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General| Engine Model | TWD1620G |
|---|---|
| Number of Cylinders | 6 |
| Compression Ratio | 17.5:1 |
| Fuel System | Common Rail |
| Aspiration | Turbocharged |
| Cooling System | Freshwater cooling |
| Emission Compliance | IMO Tier II |
Emphasizes shared responsibility for correct service, parts, and adherence to specifications.
Provides a table of torque values for common bolt dimensions used in repairs.
Explains the method of angle tightening for fasteners using a protractor.
Discusses types of sealants and locking liquids and their proper application.
Describes the individual cast iron cylinder heads and their valve configuration.
Details the cast iron cylinder block, its bearing caps, and reinforcing plates.
Explains the direct contact sealing method used for cylinder liners and cylinder heads.
Explains how the valve mechanism operates via the camshaft and tappets.
Describes the camshaft's position, journaling, and drive mechanism.
Details the integrated timing gears, their function, and belt-driven components.
Describes the crankshaft's bearings and seals, and piston/rod construction.
Provides step-by-step instructions and special tools for attaching the engine to a fixture.
Details the procedure and special tools for performing a compression test on the engine.
Outlines steps for preparing the engine for access, specific to TAD1630/TAD1631 models.
Outlines steps for preparing the engine for access, specific to TID162/TWD1620/TWD1630/TD164 models.
Details steps for removing cylinder head bolts and lifting off the cylinder head.
Guides on removing valves and valve springs, and cleaning parts.
Details the steps for performing the pressure test, including equipment setup.
Explains how to check cylinder head face for unevenness and the process for face-grinding.
Guides on measuring valve guide wear using a new valve and dial indicator.
Details the process for pressing out and installing new valve guides using special tools.
Explains how to replace valve seats, including cutting old seats and fitting new ones.
Details how to grind valves to ensure proper sealing and checks for valve stem condition.
Guides on oiling valve stems, fitting valves, springs, and collets, and cleaning plugs.
Guides on cleaning block surfaces, preparing liner height, and tightening head bolts.
Guides on honing cylinder liners to restore the original pattern, especially after ring replacement.
Explains the process of replacing connecting rod bushings and the requirement for line boring.
Details connecting a pressure gauge to check oil pressure at different engine speeds.
Guides on cleaning the filter bracket, removing old filters, and fitting new ones.
Provides step-by-step instructions for replacing the oil cooler, including draining coolant and fitting new seals.
Details testing the oil cooler for leaks by submerging it in water at specific pressures.
Provides detailed steps for removing the injection pump, including preparation and coupling removal.
Outlines the procedure for fitting and adjusting the injection pump timing using special tools.
Details using a dial indicator and lifter measurement to set the injection pump timing.
Guides on rotating the pump coupling to achieve the correct timing and torqueing the clamping screw.
Guides on checking the injection pump timing using light-emitting diodes.
Details rotating the pump coupling, checking timing, and fitting plugs.
Guides on rotating the pump coupling until light-emitting diodes illuminate for timing.
Details tightening the pump coupling clamping bolt and checking the setting.
Guides on checking the final injection pump timing using the instrument.
Details the types of turbochargers used and their operating principle involving exhaust gases and compressor wheels.
Guides on connecting a pressure gauge to check boost pressure under load and adjusting for ambient temperature.
Lists potential causes for low boost pressure, including seals, air filters, and turbocharger condition.
Guides on marking relative positions, removing compressor cover, turbine housing, and bearing housing.
Guides on removing the turbine shaft and wheel, compressor wheel, and bearings.
Details inspecting bearing housing, compressor wheel, shaft, cover, and turbine housing for damage.
Guides on fitting snap rings, bearings, journal bearings, and compressor wheel.
Guides on fitting the shaft, bearings, thrust bearing, and compressor wheel, including torque values.
Guides on torquing the compressor lock nut and fitting the bearing assembly into the compressor cover and turbine housing.
Guides on clamping the turbine inlet flange, removing covers, and withdrawing the shaft.
Details fitting piston rings, bearings, and heat shields during assembly.
Guides on fitting the shaft, bearings, thrust bearing, and compressor wheel, including torque values.
Guides on checking charge air hoses and cooler for oil or foreign objects after turbo failure.
Emphasizes checking engine oil, oil cleaner, and intake system before installing a new turbocharger.
Guides on connecting a pressure tester to check the charge air cooler for leaks.
Guides on ensuring correct coolant volume, venting the system, and avoiding air pockets.
Provides a cleaning method using Volvo radiator cleaner or oxalic acid.
Guides on checking radiator and charge air cooler for blockages and straightening bent cells.
Details fitting a cap, connecting the tester, and applying pressure to check for leaks.
Provides safety warnings and steps for starting the engine using an auxiliary battery.
Outlines safety precautions and preparation steps for arc welding on the engine.
Addresses causes and remedies for the starter motor not turning the engine or turning slowly.
Covers causes like air in fuel system, no fuel, or blocked combustion air intake.
Lists causes and remedies for engine overheating.
Lists causes and remedies for low coolant temperature.
Addresses issues like air in fuel, no fuel, insufficient preheating, or faulty injectors.
Covers causes and remedies for the engine continuing to run after the stop control is activated.
Addresses causes like engine overload, insufficient fuel flow, or poor ventilation.
Covers faulty injection pump settings, smoke limiter issues, and stop lever position.
Addresses causes like tripped fuses, poor connections, or faulty stop solenoid/switch.
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