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Welcome to the Peterbilt 387 Service Manuals section! Here you will find comprehensive guides and instructions for maintaining and repairing your Peterbilt 387 trucks. Our team of experts is dedicated to providing you with top-quality service manuals to ensure the reliability and performance of your vehicles. From routine maintenance to complex repairs, our manuals have got you covered. Stay updated with the latest materials and updates by checking back often. Thank you for choosing Peterbilt 387 Service Manuals!