Workshop Repair Manual Technical Note 3736A - Diesel Engine G9T-G9U High Pressure-Common Rail - 4 cast iron cylinders

Oct 23, 2026

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Workshop repair manual technical note 3736A describing the G9T-G9U diesel high pressure Common Rail system and engine/peripherals section. Covers vehicle engine identification, tightening torques and units, tolerances, cleanliness and safety requirements, and an operating diagram. Explains low- and high-pressure pump functions, regulator control, injector rail distribution, and computer control of injection pressure, timing, and individual injector operation. Includes detailed overhaul procedures and related specifications for cylinder head, pistons, crankshaft, bearings, and reassembly.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages180

Reading Time7 h 34 min

AccessFree to download

10A ENGINE AND PERIPHERALS

Preface

Cleanliness-Safety

Engine identification

Tightening torques (in daNm or degrees)

Specifications

Overhauling the engine

Removing the upper engine

Adjusting the timing

Removing the injector holders

Dismantling and cleaning the cylinder head

Reassembling the cylinder head

Removing peripherals

Refitting peripherals

Con rods/piston assembly

Fitting the piston rings

Replacing oil pump drive pin and deflector

Fitting crankshaft seals

Special notes concerning balance shafts

Fitting intermediate shaft roll pins

Replacing play compensation sprockets

High pressure pump sprocket replacement method

Timing belt tension

Checking the tension and timing

Workshop Repair Manual Technical Note 3736A Diesel Engine G9T-G9U High Pressure-Common Rail 4 cast iron cylinders | Vehicle | Type | Engine | | --- | --- | --- | | Master | XDXG
XDXN
XDXN
XDXM XDXU-XDXM
XDXM
XDXU
XDXV | G9T 720
G9T 722
G9T 750
G9U 720
G9U 724
G9U 750
G9U 754 | | Espace (JE0X) | XE0K-XE0S | G9T 710 | | Espace IV | JK0H | G9T 742, 743 | | Laguna II | XG0F | G9T 700, 702, 703 | | Vel Satis | BJ0E-BJ0F-BJ0G-BJ0MBJ0F-BJ0GBJ0F | G9T 702
G9T 700, 701
G9T 703 | | Avantime | DE01 | G9T 712 | | Trafic | XLXD | G9U 730 | | Supersedes Workshop Repair Manual MOT. G9T | | | | | --- | --- | --- | --- | | 77 11 321 202 | APRIL 2003 | | EDITION ANGLAISE | | "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." | | All copyrights reserved by RENAULT.
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 2002 | | | | Contents 10A ENGINE AND PERIPHERALS Preface Cleanliness-Safety Engine identification Tightening torques (in daNmor degrees) Specifications Cylinder head Pistons Con rods Crankshaft Bearing shells Piston base cooling jets Preparing the engine to be mounted on the support Consumables Precaution Parts to be replaced after removal Standard replacement Special tooling required Equipment required Page 10A-1 10A-2 10A-10 10A-13 10A-17 10A-26 10A-29 10A-31 10A-32 10A-33 10A-34 10A-38 10A-38 10A-38 10A-39 10A-40 10A-45 Overhauling the engine Removing the upper engine Adjusting the timing Removing the injector holders Dismantling the cylinder head Cleaning Checking the gasket face Checking the camshaft longitudinal clearance Reassembling the cylinder head Removing the peripherals Extracting the gudgeon pins Fitting con rod bearing shells Refitting the peripherals Con rods/piston assembly Fitting the piston rings Replacing the oil pump drive pin oil deflector Fitting the flywheel end crankshaft seal Special notes concerning engines equipped with balance shafts Special notes concerning engines not equipped with balance shafts Fitting the intermediate shaft roll pins Replacing the play compensation sprockets Method for replacing the high pressure pump sprocket Fitting intermediate shaft No. 2 sealand the timing end crankshaft seal Fitting the flywheel end crankshaft seal Refitting the upper engine Inlet rocker shaft Exhaust rocker shaft Fitting the camshaft seals Timing adjustment method Timing belt tension Checking the tension and timing Page 10A-47 10A-50 10A-61 10A-64 10A-66 10A-66 10A-67 10A-68 10A-72 10A-75 10A-75 10A-79 10A-88 10A-95 10A-96 10A-96 10A-100 10A-107 10A-111 10A-114 10A-116 10A-119 10A-123 10A-123 10A-124 10A-124 10A-138 10A-147 10A-149 10A-151 ENGINE AND PHERALS Foreword 10A USING THE MANUAL There are two main sections in this manual: – technical specifications, – overhauling the engine. For repairing vehicle components, refer to the Workshop Repair Manual and Technical Notes for the vehicle. UNITS OF MEASUREMENT – All dimensions are given in millimetres ( mm ) (unless stated otherwise) . – Tightening torques are expressed indecaNewtonmetres (daNm) . Reminder: [1 daNm = 1.02 m.kg](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 %) . ENGINE AND PERIPHERALS Cleanliness-Safety 10A OPERATION The " Common Rail" high press

FAQs

What is the Common Rail high pressure direct injection system described in this manual?

It is a sequential diesel fuel injection system that reduces operating noise and pollutant emissions while producing high torque at low engine speeds through pre-injection.

How does the fuel supply path work during starting and after?

During starting, the low pressure (booster) pump supplies the high pressure pump via the pressure regulator filter and fuel filter at 2 to 4 bar. The high pressure pump then generates high pressure transmitted to the injector rail.

Why are cleanliness and safety rules mandatory for this system?

The document explicitly requires following the cleanliness and safety advice specified for any work carried out on the high pressure injection system to prevent issues during maintenance.

Oct 23, 2026

Upload by aboduw