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Valmet 612 User Manual

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UALMET
diesel
3o,9
911
4tl
611
612
Woftshop
Manual
1
General
Cylinder head and
valve mechanism
11
optionat equipment
lnlet- and exhaust
system.
Turbocharger.
1. Edition
15. 1.1986
YAITIT
VALMET CorDorrllon.
Llnn.vuo,i Wo.ka
372i10 LINNAVUORI,
Flnl.nd
Tol.
(lntl.)+
358 31
il03
300
Tgl€x 2212E
vålll st
T.lohx
(lntl.l
+
358 31
403 2E3
12
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Valmet 612 Specifications

General IconGeneral
BrandValmet
Model612
CategoryEngine
LanguageEnglish

Summary

VALMET diesel Workshop Manual

TIGHTENING TORQUES

CYLINDER BLOCK AND FLYWHEEL HOUSING

Repair Instructions: Cylinder block and cylinder liners

Detailed procedures for cylinder block and liner maintenance and replacement.

FLYWHEEL HOUSING

WORK INSTRUCTIONS - CYLINDER BLOCK AND CYLINDER LINERS

A. MEASURING THE CYLINDER LINER WEAR

Procedure for measuring cylinder liner wear using a dial indicator.

CYLINDER BLOCK AND CYLINDER LINERS - CONTINUED

CYLINDER BLOCK AND CYLINDER LINERS - FITTING PROCEDURES

CYLINDER LINER FITTING

L. FITTING THE CYLINDER LINER

Detailed procedure for fitting cylinder liners, including measurements and alignment.

FLYWHEEL HOUSING PROCEDURES

B. REPLACING THE CRANKSHAFT REAR END SEAL

Instructions for removing and installing the crankshaft rear end seal.

CYLINDER HEAD AND VALVE MECHANISM - REPAIR INSTRUCTIONS

1. Cylinder head

Overview of repair procedures related to the cylinder head.

CYLINDER HEAD CONSTRUCTION

CYLINDER HEAD WORK INSTRUCTIONS

A. REMOVING THE CYLINDER HEAD

Step-by-step guide for safely removing the cylinder head from the engine.

CYLINDER HEAD WORK INSTRUCTIONS - REPLACEMENT

CYLINDER HEAD WORK INSTRUCTIONS - MACHINING AND GRINDING

F. MACHINING THE VALVE SEAT

Steps for machining damaged valve seats using specialized cutters or grinders.

CYLINDER HEAD WORK INSTRUCTIONS - FITTING

I. FITTING THE VALVES

Instructions for installing valves, springs, and split collets correctly.

J. FITTING THE CYLINDER HEAD 309, 311, 411

Procedure for installing the cylinder head on 309, 311, and 411 engines, including torque specs.

CYLINDER HEAD FITTING - 611, 612 ENGINES

K. FITTING THE CYLINDER HEAD 611, 612

Steps for fitting the cylinder head on 611 and 612 engines, including tightening sequences.

VALVE MECHANISM RECONDITIONING AND REPLACEMENT

A. RECONDITIONING THE VALVE MECHANISM

Procedure for checking and reconditioning valve tappets, push rods, and rocker arms.

B. REPLACING THE CAMSHAFT / CAMSHAFT GEAR

Steps for removing, inspecting, and replacing the camshaft and its gears.

VALVE CLEARANCE CHECKING AND ADJUSTMENT

C. CHECKING AND ADJUSTING THE VALVE CLEARANCES

Procedure for checking and adjusting valve clearances for various engine models.

CRANKCASE REPAIR INSTRUCTIONS

1. Crankshaft

Procedures for removing, checking, replacing gears, and installing the crankshaft.

2. Connecting rods and pistons

Instructions for removing, checking, and replacing connecting rods, pistons, and rings.

CRANKCASE CONSTRUCTION - Crankcase 311

COUNTERBALANCE MECHANISM 411

CRANKCASE REPAIR INSTRUCTIONS - CRANKSHAFT

A. REMOVING THE CRANKSHAFT

Procedure for removing the crankshaft from the engine, including oil draining and component removal.

CRANKCASE REPAIR INSTRUCTIONS - GEARS AND INSTALLATION

D. REPLACING THE CRANKSHAFT GEARS

Instructions for removing and installing crankshaft drive gears.

E. INSTALLING THE CRANKSHAFT

Procedure for installing the crankshaft, including bearing shells and torque specifications.

CRANKSHAFT COMPONENTS AND REPLACEMENT

CONNECTING RODS AND PISTONS - REMOVAL AND CHECKING

A. REMOVING THE CONNECTING ROD AND PISTON

Steps for removing the connecting rod and piston assembly from the cylinder.

B. CHECKING AND REPLACING THE CONNECTING ROD BEARINGS

Procedure for checking connecting rod bearing clearances and replacing bearings.

CONNECTING ROD INSPECTION AND WEIGHT CLASSES

D. INSPECTING THE CONNECTING ROD

Methods for inspecting the connecting rod for deflection and wear.

PISTON RINGS INSPECTION AND REPLACEMENT

F. INSPECTING AND REPLACING THE PISTON RINGS

Procedure for inspecting piston rings for side clearance and replacing them.

PISTON INSPECTION AND FITTING

G. INSPECTING THE PISTON

Visual inspection of the piston and pin, checking for cracks and measuring diameter.

