Page 693 of 2053
1B3 -- 144 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Notice
If max. length ’L’ of the 12-- sided bolt exceeds
53.6mm, replace it.
8. Install the chain tensioner.
Tightening Torque80 N∙m (59 lb-ft)
Notice
Replace the seal.
Before installation, by pumping in the oil approx. 10
times, fill the oil.
9. Remove the engine lock.
10. Check the TDC marking of OT on the crankshaft.
Page 715 of 2053
1B3 -- 166 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Installation Procedure
1. Fit the piston onto the connecting rod so that the ar-
row (15) and the locking slot (16) are facing in direc-
tion of the vehicle.
2. Coat the piston pin (15) with engine oil and insert it
by hand.
Notice
Do not heat up the piston.
3. Install the new snap ring (4) into the grooves (ar-
row).
4. Check the piston rings (1, 2, 3) and replace them if
necessary.
5. Install and arrange the piston rings to be evenly
120_from each ends gap.
Page 737 of 2053

D AEW OO M Y_2000
SECTION 1D3
OM600 ENGINE COOLING
Caution: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless other -
wise noted.
TABLE OF CONTENTS
Specifications 1D3 -- 1............................
General Specifications 1D3-- 1....................
Fastener Tightening Specifications 1D3 -- 1..........
Diagnosis 1D3 -- 2.................................
Cooling Circulation 1D3 -- 2........................
Thermostat Operation 1D3 -- 3....................
Cooling System Leakage Test 1D3-- 4..............
Maintenance and Repair 1D3 -- 5...................On-- Vehicle Service 1D3-- 5.........................
Drain and Filling of Coolant 1D3 -- 5................
Wat er Pum p 1D3 -- 6.............................
Water Pump Housing 1D3-- 8.....................
Cooling Fan Clutch 1D3 -- 10......................
Radiator 1D3-- 12................................
Cooling Sub-- System 1D3-- 14.....................
Thermostat 1D3 -- 16.............................
SPECIFICATIONS
GENERAL SPECIFICATIONS
ApplicationDescription
CoolantALUTEC P-- 78
Mixing Ratio (Water: anticorrosion)50 : 50
Capacity662LA10.5L -- 11Lpy
661LA9.5L -- 10L
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb-- FtLb-In
Water Pump Bolt10--89
Belt Pulley Bolt10--89
Water Pump Housing Return Pipe Bolt10--89
Thermostat Bolt10--89
Cooling Fan Clutch Socket Bolt (Center)4533--
Cooling Fan Clutch Socket Bolt (Side)10--89
Radiator Bolt3--7--27 -- 62
Coolant Sub-- tank Bolt3--7--27 -- 62
Page 740 of 2053
OM600 ENGINE COOLING 1D3 -- 5
D AEW OO M Y_2000
MAINTENANCE AND REPAIR
ON -- VEHICLE SERVICE
DRAIN AND FILLING OF COOLANT
Preceding Work : Removal of skid plate
Drain / Filling
1. Loosen the pressure cap of reservoir by 1 notch and
remove pressure and then loosen the cap.
Notice
Do not remove radiator cap when coolant is above
90°C.
2. Open the drain plug and drain the coolant.
Notice
Collect the coolant by using the proper bottle.
3. Remove the drain plug(1) and seal(2) of cylinder
block and drain the coolant.
4. Replace the seal to new one and tighten the drain
plug.
Installation Notice
Tightening Torque30 N∙m (22 lb-ft)
5. Tighten the drain plug of the lower radiator.
6. Fill the coolant through coolant reservoir -- tank.
Notice
DA proportion of 50% by volume of water / anticor-
rosion must be ensured.
7. After engine is running at idle speed, check the level
of coolant. If necessary, add enough specified cool-
ant.
Page 753 of 2053
D AEW OO M Y_2000
SECTION 1E3
OM600 ENGINE ELECTRICAL
Caution: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless other -
wise noted.
TABLE OF CONTENTS
Specifications 1E3 -- 1............................
General Specifications 1E3-- 1....................
Maintenance and Repair 1E3 -- 2...................
