2002 Dodge RAM 2500–3500 Service Manual (P/N 81-370-02057)

• Covers 2002 Dodge RAM 2500 and 3500 trucks, BR/BE series, in 4x2 and 4x4 configurations, with standard cab, Quad Cab, Club Cab, and Cab Chassis references.
• Engine repair sections cover the 5.9L V8, 8.0L V10, and 5.9L 24-valve Cummins turbo diesel, including engine removal, cylinder-head work, and internal component inspection and assembly.
• Transmission and transfer-case overhaul covers NV4500, NV5600, 46RE, 47RE, NV241LD, and NV241HD units. Automatic-transmission procedures include hydraulic pressure testing and clutch-and-band air testing.
• 248FBI front axle and 248RBI, 267RBI, and 286RBI rear axle coverage includes gear-noise diagnosis, differential disassembly, and ring-and-pinion setup.
• Separate 2WD and 4WD suspension sections detail steering knuckle, hub bearing, and control arm removal and installation, alongside wheel alignment and steering-gear service.
• DRBIII-based diagnostics address trouble codes, no-code complaints, and post-repair verification, including Kelsey-Hayes EBC 2 rear-wheel ABS and EBC 325 four-wheel ABS systems.

Factory Manual Set and PDF Contents

This 3,109-page PDF set contains a 2,220-page Service Manual, a 534-page Powertrain Diagnostic Procedures manual, a 266-page Body Diagnostic Procedures manual, and an 86-page Chassis Diagnostic Procedures manual. A separate two-page cover/foreword file and one-page navigation file complete the set.

The main manual carries Publication No. 81-370-02057 and includes May 2002 revised 248FBI service pages. Separate chapters address cooling-system diagnosis, exhaust components, and emissions-control service.

Drivetrain and Chassis Reference

The front-axle section distinguishes vacuum-disconnect service from non-disconnect axle-shaft seal procedures. Its Vacuum Control System diagram identifies the transfer-case control switch, axle shift motor, and related vacuum components. Rear differential repair distinguishes Trac-Lok and Powr-Lok limited-slip designs rather than treating every axle alike.

Automatic-transmission chapters extend to valve-body repair, overdrive-unit rebuilding, and electronic governor service. Propeller-shaft diagnosis, universal-joint replacement, clutch service, rear spring work, and base-brake repairs are covered separately.

The pinion-seal procedure warns that improper pinion-yoke nut tightening can damage the collapsible spacer or bearings. Always observe proper shop safety protocols and use appropriately rated jack stands before inspecting heavy driveline components or working under the chassis.

Gasoline and Cummins Diesel Repair

Gasoline engine diagnosis includes compression and cylinder-leakage tests, oil-pressure checks, and timing-chain inspection. Diesel coverage adds smoke-diagnosis charts, valve-lash adjustment and verification, gear-timing checks, and turbocharger and charge-air-cooler service.

The fuel section distinguishes 235-hp and 245-hp Bosch VP44 injection-pump applications, with pump identification, timing verification, removal and installation, transfer-pump pressure testing, and fuel-system bleeding. The pump's integral Fuel Pump Control Module is identified as non-serviceable. A specific warning addresses serious gear-drive damage from rotating the engine with the injection pump removed.

The Powertrain Diagnostic Procedures file covers both gasoline JTEC/PCM systems and the Cummins diesel ECM, despite its “Gas Powertrain” navigation label. Test paths address no-start conditions, injection-pump faults, sensor circuits, charging problems, and transmission control faults.

Wiring, Body Electronics, and HVAC

Group 8W wiring diagrams are supported by connector pin-outs and connector, ground, and splice locations. Named examples include Fuel/Ignition System, Transmission Control System, and Trailer Tow. The body diagnostic manual adds a CCD Bus System schematic for communication fault tracing.

Body diagnostic coverage includes airbags and trucks equipped with highline or premium Central Timer Modules. It addresses instrument-cluster faults, remote keyless entry, power door locks, theft security, and module communication. The chassis diagnostic file concentrates on the two ABS systems; mechanical brake repair remains in the main service manual.

Body chapters cover door adjustments, tailgate hardware, glass replacement, and water-leak diagnosis. HVAC procedures include performance and leak testing, refrigerant-system evacuation and charging, heater-core replacement, and blend-door actuator service.

Factory Tolerances and Fastener Data

Reference data includes component-specific torque specifications, fluid capacities, wear limits, and electrical test values. Axle setup data covers pinion depth, original-versus-new bearing preload, differential ring-gear backlash, and gear-contact pattern evaluation.

Special-tool references identify Turnbuckle 8885-1, Installer Cups 9039-1, and Receiver 9039-2 for non-disconnect front-axle seal work.

Note: This description covers the manual's contents and reference data. It does not provide step-by-step repair instructions.