Caterpillar C15 SDP Truck Engine Complete Service Manual

$139.99 $129.99

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Covers: Caterpillar C15 On-Highway Truck Diesel Engine

  • SDP serial number prefix
  • Please contact us with your engine serial number if you have compatibility questions.

Pages: 2,173
Format: PDF files (zipped)
File size: 68mb
Compatibility: Windows/Mac computers
Notes: Instant digital download only.

The Caterpillar C15 SDP Truck Engine Complete Service Manual set contains operating information, specifications, wiring schematics, disassembly and assembly procedures, testing and adjusting procedures and troubleshooting steps for the Cat C15 SDP truck diesel engine. Whether you are servicing, troubleshooting or overhauling the engine, set of manuals is recommended to accurately and safely perform the job according to the manufacturer’s standards. View the service manual on your computer or print off pages as needed. Over 2,100 total pages of C15 SDP engine service information is included.

Includes 11 PDF manuals in one download.

Topics in the Caterpillar C15 SDP Truck Engine Complete Service Manual:

  • Caterpillar C15 SDP Engine Complete Specifications
  • Caterpillar C15 SDP Engine Torque Values
  • Caterpillar C15 SDP Operation and Maintenance Manual
  • Caterpillar C15 SDP Engine Systems Operation Manual
  • Caterpillar C15 SDP Engine Disassembly and Assembly Manual
  • Caterpillar C15 SDP Engine Fuel System
  • Caterpillar C15 SDP Engine Cooling System
  • Caterpillar C15 SDP Engine Lubrication System
  • Caterpillar C15 SDP Engine Turbocharger
  • Caterpillar C15 SDP Air Intake and Exhaust
  • Caterpillar C15 SDP Engine Testing and Adjusting Manual
  • Caterpillar C15 SDP Engine Troubleshooting Manual (With and Without Codes)
  • Caterpillar C15 SDP Electrical Schematics (Wiring Diagrams) For ALL Serial Numbers
  • Cat On-Highway Engines Electronic PTO Manual
  • And Much More…

Sample pages:


Bore … 137.2 mm (5.40 inch)
Stroke … 171.5 mm (6.75 inch)
Displacement … 15.2 L (927.56 cu in)
Cylinder arrangement … In-Line
Valves per cylinder … 4
The adjustment for the inlet valve lash is the following value. … 0.38 ± 0.08 mm (0.015 ± 0.003 inch)
The adjustment for the exhaust valve lash is the following value. … 0.76 ± 0.08 mm (0.030 ± 0.003 inch)
Firing order (injection sequence) … 1, 5, 3, 6, 2, 4
Crankshaft rotation … counterclockwise

These engines are equipped with an electronic control system. The system consists of a computer,
sensors, and software. The system provides these capabilities:
• Control of the engine
• Control of particulate emissions via the “Caterpillar Regeneration System” (CRS)
• Interface with the vehicle
• Fault detection and reporting
Engine Control
The engine’s computer is called the Electronic Control Module (ECM). The ECM monitors inputs
from various sensors and inputs from the vehicle in order to control the engine.
The ECM contains a flash file. The flash file is the software for the ECM. The flash file contains the
operating maps. The operating maps define the following characteristics of the engine:
• Horsepower
• Torque curves
• Engine speed (rpm)
Refer to Troubleshooting, “System Overview” for additional information on the electronic control
“Caterpillar Regeneration System” (CRS)
The CRS contains these components:
Diesel Particulate Filter (DPF) – A DPF is installed in the vehicle’s exhaust system. The DPF
collects soot and ash from the engine’s exhaust.
Aftertreatment Regeneration Device (ARD) – The ARD provides additional heat to the engine’s
exhaust in order to convert the soot in the DPF into gas. The ARD operates only when additional heat
in the exhaust is needed.
Software – Software in the ECM monitors the DPF and the ARD. The software controls the delivery
of fuel, combustion air, and spark to the ARD.
Vehicle Interface
The ECM interfaces with the vehicle via an electrical connector on the ECM. The interface is
configurable. This allows the control system to support a variety of vehicles and applications.
Inputs – The vehicle provides inputs to the electrical connector on the ECM in order to indicate the
status of switches and other controls. The ECM must be correctly configured in order to properly
interpret the inputs. The ECM is configured via the Caterpillar Electronic Technician (ET). Refer to
Troubleshooting, “Programmable Input Parameters” for additional information on configuring the
Outputs – The ECM provides outputs for the vehicle via the electrical connector in order to control
lamps, solenoids, and other devices. The ECM must be correctly configured in order for the outputs to
match the vehicle’s configuration. Refer to Troubleshooting, “Programmable Output Parameters” for
additional information on configuring the outputs.
Fault Detection and Reporting
The ECM monitors inputs from the sensors and inputs from the vehicle. Software in the ECM
interprets the inputs. The software determines if the inputs are operating correctly. A Diagnostic
Trouble Code (DTC) is activated when the software detects a problem with an input.
The ECM broadcasts the codes on two data links. The data links are ATA and J1939. Cat ET must
communicate on both data links in order to fully service the engine.
The codes can be displayed on Cat ET and optional displays in the vehicle’s cab. Refer to
Troubleshooting, “Diagnostic Trouble Codes” for additional information on diagnostic trouble codes
and a complete list of codes.

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