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Sisu Diesel 634 - User Manual

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WORKSHOP MANUAL
SISUDIESEL 320
420
620
8366 40634 634

Table of Contents

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Summary

SAFETY INSTRUCTIONS

TECHNICAL DATA

Cylinder block

Specifications for cylinder block dimensions and features.

Cylinder head

Specifications for cylinder head dimensions, valve guides, and seats.

Valves, rockers and tappets

Specifications for valve train components like clearance, lift, and stem diameter.

Crankshaft

Specifications for crankshaft journals, bearings, and end float.

Connecting rod

Specifications for connecting rod bushings, big end bore, and clearance.

Piston, rings and pin

Specifications for piston ring grooves, gaps, and piston pin fit.

Turbocharger

Specifications for turbocharger shaft end float and radial clearance.

TIGHTENING TORQUES

CONSTRUCTION

Crank mechanism

Description of the crankshaft's material, hardening, and support.

Lubricating system

Detailed description of the engine's pressure lubricating system.

The cooling system

Description of the engine's cooling system components and circulation.

Inlet and exhaust system

Description of the inlet and exhaust systems, including air filters and manifolds.

1. CYLINDER BLOCK

H. Fitting cylinder liner

Detailed procedure for fitting cylinder liners and checking their height.

3. CYLINDER HEAD

I. Fitting cylinder head

Detailed procedure for fitting the cylinder head, including bolt tightening.

4. VALVE MECHANISM

B. Changing camshaft;camshaft gear

Steps for removing and fitting the camshaft and its gear.

C. Adjusting valves

Procedure for adjusting valve clearances for different engine types.

5. CRANKSHAFT

A. Removing crankshaft

Steps for removing the crankshaft, including oil sump and bearing caps.

E. Fitting crankshaft

Steps for fitting the crankshaft, including bearing lubrication and end float check.

6. CONNECTING RODS AND PISTONS

9. TIMING GEAR ASSEMBLY

10. LUBRICATION SYSTEM

11. COOLING SYSTEM

12. INLET AND EXHAUST SYS TEM

13. FUEL SYSTEM

IN -LINE FUEL INJECTION PUMP

Technical data for Bosch A/P type injection pumps.

F. Checking injection timing (dy namic)

Detailed procedures for checking injection timing using a meter.

G. Adjusting fuel injection timing

Steps for adjusting the fuel injection timing by rotating the pump.

15. ELECTRICAL SYSTEM

B. Starters

Specifications and tightening torques for Magneti Marelli and Bosch starters.

Sisu Diesel 634 Specifications

General IconGeneral
Engine TypeDiesel
Cylinders6
ConfigurationInline
AspirationTurbocharged
Fuel SystemDirect Injection
Cooling SystemLiquid-cooled

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