PISTON AND CONNECTING ROD FITTING

J. FITTING THE PISTON AND THE CONNECTING ROD

Steps for fitting the connecting rod, piston rings, and piston into the cylinder.

COUNTERBALANCE MECHANISM 411 - SERVICE

FLYWHEEL SERVICE

TIMING GEAR ASSEMBLY - REPAIR INSTRUCTIONS

TIMING GEAR ASSEMBLY CONSTRUCTION

TIMING GEAR ASSEMBLY TYPES AND IDLER GEAR

TIMING GEAR HOUSING - REMOVAL AND RECONDITIONING

TIMING GEAR HOUSING FITTING

C. FITTING THE GEAR HOUSING

Instructions for fitting the gear housing, including backlash adjustment.

CRANKSHAFT FRONT END SHAFT SEAL REPLACEMENT

LUBRICATION SYSTEM - REPAIR INSTRUCTIONS

LUBRICATION SYSTEM OPERATION

OIL PUMP AND OIL FILTER

LUBRICATION SYSTEM WORK INSTRUCTIONS

LUBRICATION SYSTEM WORK INSTRUCTIONS - OIL COOLER

COOLING SYSTEM - REPAIR INSTRUCTIONS

COOLING SYSTEM CONSTRUCTION

COOLANT PUMP WORK INSTRUCTIONS - REMOVAL AND INSPECTION

COOLANT PUMP RECONDITIONING - SEPARATE BALL BEARINGS

COOLANT PUMP INSTALLATION

D. INSTALLING THE COOLANT PUMP

Procedure for installing the coolant pump, including gasket replacement and system filling.

INLET AND EXHAUST SYSTEM, TURBOCHARGER - REPAIR INSTRUCTIONS

INLET AND EXHAUST SYSTEM CONSTRUCTION AND TECHNICAL DATA

INLET AND EXHAUST SYSTEM WORK INSTRUCTIONS

TURBOCHARGER INSPECTION AND REMOVAL

TURBOCHARGER RECONDITIONING AND PARTS CLEANING

TURBOCHARGER REASSEMBLY AND INSTALLATION

D. INSTALLING THE TURBOCHARGER

Procedure for installing the turbocharger, ensuring proper lubrication and alignment.

INTERCOOLER INSTALLATION

FUEL SYSTEM - REPAIR INSTRUCTIONS

FUEL SYSTEM CONSTRUCTION AND OPERATION

INJECTION PUMP BOSCH "A" - ELEMENT AND PRESSURE VALVE

INJECTION PUMP BOSCH "P" - CONSTRUCTION AND ADJUSTMENT

FEED PUMP OPERATION AND TESTING

INJECTOR TYPES - BOSCH AND CAV

FUEL SYSTEM REPAIR - FEED PUMP

A. BLEEDING THE FUEL SYSTEM

Procedure for bleeding air from the fuel system using the hand pump.

FEED PUMP REPAIR AND VALVE CHECK

INJECTION PUMP BOSCH "A" - CHECKING INJECTION TIMING

A. CHECKING THE INJECTION TIMING

Procedure for checking the injection pump timing using a check pin and timing marks.

INJECTION PUMP BOSCH "A" - TIMING ADJUSTMENT AND REMOVAL

B. ADJUSTING THE INJECTION TIMING

Instructions for adjusting injection pump timing based on retard or advance.

INJECTION PUMP BOSCH "P" - MOUNTING AND PRESSURE VALVE

D. MOUNTING THE INJECTION PUMP

Procedure for mounting the injection pump, including lubrication and torque settings.

INJECTION PUMP ADJUSTMENT - IDLING SPEED

F. ADJUSTING THE IDLING SPEED

Procedure for adjusting engine idling speed for the injection pump.

C. ADJUSTING THE IDLING SPEED

Procedure for adjusting engine idling speed for the injection pump.

INJECTION PUMP BOSCH "P" 611/612 - MOUNTING

A. MOUNTING THE INJECTION PUMP

Instructions for mounting the injection pump on engines with a right-side compressor.

INJECTION PUMP BOSCH "P" - TIMING AND ADJUSTMENT

B. CHECKING AND ADJUSTING THE INJECTION TIMING

Procedure for checking and adjusting the injection timing for the Bosch "P" pump.

INJECTORS - DISMOUNTING AND TESTING

INJECTOR SERVICE - CHECKING AND ASSEMBLY

C. DISASSEMBLING, CHECKING AND ASSEMBLING THE INJECTOR

Detailed instructions for disassembling, cleaning, checking, and reassembling injectors.

INJECTOR INSTALLATION

D. INSTALLING THE INJECTOR IN THE ENGINE

Procedure for installing injectors into the engine, including sealing and torque.

ELECTRICAL EQUIPMENT - INDEX

ELECTRICAL EQUIPMENT - ALTERNATOR TECHNICAL DATA

ALTERNATOR TECHNICAL DATA - LUCAS AND BOSCH MODELS

STARTER SPECIFICATIONS

ACCESSORIES - INDEX

CONTROLLING THE OPERATION OF STOP SOLENOID

COMPRESSOR BENDIX (611/612 ENGINES) - SERVICE

COMPRESSOR SERVICE - DISASSEMBLY AND REASSEMBLY

INDUSTRIAL CLUTCH SERVICE AND ADJUSTMENT

INDUSTRIAL CLUTCH SERVICE - ADJUSTMENT AND REMOVAL

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