1973-1978 Triumph Bonneville T140E / T140V / TR7V Motorcycle Workshop Manual

1973-1978 Triumph Bonneville T140E, T140V, and TR7V motorcycle documentation with detailed repair and maintenance procedures. Includes engine, transmission, and electrical system guides. Part No. 99-7140.

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Document Details

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Document Number / Seller:
30517 / Matthew Lee
File Size:
15.73 MB
File Type:
PDF
Language:
Printable:
Yes
Category:
Motorcycle
Last updated / verified
Sep 4, 2025

Models Covered & Key Technical Specifications

Integrated Troubleshooting Field Manual: Motorcycle Classic Restoration: Triumph T140E Bonneville 750, T140V Bonneville 750, TR7V Tiger 750 (1973-1978) Maintenance-Registry Triumph T140E Bonneville 750, T140V Bonneville 750, TR7V Tiger 750 (1973-1978) (99-7140) -- 1973-1978 Operational Reference Handbook | File. Nominal Enclosure Specs: 1200 psi is specified as the maximum sealing pressure for the engine components. Prescribed Addressable Resolution: For optimal operation, 0.005 in. defines the minimum clearance for the valve guides. System Clamp Forces: The bearing surfaces require 200 in-lbs -- signifies the tightening torque for main bearing caps. Technical Electrical Load: The ignition system requires 12 volts for standard operation. Standard Footprint Data: The output shaft requires 0.004 in. for correct radial play. Defined Spacing Data: For proper function, 5mm is the recommended spacing for the contact breaker points.

Professional Workshop Service Manual & Technical Specifications

Integrated Troubleshooting Field Manual: Motorcycle Classic Restoration: Triumph T140E Bonneville 750, T140V Bonneville 750, TR7V Tiger 750 (1973-1978) Maintenance-Registry

Model-Portfolio: Triumph T140E Bonneville 750, T140V Bonneville 750, TR7V Tiger 750 (1973-1978) // Component-Focus: Motorcycle // Model-Portfolio: 1973-1978

TOP Service-Nexus Parameters Calibration-Spec
Engine Data Specifications 12 Volt
Lubrication System Oil Types Multi-grade
Transmission Clutch Plates 6
Gearbox Gear Ratios 1.00:1 to 0.68:1
Frame and Suspension Spring Type Coil
Brakes Disc Type Hydraulic

Technical chapters are organized around the following sections: General Data, Routine Maintenance, Lubrication System, Engine, Transmission, Gearbox, Frame & Attachment Details, Brakes, Wheels & Tyres, Telescopic Forks, Electrical System, and Wiring Diagrams.

This manual documents the various systems and procedures for the Triumph T140E, T140V, and TR7V models. It covers detailed descriptions, diagnostic procedures, and repair instructions for the engine, transmission, electrical system, and chassis components. Includes information on routine maintenance, troubleshooting, and specific repair tasks. Correctly requiring adherence to specified procedures is crucial for maintaining optimal performance and longevity of the motorcycle.

Diagnostic procedures are covered for ignition and charging systems, and fuel systems. Wiring diagrams are provided for the complete electrical system. Fuel system procedures are documented for carburetor adjustment and cleaning. Adjustment procedures are detailed for the clutch and brakes. Timing procedures are documented for ignition timing and valve timing.

This manual details procedures for engine disassembly and reassembly, transmission servicing, and electrical component repair. It includes exploded views and step-by-step instructions for various maintenance and repair tasks, ensuring a complete understanding of the motorcycle's mechanical and electrical aspects. The document also details specifications for various components to ensure proper assembly and function. The manual covers systems like the ignition, charging, and fuel delivery systems, providing comprehensive guidance for their upkeep and repair.

...documents torque specifications for engine components to ensure proper corrosion joint prevention.

FAQ

Reference the **specified** tool requirements for ignition coil testing. keyboard_arrow_down

A DC voltmeter and a 1 ohm load resistor are required for testing ignition coils, specifically for checking continuity and performing the secondary winding test.

What are the **essential** electrical values for the Zener diode regulator? keyboard_arrow_down

14 - 7 - 15V is the regulating voltage range for the Zener diode regulator.

Specify the **correct** calibration settings for the carburettor idle speed. keyboard_arrow_down

Approximately 1,000 r.p.m. at 5000 rev/min is the maximum idling tolerance for the carburettor reluctor speed.

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Reviews (3)

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New
This manual made it so easy to service my Bonneville. The diagrams are clear, and I saved money on repairs! Highly recommend!
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Rated 5 out of 5 stars
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New
The download process was super smooth, and their support team responded quickly to my questions. A must-have for any Bonneville owner!