Lincoln Aviator 2004–2005 Repair Manual (P/N LMAVI0305)

Built around 2005 Lincoln Aviator repair information, this 79-file PDF set combines workshop coverage with the 2004 Owner's Guide, the 2004 Scheduled Maintenance Guide, and year-specific wiring diagrams for 2003-2005. The repair material is best suited to professional technicians and experienced DIY owners who can work with scan equipment, holding fixtures, and precision measuring tools.

• A 5,918-page PDF collection - 2004 Owner's Guide: 352 pages; 2004 Scheduled Maintenance Guide: 48 pages; 2003, 2004, and 2005 system wiring diagrams: 60, 63, and 60 pages; 2005 repair and diagnostic articles: 5,335 pages.
• Engine coverage addresses the 4.6L 4-valve DOHC V8, including engine removal, timing-drive and valve-train work, cylinder-head disassembly, oil-pump service, seals, and lower-end inspection and assembly.
• The 5R55S automatic transmission material provides electronic and symptom diagnosis, road and pressure testing, transmission removal, valve-body and solenoid-body service, and complete internal disassembly and assembly.
• AWD driveline sections cover driveshafts, front and rear halfshafts, axle removal, pinion seals and bearings, differential teardown, ring-and-pinion setup, backlash checks, and shim selection.
• Chassis and system repair information includes ABS/AdvanceTrac pinpoint tests and module calibration, hydraulic brake bleeding, steering pump flow and pressure testing, front and rear suspension service, SRS diagnosis, and R-134a climate-control testing.
• Separate wiring sets include the 4.6L Engine Performance, 4WD, Automatic A/C, Computer Data Lines, Supplemental Restraints, and HID/non-HID Headlights circuits, with connector identification, splice and ground locations, wire colors, and pin-level circuit paths.

Repair and Diagnostic Depth

The engine material moves beyond routine maintenance. It documents in-vehicle repair of the intake manifolds, flexplate, crankshaft seals, timing components, camshaft followers, lash adjusters, valve springs, oil pan, oil pump, and pickup tube. Cylinder-head and lower-end work is supported by exploded views, inspection limits, clearances, torque specifications, lubrication data, and dedicated service tools.

Transmission diagnosis is organized around DTC charts, symptom indexes, shift-point road tests, output-state control, solenoid functional checks, and line- and air-pressure tests. The internal repair chapters then trace the 5R55S through the main control valve body, fluid pump, clutch drums, planetary assemblies, one-way clutches, bands, and servos. The procedures call out selective bearings, snap rings, end-play checks, and band adjustments rather than treating the unit as a remove-and-replace assembly.

Front and rear differential chapters include noise and vibration diagnosis, axle and carrier removal, seal and bearing replacement, gear-contact inspection, pinion-depth and preload work, backlash adjustment, and shim-selection worksheets. Suspension files add exploded views and shock-and-spring disassembly; the braking material covers disc brakes, parking brake, booster components, ABS hydraulic controls, pressure testing, bleeding, and stability-assist calibration.

Special-tool references include Camshaft Holding Tool 303-446 (T93P-6256-AHR), Crankshaft Holding Tool 303-448 (T93P-6303-A), Transmission Range Sensor Alignment Gauge 307-351 (T97L-70010-A), WDS/VCM diagnostic equipment ST2332-A, and the 73 III Automotive Meter 105-R0057 or equivalent.

Electrical, Climate, and Owner Information

System-specific pinpoint tests cover exterior and interior lighting, charging and starting, instrument cluster and message center, power seats, windows, locks, mirrors, parking aid, navigation, entertainment, and wiper/washer functions. The SRS section includes RCM fault isolation, air bag and pretensioner circuits, component replacement, and system depowering and repowering. Climate-control material addresses DEATC operation, refrigerant identification and recovery, leak detection, pressure tests, heater-core checks, actuator diagnosis, and front and auxiliary rear HVAC components.

The 2004 Owner's Guide explains the instrument cluster, DEATC and rear passenger controls, navigation map and destination functions, voice commands, seats and safety restraints, AdvanceTrac/AWD operation, towing, roadside procedures, capacities, lubricants, and bulb replacement. Its bulb chart identifies H11 halogen low-beam bulbs and 3157 AK front park/turn lamps. The separate 2004 Scheduled Maintenance Guide is a general Ford schedule covering trucks, full-size vans, SUVs, cars, and minivans, including normal and special operating conditions.

Scope and Repair Cautions

The workshop-style repair chapters are for 2005 Aviator systems. The 2003 portion is limited to wiring diagrams, while the 2004 material consists of the Owner's Guide, Scheduled Maintenance Guide, and wiring diagrams; this set does not provide equivalent 2003 or 2004 mechanical repair chapters. The Ford-published owner and maintenance guides are accompanied by repair articles and wiring pages bearing Mitchell Repair Information headers, with many technical illustrations credited to Ford Motor Company.

The timing-chain sections warn that rotating the crankshaft or camshafts with the chains removed and the cylinder heads installed can cause severe piston and valve damage. During 5R55S teardown, the manual also warns that pump removal without first releasing the overdrive-band adjustment can damage both the pump and the band. Follow the included SRS depowering and repowering instructions and refrigerant-handling warnings before restraint or A/C repair.