This comprehensive service repair manual provides detailed instructions and specifications for the Datsun 520 and 521 trucks manufactured between 1965 and 1968. It covers a vast array of topics, including engine overhaul and rebuilding, brake system maintenance, sunroof repair, timing belt replacement, troubleshooting and diagnostics, engine performance optimization, front end procedures and specifications, suspension adjustments, transmission information, air conditioning service and capacities, computer diagnostic codes, firing orders, detailed specifications, factory maintenance schedules and charts, serpentine belt routings with diagrams, timing belt service procedures, driving concerns, complete torque specifications, U-joint and CV-joint service procedures, repair procedures, and complete wiring diagrams. Illustrated with hundreds of diagrams and images, this manual empowers you to perform repairs and maintenance with confidence, ensuring your Datsun truck remains reliable and roadworthy.

The Datsun 520 and 521, produced from 1965 to 1968, were a pair of robust and reliable trucks that solidified Datsun's reputation for building sturdy and efficient vehicles. These trucks were designed to be workhorses, intended for a variety of applications, from light hauling to transporting goods in challenging environments. The 520 and 521 featured a simple and durable design, with a ladder frame chassis and a solid front axle, making them capable of handling heavy loads and rough terrain. Powered by a 1.3-liter four-cylinder petrol engine, the trucks were known for their fuel efficiency and low operating costs, making them a popular choice for businesses and individuals alike.

While the 520 and 521 shared the same basic design, they differed slightly in their features and capabilities. The 520 was the lighter version, typically offered with a single cab and a shorter wheelbase, making it more maneuverable in tight spaces. The 521, on the other hand, was the heavier-duty model, available with a longer wheelbase and a double cab option, providing increased payload capacity and passenger seating. Both models were available with a variety of body styles, including pickup trucks, stake trucks, and platform trucks, allowing for diverse applications. Despite their age, the Datsun 520 and 521 remain popular among enthusiasts and collectors, appreciated for their ruggedness, simplicity, and affordability. Their enduring legacy demonstrates the strength and ingenuity that characterized Datsun's early truck offerings.