International Harvester CTS-11 & CTS-12 Motor Truck Service Manual PDF
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Complete International Harvester CTS-11 and CTS-12 Service Manual for L-Line and R-Line trucks. Covers specifications, front/rear axles, clutches, electrical systems, wiring diagrams, engines, fuel systems, lubrication, maintenance procedures, and detailed mechanical repair instructions. Includes R-Line supplemental pages and full Group/Section index.
Description
International Harvester CTS-11 & CTS-12 Motor Truck Service Manual PDF DOWNLOAD
DESCRIPTION
This is the complete factory International Harvester CTS-11 & CTS-12 Motor Truck Service Manual, covering L-Line trucks (CTS-11) and R-Line trucks (CTS-12 supplement).
The manual begins by clearly identifying the two editions:
“CTS-11 for L-Line Trucks”
“CTS-12 Supplemental Pages for R-Line Trucks Only”
The introduction notes that the manual is written in a practical, non-technical style and includes indexes inside each Group for fast navigation.
The R-Line supplemental index details all additional units that differ from L-Line trucks, covering axles, clutches, electrical systems, engines, fuel systems, and lubrication.
Table of Contents / Groups & Sections
A. GENERAL INFORMATION
From the Group index:
Ability formulas
Ball & roller bearing maintenance
Cold-weather recommendations
Conversion charts (liquids, Fahrenheit-Centigrade, altitude/pressure)
Lubricating oil recommendations
Glossary of technical terms
Mathematical formulas used in transportation engineering
Inspection of new trucks
B. R-LINE SUPPLEMENTAL SECTIONS (CTS-12)
From the R-Line index page:
Front Axle – Specifications
Rear Axle – Specifications
Bodies, Cabs & Cowls
Clutch – Sections A1–A4
Electrical Systems – Specifications 1–4
Complete Electrical System Circuit Diagrams (A1–A7)
Electrical Illustrations (E1–E2, J1)
Engines – Specifications 1–4
Fuel System – Specifications 1–4
Instruments
Lubrication A1–A3
C. CLUTCH SECTION (Detailed Example)
The CTS-12 clutch pages include:
Release lever adjustment diagrams
Spacer plate thickness tables
Truck-specific settings for R-110, R-120, R-130, R-150, RM-120, RM-150
Separate charts for 10″, 11″, 12″, and 14″ Rockford clutches
D. ELECTRICAL SYSTEMS
Includes detailed component diagrams:
Starter motors (Delco-Remy 1108009)
Simple electric motor wiring diagrams
E. L-LINE & R-LINE MAJOR SYSTEM COVERAGE
Across 664 pages, the manual covers:
Axles (front & rear)
Brakes & hydraulics
Clutches & driveline
Transmissions
Fuel systems
Engines (SD-220 and others)
Electrical systems & wiring
Lubrication schedules
Cab, frame, and body service
Maintenance intervals
Torque specs
Wiring diagrams and component illustrations
📄 FILE DETAILS (Structured)
| FIELD | DETAILS |
|---|---|
| Manual Name | International Harvester CTS-11 & CTS-12 Motor Truck Service Manual |
| Models Covered | CTS-11 (L-Line Trucks), CTS-12 (R-Line Supplemental Pages) |
| Year | 1953 (based on supplement header) |
| PDF Quality | High-resolution, clear text, diagrams included |
| Total Pages | 664 pages (full complete manual) |
