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

• Factory coverage: Built around the 1980 Nissan Patrol MQ model 160 and 61 Series publication, with P40, L28, and SD33 vehicle configurations, left- and right-hand drive layouts, regional specifications, and light- and heavy-duty chassis variants.
• Engine and fuel work: Covers engine removal and installation for standard-body and canvas-top trucks, gasoline maintenance and compression diagnosis, carburetor teardown and adjustment, mechanical and electric fuel-pump testing, emissions controls, and SD-series diesel disassembly, inspection, and assembly.
• Transmission and driveline repair: Includes 3N71B automatic-transmission removal, major overhaul, road testing, pressure testing, and stall testing; FS5W81A five-speed update material; and T130A/T100L transfer-case teardown, bearing, seal, gear, shaft, and shift-control service.
• Axle, brake, and steering procedures: Details 2S80B/2F80B/2F80B-D propeller shafts, C200 and H233B carriers including limited-slip service, free-running hubs, wheel-bearing adjustment, hydraulic brake bleeding, the Europe-market N.L.S.V., and manual and power-steering diagnosis.
• Electrical, HVAC, and special equipment: Provides starting, charging, ignition, auto-glow, and diesel injection-pump control troubleshooting, plus air-conditioning evacuation and charging, compressor service, P.T.O. repair, and winch disassembly and adjustment.
• Factory reference data: Supplies assembly-specific torque tables, refill capacities, wear and clearance limits, preload and alignment data, pressure and electrical test specifications, troubleshooting charts, exploded views, and special-service-tool numbers.

Factory Scope and Vehicle Identification

This 656-page PDF set combines 556 pages from the Patrol 160/61 factory publication, a 57-page Nissan SD-series diesel engine manual, and 43 pages of later transmission and axle/suspension update material. A separate full-vehicle wiring-diagram image is also included. The main service manual carries Publication Number SM4E0160G0 and was written primarily to assist service personnel, making it best suited to trained mechanics who can follow factory overhaul procedures and use the specified measuring and service tools.

The model-variation section decodes body, engine, steering position, wheelbase, market, transmission, trim, and duty-class characters. Body coverage includes hardtop, high-roof hardtop, pickup, van, station wagon, and canvas-top configurations. Regional distinctions are shown for general-market, European, Middle East, and Australian vehicles, which matters when selecting emissions, brake, electrical, and maintenance information.

Engine and Fuel-System Depth

The vehicle chapters cover P40 and L28 gasoline-engine maintenance, valve and ignition adjustment, compression checks, air cleaners, fuel filters, mechanical and electric fuel pumps, and carburetor inspection, cleaning, disassembly, and assembly. Emissions material separates P40 and L28 crankcase controls, L28 exhaust controls, the boost-controlled deceleration device, and the Australian evaporative-emissions system. SD33-equipped vehicles receive diesel throttle and injection-pump control coverage, including the D.P.C. module, auto-glow system, and electrical fault diagnosis.

Internal diesel repair is handled by the separate SD22, SD23, SD25, and SD33 engine manual. It covers complete engine disassembly, cylinder-head and valve inspection, camshaft and bushing checks, cylinder liners, pistons and rods, crankshaft and bearings, combustion chambers, gear train, flywheel, and complete reassembly. The Model 160 application table identifies the SD33 and turbo diesel configuration. Diesel maintenance adds injection timing, nozzle service, idle and maximum-speed adjustment, compression testing, glow-plug checks, and injection-pump lubrication where applicable.

Important scope limit: this file set does not contain the base manual's gasoline Engine Mechanical, Engine Lubrication & Cooling, or original Manual Transmission sections. It is not a complete internal P40/L28 rebuild reference. The included manual-transmission pages are FS5W81A update material rather than the full base chapter.

Chassis, Diagnostics, and Diagrams

Chassis repair coverage goes well beyond maintenance. The 3N71B chapter includes hydraulic-control units and valves, clutch and brake components, final assembly, diagnostic road tests, pressure and stall tests, and symptom charts. Differential procedures include tooth-contact inspection, side-bearing adjustment, pinion-height setup, preload checks, and final verification for C200 and H233B carriers. Brake coverage distinguishes the CL36V front disc, 2L29 front drum, and DS27 rear assemblies, while steering sections cover the VRB70L manual box and L.P.S.56L power gear with pump pressure testing.

Named electrical references include Schematic/Power Supply Routing, Starting System Schematic, Charging System Schematic, Heater Electrical Circuit Schematic, Air Conditioner Electrical Circuit Schematic, and full-vehicle wiring diagrams for Model 61 and Model 160 SD33/SD33T layouts. Special-tool charts identify engine-specific clutch aligning bars KV30100600 (P40), ST20600000 (SD33), and KV30100100 (L28), along with ED19600000 for compression testing and ST27091000 for power-steering pressure checks.

The manual also flags repair traps that matter during an overhaul. Excessive tightening of the C200 pinion nut permanently over-crushes the collapsible spacer, requiring replacement, while flexing the 3N71B brake band without securing it can crack or peel the lining. 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.