Nissan Patrol MQ 160/61 1980–1987 Service Manual Set (P/N SM4E0160G0)

The vehicle manual directs diesel mechanical work to the SD-series engine manual. The supplied engine extract adds teardown, internal inspection and maintenance information, while the supplement sections update transmission and chassis data.

Coverage limits: The vehicle files omit the base Engine Mechanical, Engine Lubrication & Cooling, and Manual Transmission chapters. They are not a complete internal P40/L28 rebuild reference; the FS5W81A pages are updates that refer back to the base transmission chapter.

The diesel mechanical section ends at EM-20 during cylinder-head installation, before the remaining assembly instructions and separate mechanical service-data chapter. LD28 identification is limited to the European station-wagon table; this set is not an LD28 engine repair reference.

PDF Files, Search and Wiring Detail

Search and diagram detail: Text search and embedded bookmarks are unavailable in all 29 PDFs. Small full-vehicle wiring labels require zooming; the Model 61 diagram's finest lettering remains soft when enlarged.

The ZIP contains 29 printable PDFs totaling 656 pages, plus a separate SD33/SD33T wiring-diagram JPG. That total already includes the vehicle manual's three cover/index/user-guide pages and one-page Model 61 diagram, plus the diesel file's cover and three wiring-diagram pages.

Diesel Teardown, Driveline Repair and Electrical Tests

The following is a selection of the covered work, rather than a full contents list. Other topics include canopy removal and body-alignment reference dimensions.

• Engine and fuel service: Engine removal and installation, gasoline compression and fuel-pump tests, carburetor service, and SD-series diesel teardown and internal inspection.

• Transmission and transfer repair: 3N71B overhaul, road, pressure and stall tests; FS5W81A updates; and T130A/T100L gear, shaft, bearing, seal and shift-control service.

• Axles, brakes and steering: Propeller-shaft and limited-slip differential repair, free-running hubs, wheel-bearing adjustment, hydraulic brake bleeding, and manual/power-steering diagnosis.

• Electrical troubleshooting: Starting, charging and ignition diagnosis, auto-glow checks, D.P.C. injection-pump control faults, wiring diagrams and harness layouts.

• Heating and air conditioning: Heater/blower service, refrigerant-system evacuation and charging, performance-test diagnosis, and compressor clutch, shaft-seal and cylinder service.

• P.T.O. and winch service: Disassembly and inspection, gearbox and drum repair, free-running hub service, wire replacement and control-cable adjustment.

• Factory reference data: Assembly-specific torque tables, refill capacities, wear and clearance limits, preload and alignment data, electrical test specifications and special-tool references.

The main manual was written primarily to assist service personnel; these procedures are best suited to trained mechanics who can use the specified measuring and service tools.

Variant Selection and Engine Work

The model-variation section decodes body, engine, steering position, wheelbase, market, transmission, trim and duty-class characters. General-market, European, Middle East and Australian distinctions guide selection of the relevant maintenance, emissions, brake and electrical information.

Gasoline systems: P40 and L28 coverage includes valve and ignition adjustment, air cleaners, fuel filters, and mechanical/electric fuel-pump inspection. Carburetor work covers inspection, cleaning, disassembly, assembly and adjustment.

Canvas Top and other body configurations have separate engine-removal procedures. Emissions material distinguishes P40/L28 crankcase controls, the L28 boost-controlled deceleration device, and Australian evaporative-emissions arrangements.

Diesel internals: The engine extract covers cylinder-head, valve and combustion-chamber inspection, camshafts and bushings, cylinder liners, pistons and rods, crankshafts and bearings, the gear train and flywheel. Its reassembly coverage is partial.

Diesel maintenance covers injection-timing checks, nozzle testing, idle and maximum-speed adjustment, compression testing with gauge set ED19600000, glow-plug checks and injection-pump lubrication where applicable. The SD33 starting-fault charts separate electrical, fuel-delivery and mechanical checks, supporting fault isolation before internal work is planned.

Transmission, Clutch and Differential Detail

The 3N71B chapter works through hydraulic-control units and valves, clutch and brake components, and final assembly. Its welded torque converter requires specialized equipment for internal service.

Clutch procedures cover the disc, cover, release bearing, master cylinder and operating cylinder. Aligning-bar references distinguish KV30100600 for P40, ST20600000 for SD33 and KV30100100 for L28.

The manual cautions that flexing the 3N71B brake band without securing it can crack or peel its lining.

Driveline coverage distinguishes 2S80B, 2F80B and 2F80B-D propeller shafts. C200 and H233B carrier procedures add tooth-contact inspection, side-bearing adjustment, pinion-height setup, preload checks and final verification.

Excessive C200 pinion-nut tightening can permanently over-compress the collapsible spacer, requiring replacement.

Brake and Steering Variants

Brake procedures distinguish CL36V front discs, 2L29 front drums and DS27 rear assemblies, including the Europe-market Nissan Load Sensing Valve (N.L.S.V.).

Steering coverage separates the VRB70L manual box from the I.P.S. 56L power gear and its hydraulic tests using pressure gauge ST27091000. Power-gear disassembly is restricted to the specified sealing components; the remaining parts are replaced as an assembly.

Electrical References and Workshop Requirements

Named references include Schematic/Power Supply Routing, Starting System Schematic and Charging System Schematic. Heater and Air Conditioner Electrical Circuit schematics accompany full-vehicle diagrams for Model 61 and Model 160 SD33/SD33T configurations.

Engine removal, heavy axle work, hydraulic brake service, and refrigerant handling require properly rated lifting, pressure-service, and recovery equipment; follow the factory warnings and current shop safety practices.

Examples of SD33 Compression and Liner Data

For a warmed-up SD33 at 200 rpm, the compression specifications list a standard 2,942 kPa and minimum 2,452 kPa, with a cylinder-to-cylinder differential limit of 294 kPa.

Cylinder-liner inspection data specify projection of 0.02–0.09 mm, with deviation between cylinders below 0.05 mm. These dimensional checks accompany the liner inspection and replacement material.