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## 07 Mechanical/Electronic Injection (KE) - M103

> Maintenance Jobs - 1986 through 1993

- 0780 - Replacing fuel filter

> General

- 07.3-0001 - Additional designations for models and components
- 07.3-0002 - Summary of models and components
- 07.3-0004 - Vehicle features
- 07.3-0005 - Influencing variables of mechanical/electronic mixture adaptation
- 07.3-0013 - Function diagram KE injection

> Testing

- 07.3-0121 - Testing electrical components of the KE injection system
- 07.3-0128 - Wiring diagrams
- 07.3-0266 - Retrofitting second fuel pump. model 124.026/030 - (Tech Mods)
- 07.3-1100 - Testing, adjusting engine
- 07.3-1122 - Testing kickdown switch
- 07.3-1203 - Testing engine output and exhaust emission on the roller dynamometer
- 07.3-1333 - Determining fuel consumption by driving on the road
- 07.3-1603 - Testing fuel pressures and internal leak tightness
- 07.3-1604 - Testing restrictor in fuel distributor for clear passage
- 07.3-1607 - Testing starting valve actuation
- 07.3-1609 - Performing fuel quantity comparison measurement

> Removal, installation operations

- 07.3-1660 - Replacing seal for control plunger
- 07.3-1665 - Replacing, centering air flow sensor plate and checking, adjusting zero position of air flow sensor plate
- 07.3-1668 - Removing and installing mixture control unit with air guide housing
- 07.3-1674 - Replacing fuel distributor - (Tech Mods)
- 07.3-1683 - Removing and installing fuel accumulator
- 07.3-1686 - Replacing air flow sensor - (Tech Mods)
- 07.3-1689 - Replacing, adjusting throttle valve switch
- 07.3-1692 - Replacing electrohydraulic actuator
- 07.3-1698 - Removing and installing KE control unit - (Tech Mods) - (Tech Mods)

> Some more testing

- 07.3-2006 - Testing electronic idle speed control
- 07.3-2053 - Testing, adjusting idle speed or special exhaust emissions test (ASU)
- 07.3-2320 - Performing cold start
- 07.3-2353 - Testing starting device - (Tech Mods)
- 07.3-5203 - Testing on/off ratio (USA) as of 1986 - (Tech Mods)
- 07.3-5303 - Replacing oxygen sensor
- 07.3-5563 - Removing and installing fuel filter
- 07.3-5701 - Testing fuel pump

> Fuel pump

- 07.3-5710 - Removing and installing fuel pump - (Tech Mods) - (Tech Mods) - (Tech Mods)
- 07.3-5770 - Removing and installing fuel pump set - (Tech Mods)
- 07.3-5792 - Testing fuel pump relays (except engine 103.984 and (USA) (J) as of model year 1990) - (Tech Mods)
- 07.3-5820 - Replacing non-return valve for fuel pump
- 07.3-5860 - Replacing rubber rings or rubber stop for fuel pump set

> Throttle valve and injection valves

- 07.3-6210 - Removing and installing throttle valve body - (Tech Mods)
- 07.3-6500 - Testing injection valves - (Tech Mods)
- 07.3-6520 - Removing and installing injection valves - (Tech Mods)

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