1991-2000 Renault Diesel Engine 852 J8S Service & Repair Manual

Workshop repair manual ENGINE (Diesel) Indirect injection Aluminium, 4 cylinders Types Vehicles 852 J8S Renault 18 Fuego Renault 20 Renault 21 Renault 25 Renault 30 Safrane Espace Trafic Master Jeep Cancels and replaces note dated JULY 1991 77 11 293 322 "The repair methods given by the manufacturer in this document are based on the technical specifications current when it was prepared. The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which his vehicles are constructed." DECEMBER 2000 All copyrights reserved by Renault. EDITION ANGLAISE Copying or translating, in part or in full, of this document or use of the service part reference numbering system is forbidden without the prior written authority of Renault. © RENAULT 2000

Contents Page 10 ENGINE AND PERIPHERALS Foreword Diagram Engine identification Tightening torques (in daNm) Lubrication circuit diagram Specifications Standard replacement Special tooling required Essential equipment Cylinder head exploded drawing Overhauling the engine Removing top engine Stripping the cylinder head Cleaning Checking the gasket face Redressing the valve seats Assessment and repair of rocker arm rails Rebuilding the cylinder head Cylinder block exploded drawing Removing bottom engine Extracting the con rod -pistons Refitting bottom engine Refitting and assembling con rod and pistons Fitting the rings Checking cylinder liner protrusion Refitting cylinder liner - pistons - con rods Checking piston protrusion Refitting top engine Tensioning procedure Notes on fitting accessory belts 10-1 10-2 10-4 10-7 10-14 10-16 10-38 10-39 10-44 10-45 10-46 10-51 10-54 10-54 10-55 10-56 10-57 10-65 10-66 10-74 10-75 10-84 10-85 10-85 10-86 10-89 10-98 10-108 10-114

ENGINE AND PERIPHERALS Foreword 10 110 ENGINE AND PERIPHERALS Foreword USING THE MANUAL There are two main sections in this manual: – technical specifications, – overhauling the engine. To repair the component on the vehicle, refer to the Workshop Repair Manual and Technical Notes for the vehicle. UNITS OF MEASUREMENT – All dimensions are given in millimetres (mm) (except where stated otherwise). – Tightening torques are expressed in decaNewtonmetres (daNm). Reminder: 1 daNm = 1.02 m.kg. – Pressures in bar Reminder: 1 bar = 100 000 Pa. TOLERANCES Tightening torques given without a tolerance must be accurate to within: – in degrees (± 3˚). – in daNm (± 10 %). 10-1

ENGINE AND PERIPHERALS Diagram 10 10-2 Diagram J8S TURBO ENGINE

ENGINE AND PERIPHERALS Diagram 10 10-3 J8S AND 852 ENGINES

ENGINE AND PERIPHERALS Engine identification 10 Engine identification The engine is identified by a plate riveted onto the cylinder block. It includes: A: the engine type B: the engine approval letter C: the manufacturer code D: the engine index E: the engine fabrication number F: the engine assembly works 10-4

ENGINE AND PERIPHERALS Engine identification 10 10-5 Engine Index Type Compression ratio Bore (in mm) Stroke (mm) Capacity (in cm 3 ) 852 700 710 720 750 1276 1344, 2354, 1354 Pxx3 Txx3 Vxx3 J8S 240 330 600 604 620 622 704 708 714 738 742 746 758 774 786 788 J115, S115 Rxx3 X480 X48A PxxF TxxK X486 B290 X488 B29W X488 X486, X48W TxxF J114 X487 X48P 21/1 86 89 2068

ENGINE AND PERIPHERALS Engine identification 10 10-6 Engine Index Type Compression ratio Bore (in mm) Stroke (in mm) Capacity (in cm 3 ) J8S 610 612 702 706 711 712 736 740 760 772 776 778 J63D, S63D J63E 1270 B296 1344 TA, 1354TA 1346, 1356, 1366 B296 X48, 6, V, V 4x4 B546 J635, S635 J634 J633 21.5/1 86 89 2068 J8S 784 800 814 X480 CJ XJ 21.5/1 86 89 2068

ENGINE AND PERIPHERALS Tightening torques (in daNm) 10 Tightening torques (in daNm) A 0.5 to 0,9 B 2.5 to 3 C 1.3 to 1.8 D 2 E 6 to 6.5 F 13 G 2.5 H 1.3 J 5 K 1.25 10-7

ENGINE AND PERIPHERALS Tightening torques (in daNm) 10 10-8 CYLINDER BLOCK * Preheating shunt nut connector: 0.25 daNm ** Aluminium sump : 1.4 to 1.7 daNm Metal sump : 1.25 daNm A 2 B 2 C 2.5

1991-2000 Renault Diesel Engine 852 J8S Service & Repair Manual

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