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Description
Covers Mercedes Benz OM441, OM442, OM443, OM444 engine models listed
This manual covers service and overhaul of the Mercedes Benz OM441, OM442, OM443, OM444 diesel engine. It includes detailed specs, illustrations and service procedures to guide the mechanic with correctly repairing the diesel engine to the manufacturer’s specifications. This downloadable engine service manual is also known as the repair manual or workshop manual.
PDF Contents:
Installation overview Illustrations, Sectional views Special tools Technical data, Tightening torques Reconditioning tapped holes with Heli-coil inserts
Exploded views Removing and installing cylinder head cover Removing cylinder head Installing cylinder head Machining cylinder head Removing and installing oil separator Sealing timing case cover Renewing shaft seal at front of housing cover Removing and installing timing case Renewing shaft seal in timing case Removing and installing oil sump Measuring projection of cylinder liner Removing and installing, sealing cylinder liner Making second annular groove in cylinder liner Machining seat of collar in crankcase Eliminating signs of corrosion on plane face of crankcase
Exploded views Renewing guide bearing in flywheel Removing and installing flywheel Machining flywheel Renewing starter ring gear Removing and installing vibration damper or hub Renewing race on the crankshaft Renewing race on the flywheel Removing pistons Installing pistons Renewing piston rings Renewing bearings of conrod Removing, renewing bearings of, and installing crankshaft Grinding crankshaft
Exploded views Testing compression pressure Adjusting valve clearance Renewing rocker arms Renewing valve springs Installing valve stem seals Removing and installing valves Machining valve seats Grinding valves Removing and installing valve guides Renewing valve seat rings Testing timing by means of valve stroke Removing and installing camshaft Checking valve stroke Renewing camshaft bearings Checking end play of camshaft Amendment note
Injection pumps Installation overview Exploded views Bleeding fuel system Testing start of delivery Removing and installing injection pump Removing and installing injection nozzle with nozzle holder Testing injection nozzle Disassembling, cleaning and assembling nozzle holder and injection nozzle
Exploded views, Sectional views Turbocharger-Troubleshooting Renewing fuel filter Removing and installing turbocharger Testing turbocharger Disassembling and reassembling turbocharger
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Disassembling and reassembling air compressor Renewing V-belt
Removing and installing intake manifold Removing and installing exhaust manifold Checking exhaust brake setting Adjusting exhaust brake
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Removing and installing starter Removing and installing alternator
Measuring oil consumption/Oil consumption test sheet Removing and installing oil cooler Disassembling and reassembling oil cooler Removing and installing oil filter element Removing and installing pressure relief valve on oil pump Removing and installing oil filter bypass valve Removing and installing oil pumps Disassembling and reassembling oil pumps Removing and installing oil spray nozzle Renewing oil pressure sensor
Removing and installing coolant regulator Testing coolant regulator Removing grease and lime from coolant system Disassembling and reassembling coolant pump
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Testing road speed and engine speed limiter Amendment note