1973 Triumph Trident T150 Service Manual (249 P.)

Addresses T150 engine systems including oil circulation, lubrication points, and maintenance procedures. Technical reference for transmission, gearbox, and electrical components. Factory documentation PN 99-0963.

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Document Details

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Document Number / Seller:
24057 / Ashley Bell
File Size:
8.74 MB
File Type:
PDF
Language:
English (some of our manuals are multi-language)
Pages:
249
Printable:
Yes
Estimated Download Time:
0.18 Minutes
Delivery Format:
Digital (PDF) - Instant Access
Category:
Engines (Gasoline)
Brand:
Triumph
Reviewed and Approved:
Jul 23, 2025
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Models Covered & Key Technical Specifications

Triumph Trident T150 — 1969–1973 Operational Vault for Motorcycle Service | T150 Series Documentation.

  • Verified Coupling Torques: Conn. rod bolts reach 18 Ib./ft. (2-489 kg./m.) as rated at the critical fastening Bounds.
  • Calibrated Twist Specifications: The crankshaft runs 67 x 70 mm bore and stroke which establishes the 750 cc displacement Topology.
  • Measured Holding Capacity: Oil tank volume reaches 6 pints (3-41 litres) providing splash lubrication Matrix.
  • Prescribed Load Capacity: Unladen weight totals 470 Ibs. (213-4 kg.) which governs the chassis structural Standards.
  • Key Cycle Rate: Engine speed achieves 7,500 rpm maximum output with 29 bhp horsepower Margin.
  • Designated Torque Data: Cylinder head bolts require 18 Ib./ft. (2-489 kg./m.) fastening Protocol.

Professional Workshop Service Manual & Technical Specifications

Specialized undefined Manual: Engines (Gasoline) Official Triumph T150 Service Manual - Factory Diagnostics & Maintenance (1973) Field-Reference

Engine-Type: T150 (1973) models // Year-Coverage: Factory service documentation for Gasoline engines / Three-cylinder 750cc System Logic // System-Identifier: Complete technical specifications with torque data.

Document Section Coverage Reference Details
General Data Lubrication system, engine specifications, crankshaft and bearing data, ignition timing, torque wrench settings Complete specifications provided
Engine Assembly Valve timing, rocker box maintenance, carburetter adjustment, cylinder head removal Documented valve lift and clearance specifications
Transmission System Primary chain alignment, clutch operation, gearbox ratios, shock absorber assembly Service interval and gear ratio documentation included
Brakes & Wheels Brake drum specifications, tyre pressures, wheel bearing dimensions Detailed brake adjustment procedures documented
Electrical System Battery type, sparking plug gaps, ignition system components, horn specifications Complete electrical component listing provided

Documentation sections include Engine Assembly, Transmission, Gearbox, Lubrication System, and Electrical System, whereas comprehensive troubleshooting coverage addresses Ignition Timing by Stroboscope, Primary Chain Alignment, and Contact Breaker Adjustment, and specific maintenance procedures detail Rocker Clearance Adjustment and Oil Pressure Release Valve Service, with additional support materials covering Fuel System Components and Brake Operating Mechanisms.

System operation descriptions cover crankshaft and camshaft arrangement, valve rocker mechanisms with adjustable components, and oil lubrication pathways through main bearings and big end journals. The document addresses transmission and clutch assembly featuring a triple row primary chain, diaphragm spring clutch design, and constant mesh gearbox with internal gear ratios. Assembly instructions are detailed for the inlet and exhaust valve systems including valve seat inserts and push rod operating mechanisms. Electrical equipment sections provide specifications for the alternator, contact breaker unit with automatic advance mechanism, and spark plug gap settings.

Reliable reference materials include detailed specifications for piston crown design with compression and oil control rings, cylinder bore dimensions measured in both imperial and metric units, and connecting rod bearing clearance tolerances. The documentation presents suspension component details covering telescopic fork specifications, rear damper unit assembly, and steering head bearing specifications. Wheel and brake system information encompasses drum diameter measurements, lining thickness data, and tyre pressure tables organized by load conditions.

The manual documents torque specifications for the primary chainwheel securing nut to ensure proper service interval reliability.


Manual provided for reference purposes. Always consult current factory documentation before undertaking repairs.

FAQ

What are the **proper** clearance measurements for inlet and exhaust valve rocker arms? keyboard_arrow_down

0.006 in. inlet and 0.008 in. exhaust when the engine is cold, set with a feeler gauge between the rocker arm and valve stem.

Specify the **standard** torque setting for connecting rod bolts. keyboard_arrow_down

18 lb./ft. (2.489 kg./m.) dry specification is required for proper bearing retention and engine integrity.

What is the **necessary** procedure before decarbonising a cylinder head? keyboard_arrow_down

0.020 in. (0.50 mm.) tappet clearance should be set for checking, and all sparking plugs should be removed and cleaned in paraffin (kerosene) or grit-blasted.

Calculate the **recommended** total lubrication interval for wheel bearing greasing. keyboard_arrow_down

12,000 miles (19,200 Kms.) is the standard interval for greasing wheel bearings and steering head bearings simultaneously.

What values must be **calibrated** when adjusting primary chain tension? keyboard_arrow_down

0.25 in. (12 mm.) free movement is the correct specification, checked with the engine stopped and the chain at its normal running position.

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Reviews (3)

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This manual is a must-have for anyone working on the Triumph Trident T150. The instructions are clear and easy to follow!
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I had a fantastic experience with the download process. The email with the link came through quickly, and the support team was very helpful when I had questions. Highly recommend!
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Rated 5 out of 5 stars