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## 01 General Engine Work - M103

> Maintenance Jobs - 1986 through 1993

- 0101 - Engine oil and filter change
- 6190 - Removing and installing engine compartment lower panel

> Service Information

- 00/57A - Revised checking/correcting oil level procedure

> General

- 01-0010 - Engine and model survey
- 01-0085 - Warning instructions when hood open
- 01-0100 - Testing compression pressure
- 01-0110 - Cranking engine with starter
- 01-0150 - Testing cylinders for leaks
- 01-0200 - Inspecting, assessing cylinders with inspection lamp
- 01-0300 - Removing and installing engine
- 01-0400 - Function description of crankcase ventilation
- 01-0500 - Removing and installing cylinder head cover

> Crankcase

- 01-1000 - Notes regarding crankcase
- 01-1100 - Measuring, drilling and honing cylinder bores
- 01-1200 - Facing crankcase contact surface
- 01-1220 - Servicing threaded holes for cylinder head bolts
- 01-1300 - Cleaning, sealing main oil galleries
- 01-1400 - Replacing core plug in crankcase

> Covers

- 01-2100 - Removing and installing timing case cover
- 01-2120 - Removing and installing front cover at top
- 01-2140 - Replacing radial seal in front cover
- 01-2220 - Removing and installing closing cover
- 01-2240 - Checking for leaks at rear of engine

> Oil pan

- 01-3100 - Removing and installing oil sump
- 01-3200 - Removing and installing oil sump (4MATIC)

> Cylinder head

- 01-4000 - Notes regarding cylinder head
- 01-4050 - Checking, tightening cylinder head bolts
- 01-4070 - Servicing spark plug threads in cylinder head
- 01-4150 - Removing and installing cylinder head
- 01-4180 - Checking, facing cylinder head contact surface
- 01-4190 - Widening camshaft bearing bores (repair size)
- 01-4192 - Servicing threads for camshaft bearing cap bolts
- 01-4200 - Pressure-testing cylinder head
- 01-4300 - Cleaning, sealing oil longitudinal gallery in cylinder head

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