- VAPORIZER
- Disassembly and Inspection of Vaporizer
- STARTER MOTOR (DRY TYPE)
- Components
- Overhaul
- Assembly Inspection
- STARTER MOTOR (WET TYPE)
- Exploded View
- ALTERNATOR
- Disassembly
Inside this manual
Real pages from this service manual (216 pages). Open the sample pages (PDF, 281 KB)
- Specifications, page 20: MAIN SPECIFICATIONS OF IGNITION SYSTEM
- Diagram, page 122: Circuit Diagram
- Troubleshooting, page 137: Diagnosis Chart by Symptom (Cont’d)
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, 216 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).