MAC TOOLS MW250 Betriebsanleitung PDF herunterladen (Seite 277)

TM 5-4310-452-14

Section II. ENGINE MAINTENANCE

Paragraph Page

Number Title Number

5-3 Engine Compression Check ............................................................................................ 5-5

5-4 Top Dead Center (TDC) Setting ...................................................................................... 5-6

5-5 Engine Replacement ....................................................................................................... 5-8

5-6 Engine Block Repair ....................................................................................................... 5-13

5-7 Cylinder Head Maintenance ............................................................................................ 5-18

5-8 Cylinder Replacement ..................................................................................................... 5-21

5-9 Vibration Damper and V-belt Pulley Replacement ........................................................... 5-23

5-10 Crankshaft Replacement ................................................................................................. 5-25

5-11 Flywheel Maintenance .................................................................................................... 5-27

5-12 Pistons and Connecting Rods Maintenance ..................................................................... 5-29

5-13 Valve Train Mechanism Maintenance ............................................................................. 5-32

5-14 Timing Gears Replacement . ........................................................................................... 5-34

5-15 Camshaft Replacement ................................................................................................... 5-36

5-16 Oil Pan Replacement ...................................................................................................... 5-37

5-17 Oil Pump Replacement ................................................................................................... 5-38

5-18 Oil Lines Replacement..................................................................................................... 5-39

5-3. ENGINE COMPRESSION CHECK.

This Task Covers: Engine Compression Check

Initial Setup:

Equipment Conditions: Tools/Test Equipment:

• Engine off. • General mechanic's tool kit

• Left door assembly open. • Auto fuel and electrical system repair tool kit

ENGINE COMPRESSION CHECK

1. Start and run engine without a load for 10 minutes (see paragraph 2-12).

2. Shut down the engine (see paragraph 2-13).

3. Remove fuel injector and install adapter, hose, and gage in place of fuel injector (see paragraph 5-19).

4. Start engine and record pressure reading of gage. Pressure should be between 290-406 psi [2000-2840 kPa). If

pressure reading is not between 290-406 psi (2000-2840 kPa) , disassemble engine block and repair as necessary

(see paragraph 5-6).

5. Remove adapter, hose, and gage and install fuel injector (see paragraph 5-19).

6. Repeat steps 1 through 5 and check compression in the 3 remaining cylinders.

FOLLOW-ON TASKS:

• Close left door assembly.

5-5

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MAC TOOLS MW250 Betriebsanleitung Seite 277