Page 490 of 2053
1F2 -- 72 M161 ENGINE CONTROLS
D AEW OO M Y_2000
COOLING FAN
KAB1F290
Failure
CodeDescriptionTrouble AreaMaintenance Hint
44Cooling fan (HI) relay
short circuit to powerCooling fan short circuit to
powerDInspection the Engine Control Module
(ECM) pin 35 about short circuit or
openwithbadcontact
45
Cooling fan (HI) relay
short circuit to ground or
openCooling fan short circuit to
ground or open
openwithbadcontact
DInspection the power source
DInspection the cooling fan
DInspection the ECM
Circuit Description
Ignition voltage is supplied directly to the cooling fan relay coil. The ECM controls the relay by grounding the control
circuit. When the ECM is commanding a command ON, the voltage of the control circuit should be low (near 0 volt).
When the ECM is commanding the control circuit should be high (near battery voltage). If the fault detection circuit
senses a voltage other than what is expected, the fault line status will change causing the fault code to set.
Page 552 of 2053
1B3 -- 2 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
Engine Assembly
ApplicationNSmLb-- FtLb-- In
Skid Plate Bolt28 -- 4721 -- 35--
Drain Plug Bolt3022--
Coolong Fan Shroud Bolt3--7--27 -- 62
Control Linkage Nut8--186--13--
Clutch Linkage Cylinder Nut20 -- 3415 -- 25--
Exhaust Manifold Bolt3022--
Propeller Shaft Bolt & Nut (Axle)70 -- 8052 -- 59--
Propeller Shaft Bolt & Nut (T/C)81 -- 8960 -- 66--
Engine Mounting Nut50 -- 7537 -- 55--
Crankshaft Assembly
ApplicationNSmLb-- FtLb-- In
Cooling Fan Belt Pulley Bolt10--89
Socket Bolt2317--
Tighten The Bolt200 / 90_148 / 90_--
End Cover Bolt10--89
Crankshaft Bearing Cap Bolt55 / 90_41 / 90_--
Ball Bearing45 / 90_33 / 90_--
Camshaft Sprocket Bolt25 / 90_18 / 90_--
Oil Pump Sprocket Bolt2518--
Piston
ApplicationNSmLb-- FtLb-- In
Connecting Rod Bolt35 / 90_26 / 90_--
Flywheel
ApplicationNSmLb-- FtLb-- In
12-- Sided Stretch Bolt45 / 90_33 / 90_--
Page 558 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 9
D AEW OO M Y_2000
SPECIAL TOOLS TABLE (Cont’d)
601 589 02 23 00
Go/No Go Gauge
105 589 03 15 00
Drift (for Intake)
103 589 02 15 00
Drift (for Exhaust)
346 589 00 63 00
Super Cooling Box
601 589 05 15 00
Drift (for Intake)
601 589 06 15 00
Drift (for Exhaust)
000 589 10 53 00
Reamer (for Exhaust)
000 589 21 53 00
Reamer (for Intake)
Page 563 of 2053
1B3 -- 14 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
8. Disconnect the upper coolant hose from the radia-
tor.
9. Loosen the bolt and remove the coolant pipe and
cooling fan shroud.
Installation Notice
Tightening Torque3--7N∙m (27-- 62 lb-in)
10. Remove the hoses (air intake to intercooler, inter-
cooler to intake duct).
11. Remove the pipes connected to intercooler.
Page 572 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 23
D AEW OO M Y_2000
TENSIONING DEVICE
Preceding Work : Removal of cooling fan
1 Bolt 21N∙m (15 lb-ft) ......................
2 Damper
3 Nut 21N∙m (15 lb-ft) .......................
4 Tensioning Lever
5 Guide Rail Pin
6Bolt
7PolyV--Belt
8 Belt Pulley
9 Bolt 10N∙m (89 lb-in) .....................10 Tensioning Pulley
11 Socket Bolt 29N∙m (21 lb-ft) ................
12 Closing Cover
13 Washer
14 Tensioning Lever
15 Fit Bolt 100N∙m (74 lb-ft) ...................
16 Closing Cover
17 Spring
18 Bolt 20N∙m (15 lb-ft) ......................
Page 586 of 2053

OM600 ENGINE MECHANICAL 1B3 -- 37
D AEW OO M Y_2000
CYLINDER HEAD
1 Fuel Injection Pipe 18N∙m (13 lb-ft) ..........
2 Cylinder Head
3 Gasket Replace..........................
4 Bolt 25N∙m (18 lb-ft) ......................
5 Washer
6 Clamp
7 Heater Feed Pipe
8Bolt
9 Washer
10 Bolt
11 Nozzle Washer Replace...................
12 Fuel Injection Nozzle 35 -- 40 N∙m(26--30 lb-ft)
13 Hexagon Socket Bolt 25 N∙m (18 lb-ft) ......
14 Washer
15 Bolt 25 N∙m (18 lb-ft) .....................
16 Cylinder Head Bolt See Table..............
17 Cylinder Head Cover
18 Bolt 10 N∙m (89 lb-in) .....................
19 Gasket
20 Camshaft21 Camshaft Drive Sprocket Replace...........
22 Washer
23 Bolt(12-- Sided) 25N∙m (18 lb-ft) + 90_ .......
24 Sliding Rail
25 Sliding Rail Pin
26 Sliding Rail Pin
27 Chain Tensioner 80 N∙m (59 lb-ft) ...........
28 Gasket Replace..........................
29 Cooling Fan Check.......................
30 Hexagon Socket Bolt 45 N∙m (33 lb-ft) ......
31 Tensioning Lever
32 Bolt 25 N∙m (18 lb-ft) .....................
33 Bolt
34 Nut 23 N∙m (17 lb-ft) ......................
35 Fuel Filter
36 Turbo Charger
37 Intake Duct
38 Gasket Replace..........................
39 Intake Manifold
Page 589 of 2053
1B3 -- 40 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Disassembly Procedure
1. Completely drain the coolant from the radiator and
cylinder block.
2. Remove the cooling fan shroud.
3. Hold the fan with counter holder and remove the bolt
and then remove the cooling fan.
Notice
Keep the fan in vertical position.
Counter Holder 603 589 00 40 00
4. Remove the bracket oil dipstick tube.
5. Remove the nut.
6. Remove the nut on the tensioning lever and insert
the rod(F12’ 180mm). By pushing the rod to the ar-
row direction, pull back the bolt.
7. Push the tensioning lever to the opposite direction to
release the spring tension and remove the poly V--
belt.
Page 611 of 2053
1B3 -- 62 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
42. Install the poly V-- belt.
Notice
Be careful not to contaminate the belt.
43. By inserting a rod into the tensioning lever upper
hole and pulling the rod, install the bolt and then
tighten the nut.
Tightening Torque23 N∙m (17 lb-ft)
44. Install the oil dipstick tube bracket.
Tightening Torque10 N∙m(89lb-in)
45. Hold the cooling fan with the counter holder and
tighten the bolt.