On-- Vehicle Service 1E3-- 2.........................Glow Plug 1E3-- 2...............................
Generator 1E3-- 6...............................
Starter Motor 1E3-- 8............................
SPECIFICATIONS
GENERAL SPECIFICATIONS
ApplicationDescription
Generator12V -- 75A
Starter12V -- 2.2kW
Glow Plug11. 5 V
Page 763 of 2053

D AEW OO M Y_2000
SECTION 1F3
OM600 ENGINE CONTROLS
Caution: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless other -
wise noted.
TABLE OF CONTENTS
Specifications 1F3 -- 1............................
Fastener Tightening Specifications 1F3 -- 1..........
Maintenance and Repair 1F3 -- 2...................
On -- Vehicle Service 1F3 -- 2.........................
Fuel System 1F3 -- 2.............................
Fuel Injection Pump Coding 1F3 -- 3................
Fuel Tank 1F3 -- 4...............................
Vacuum Control System Test 1F3 -- 5..............
Vacuum Pump Test 1F3 -- 10......................
Vacuum Pump 1F3 -- 12..........................
Vacuum Unit Replacement 1F3 -- 14...............
Idle Speed Adjustment 1F3 -- 15...................Fuel Pump Test 1F3 -- 17.........................
Fuel Pump 1F3 -- 20.............................
Injection Nozzle Test 1F3-- 21.....................
Injection Nozzles 1F3-- 24........................
Injection Nozzle Repair 1F3 -- 26...................
Removal and Installation of
Injection Timing Device 1F3 -- 29.................
Injection Timing Device 1F3 -- 34...................
StartofDeliveryTest
(Position Sensor, RIV Method) 1F3 -- 36..........
Fuel Injection Pump 1F3 -- 45.....................
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
ApplicationN∙mLb-- FtLb-In
Fuel Tank Mounting Nut28 -- 4721 -- 35--
Fuel Pump Pressure Line1310--
Fuel Injection Nozzle35 -- 4026 -- 30--
Fuel Injection Pipe1813--
Nozzle Tensioning Nut8059--
Screw Plug3022--
Left -- Hand Thread Bolt4634--
Page 765 of 2053
OM600 ENGINE CONTROLS 1F3 -- 3
D AEW OO M Y_2000
FUEL INJECTION PUMP CODING
Model Code
OM661 LA EnginePES 4M 55C 320 RS 167
OM662 LA EnginePES 5M 55C 320 RS 168
Fuel Injection Pump Code
Example) PES 5M 55C 320 RS 168
PPump
E Self -- Driven
S End Flange Mounting
5 Number of Cylinders (5EA)
MPumpSize
55 Element Diameter
C Modification Letter
320 Assembly Number
R Direction of Rotation (clockwise)
S188 Special Version
RSF Governor
R Governor
S Coil Spring
F Drive Governor
Component Location
1. Fuel Injection Pump
2. Vacuum Unit (Stop Unit)
3. Control Lever
4. PLA Vacuum Unit (Idle Speed Adjustment)
5. Governor
6. Fuel Pump
Page 772 of 2053
OM600 ENGINE CONTROLS 1F3 -- 15
D AEW OO M Y_2000
IDLE SPEED ADJUSTMENT
Service Data
EngineIdle Speed
OM661LA Engine750 -- 850 rpm
OM662LA Engine720 -- 820 rpm
Tools Required
667 589 00 21 00 TDC Pulse Generato
Commercial Tool
Digital Testere.g. Bosch, MOT 001.03g
Sun, DIT 9000
Adjustment Procedure
1. Connect the digital tester (1) and TDC pulse sender
unit (11).
2. Run the engine and warm up the coolant to
60~80_C.
TDC pulse generator 667 589 02 21 00
3. Disconnect the vacuum hose (4) from the PLA unit
to check idle speed with tester.
4. Check idle speed with tester.
OM 661LA Engine750 -- 850rpm
OM 662LA Engine720 -- 820rpm
Notice
To adjust idle speed, loosen the locking nut (6) of
PLA unit.