Page 773 of 2053
1F3 -- 16 OM600 ENGINE CONTROLS
D AEW OO M Y_2000
5. Ensure not to damage the idle spring in the governor
and adjust idle speed by turning the PLA unit (5)
slowly.
ClockwiseRPM Decrease
CounterclockwiseRPM Increase
Notice
Do not rotate the PLA unit over 1/2 turn from the
position marking. If do, idle spring in the governor
will be severely damaged.
6. After adjustment, tighten the locking nut and place
the position marking with different color of paint.
Notice
If there are no changes in idle speed with PLA unit
adjustment, perform the service at a BOSCH Ser-
vice Center.
7. Connect the vacuum pump to the PLA vacuum unit
and build up vacuum approx. 500mbar. If engine
rpm increases by approx. 100rpm, It is normal.
Vacuum Pump 001 589 73 21 00
8. Connect the vacuum line (4).
9. Switch on all ancillaries and check the idle speed.
Page 777 of 2053
1F3 -- 20 OM600 ENGINE CONTROLS
D AEW OO M Y_2000
FUEL PUMP
1 Fuel Injection Pump
2 Pressure Line 13N∙m (10 lb-ft) ..............
3 Suction Line
4 Hose Clip Replace........................5 Gasket Replace..........................
6 Spring Lock Washer
7 Hexagon Nuts
8 Fuel Pump
Page 786 of 2053
OM600 ENGINE CONTROLS 1F3 -- 29
D AEW OO M Y_2000
REMOVAL AND INSTALLATION OF INJECTION TIMING DEVICE
Preceding Work : Removal of vacuum pump
1 Cylinder Head Cover
2 Bolt 10N∙m (89 lb-in) .....................
3 Gasket Replace..........................
4 Fuel Injection Pump
5 Seal Replace.............................
6 Screw Plug 30N∙m (22 lb-ft) ................
7OilPan
8 Locking Pin
9 Injection Timing Device10 Washer
11 Bolt (Left -- Hand Thread) 46N∙m (34 lb-ft) ....
12 Camshaft Sprocket
13 Washer
14 12-- Sided Stretch Bolt
Check, 25N∙m (18 lb-ft) +90_ ..............
15 Timing Chain
16 Seal
17 Chain Tensioner 80N∙m (59 lb-ft) ............
Page 787 of 2053
1F3 -- 30 OM600 ENGINE CONTROLS
D AEW OO M Y_2000
Tools Required
601589000800 Flange
601 589 05 21 00 Locking Screw
116 589 20 33 00 Sliding Hammer
116 589 02 34 00 Threaded Bolt
667 589 04 63 00 Retaining Plate
Removal & Installation Procedure
1. Remove the bolts (2) and then remove the cylinder
head cover (1) and gasket (3).
Installation Notice
Tightening Torque10 N∙m(89lb-in)
Notice
Replace the gasket.
Rotate the engine 1 revolution by hand and check
TDC marking of the crankshaft and camshaft.
2. Loosen the camshaft sprocket bolt (14).
Notice
Do not remove the bolt.
Installation Notice
Tightening Torque25N∙m (18 lb-ft) + 90_
Notice
If max. length of bolt exceeds 53.6mm, replace it.
3. Loosen the bolt (11) (left -- hand thread).
Notice
Do not remove the bolt.
Page 788 of 2053
OM600 ENGINE CONTROLS 1F3 -- 31
D AEW OO M Y_2000
4. Position the no.1 cylinder at ATDC 15_.
Notice
Do not rotate the engine with camshaft sprocket bolt
or opposite direction of the engine rotation.
5. Remove the plug (6) and seal (5) from the fuel injec-
tion pump and collect oil in a suitable vessel.
Installation Notice
Tightening Torque30 N∙m (22 lb-ft)
Notice
Replace the seal.
6. Install the locking screw (18) into the injection pump.
Notice
Before tightening the bolts for the injection timing
device and the camshaft sprocket, always remove
the locking screw from the injection pump and rein-
stall the plug.
Locking Screw 601 589 05 21 00
7. Place alignment marks (arrow) on the timing chain
(12) and camshaft sprocket (15).
Page 789 of 2053
1F3 -- 32 OM600 ENGINE CONTROLS
D AEW OO M Y_2000
8. Remove the chain tensioner (17).
Installation Notice
Tightening Torque80 N∙m (59 lb-ft)
Notice
Replace the seal (16).
9. Pull out the 12-- sided stretch bolt (14) and washer
and remove thecamshaft sprocket (12).
10. Pull out the bolt (11) and washer (10).
Notice
Be careful that the bolt is left -- hand thread.
Installation Notice
Tightening Torque46 N∙m (34 lb-ft)
11. Using special tool (24, 25), remove the locking pin
(8).
Sliding Hammer 116 589 20 33 00
Threaded Bolt 116 589 02 34 00
Page 802 of 2053
OM600 ENGINE CONTROLS 1F3 -- 45
D AEW OO M Y_2000
FUEL INJECTION PUMP
Preceding Work : Removal of vacuum pump
Removal of air cleaner housing
Removal of intake manifold
18 Chain Tensioner 80N∙m (59 lb-ft) ............
19 Seal Replace.............................
20 Bolt(Left -- Hand Thread) 46N∙m (34 lb-ft) .....
21 Washer
22 Bolt 23N∙m (17 lb-ft) .....................
23 Seal Replace.............................24 Oil Pan
25 Fuel Injection Pump
26 Seal Replace.............................
27 Screw Plug 30N∙m (22 lb-ft) ...............
28 Square Nut
Tools Required
000 589 77 03 00 Box Wrench Insert
601 589 00 08 00 Flange
601 589 05 21 00 Locking Screw
601 589 05 14 00 Assembly CageRemoval
Page 805 of 2053
1F3 -- 48 OM600 ENGINE CONTROLS
D AEW OO M Y_2000
Installation Procedure
1. Remove the screw plug (27) and seal (26) and col-
lect oil in a vessel.
2. Insert flange (31) onto the injection pump camshaft
and turn until the cam of the governor is visible in the
hole.
Flange 601 589 00 08 00
3. Tighten the locking screw.
Locking Screw 601 589 05 21 00
4. Ensure that the No.1 cylinder is positioned at ATDC
15_.