1998 Nissan Frontier D22 series Automatic Transaxle AT Manual

1998 Nissan Frontier D22 Automatic Transaxle Technical Documentation

• Covers 1998 Nissan Frontier D22 series pickups equipped with the automatic transaxle, including shift control, power transmission, and major component overhaul procedures
• Official Nissan publication, section AT, excerpted from the 1998 factory workshop library
• Contains 56 detailed component diagrams, 8 electrical schematic layouts, 4 diagnostic flow charts, and 9 complete torque and clearance specification tables
• File delivered as a direct download the moment payment clears
• Indexed PDF search covers every chapter and appendix
• This specific section provides the foundational data for the D22-series automatic transmission, serving as the required reference for all internal mechanical and hydraulic troubleshooting

D22 Transmission Systems and Component Breakdown

This manual describes the architecture of the 1998 Nissan Frontier D22 automatic transaxle. The document outlines the shift mechanism operation, detailing power flow across planetary gear sets for each selector position from P through 1. Chapters explain the functional integration of the torque converter, oil pump assembly, and multiple clutch packs, including the reverse, high, forward, and overrun clutches. The text also catalogs the control valve body assembly, describing individual valve functions such as the pressure regulator, shift valves, and accumulator control.

Technical Specification and Inspection Data

Technical data previews include assembly torque values, such as the 33 Nm specification for oil pump housing bolts and 16–22 Nm for transmission case fasteners. Clearances for internal components are listed, with the low and reverse brake clearance documented at 0.5–0.8 mm. Understanding parts documentation for the 1998 Nissan Frontier provides further context for interpreting these technical parameters. Diagnostic schedules list stall speed standards at 2,100–2,300 rpm and define fluid pressure requirements across multiple operating conditions. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. This factory-level publication is intended for owners and technicians managing the internal repair of the 1998 Nissan Frontier D22 series transmission, providing essential clearance, torque, and assembly data for the entire unit.

Document Reference: Section AT, 1998 Nissan Frontier Service Manual