1997 MERCEDES-BENZ ML500 timing belt

22Disconnect engine
wiring harness AR01.00-P-
2410V
23Remove poly V-belt
(3) Installation: Lock tensioning device with a
drift or pin (diameter 5 mm).
Model 163.154/157/172.AR13.22-P-
1202B
Model 163.174/175.AR13.22-P-
1202BA
24Disconnect
connector from A/C
compressor (10)
25Unbolt AC
compressor (10)
from timing case
cover Attach AC compressor at side in bottom of
engine compartment with lines connected.

*BA83.55-P-
1001-01A
26.1Remove left inner
fender (24) Only engine 113.942 /965 /981.AR88.10-P-
1300GH
27.1Remove shield (25) Only engine 113.942 /965 /981.
28Detach exhaust
system (11) at
exhaust manifold Installation: On vehicles with engine
damage check exhaust sy stem for chips before
assembly and remove any chips present to
prevent later damage

*BA14.10-P-
1002-01B
29Detach exhaust
bracket (12)Support exhaust system for this step.
Installation: Install new nuts.
30Unbolt torque
converter (20) from
starter ring gear(21) Installation: The mounting points (arrows,
black) of the torque converter (20) must be
flush with the three recesses (arrows, white) in
the starting ring gear (21).

*BA27.20-P-
1002-01C
31Disconnect left O2
sensor connector
before TWC
(G3/3x1) and right
O2 sensor connector
before TWC
(G3/4x1) from
transmission Remove cable ties!
32Unscrew starter Do not disconnect electric cables.
*BA15.30-P-
1003-01A
33Unscrew bolts at
transmission bell Engine 112.942/ 970.
Do not unscrew two top bolts at transmission
bell.
Engine 113.942 /965/ 981. Do not unscrew

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:56 PMPage 56 © 2006 Mitchell Repair Information Company, LLC.

*BA07.52-P-
1001-01A
Pressure hoseFig. 52
12Remove right and
left ignition coils
(12) AR15.12-P-
2003A
13Remove right and
left cylinder head
covers (13) AR01.20-P-
5014B
14Remove intake
manifold (14) Installation: On vehicles with engine
damage, the intake manifold must be examined
for swarfs before assembling and any swarfs
present must be removed, in order to avoid
consequential damage.
The intake manifold system must not be
disassembled.
Remove intake manifold together with fuel
distributor.AR09.20-P-
1310A
15.1Remove camshaft
angle position sensor
(15) Only necessary if right cylinder head is
removed.AR15.10-P-
2000A
16Remove poly-V-belt
(8) Installation: Lock tensioning device with a
drift or pin (diameter 5 mm).
Models 163.154/157/172.AR13.22-P-
1202B
Models 163.174/175.AR13.22-P-
1202BA
17Detach coolant line
(16) at left cylinder
head 6 mm socket hexagon*WH58.30-Z-
1001-06A
7 mm socket hexagon*WH58.30-Z-
1002-06A
18.1Remove inner fender
(9) Only for engine 113.942 /965 /981.AR88.10-P-
1300GH
19.1Remove shield (10) Only for engine 113.942 /965 /981.
20.1Remove exhaust
bracket (11) Only for engine 113.942 /965 /981.
Support exhaust system.
21Detach exhaust
system at exhaust
manifold Installation: On vehicles with engine
damage check exhaust sy stem for chips before
assembly and remove any chips present to
prevent later damage
*BA14.10-P-
1002-01B
22Position crankshaft
to 40° after ignition The engine must not be turned back;
otherwise the timing chain can get jammed. AR05.10-P-
6858V

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:57 PMPage 87 © 2006 Mitchell Repair Information Company, LLC.

TDC on first cylinder Rotate engine at cra nkshaft in direction of
rotation until 40° marking on belt pulley/
vibration damper is al igned with marking on
timing case cover.
The grooves on the camshafts must be pointing
toward the inner V.
23Lock camshafts with
locating plate Locating plateFig. 85
Locating plateFig. 86
24Remove chain
tensioner (17)Model 163.154 /157 with Engine 112.942 /970,
model 163.172 with Engine 113.942.AR05.10-P-
7800C
Model 163.174/175 with Engine 113.981 /965.AR05.10-P-
7800CA
25.1Remove oil filter
housing (18) with
oil/water heat
exchangerEngine 113.942.AR18.20-P-
3471B
Engines 113.965/981.AR18.20-P-
3471BA
26Remove camshaft
sprockets (19) If the camshaft sprockets are removed, the
engine must no longer be cranked otherwise the
timing chain might jam.
Engines 113.942 /965/981: ?
Tie timing chain tight on both camshaft
sprockets with cable straps.
Engine 112.942 /970: ?
Right-hand camshaft sprocket:
Tie timing chain tight on camshaft sprocket
with cable strap.
Left-hand camshaft sprocket:
Mark camshaft sprocket to timing chain and
remove camshaft sprocket.
It is not possible for the timing chain to
jump across at the crankshaft and balancing
shaft.
After installation: ?

Inspect basic positi on of camshafts.
If necessary after checking: ?AR05.10-P-
6858V
Set the basic position of camshafts.AR05.20-P-
6020AU
Open-end wrenchFig. 87
Insertion toolFig. 88
Torque wrenchFig. 92
*BA05.20-P-
1001-01B
27Remove camshaft
bearing bridges (28) Observe slackening and tightening pattern!AR05.20-P-
7103AU

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:57 PMPage 88 © 2006 Mitchell Repair Information Company, LLC.

Engine 113.992 in model 230.474AR14.30-P-
7251RVK
28Separate electrical
line from coolant
temperature
sensor
29Unscrew bolts
(21) of cylinder
head to timing
case cover on
right and left *BA01.40-P-
1002-01C
30Remove screws
of the timing case
cover Installation: Apply sealant to marked bolts, observing
the bolt diagram for th e timing case cover: ?*BR00.45-Z-
1015-01A
Bolt diagram for timing case cover engine 112, 113AR01.40-P-
8000-01B
Bolt diagram for timing case cover engine 113.992,AR01.40-P-
8000-01RVK
*BA01.40-P-
1001-01C
*BA01.40-P-
1002-01C
31Take off timing
case cover Installation: The bolt threads for the coolant pump,
the belt tensioning device, and the power steering pump
are not cut into a new timing case cover. For this reason,
use new self-tapping bolts in combination with a new
timing case cover for attaching the coolant pump, the belt
tensioning device and th e power steering pump. Pay
attention to tightening torque with non-pre-tapped threads.
*BA13.25-P-
1001-01D
*BA13.25-P-
1001-01M
*BA13.25-P-
1005-01D
*BA13.25-P-
1006-01D
*BA13.25-P-
1007-01D
*BA20.10-P-
1001-01C
*BA20.10-P-
1001-01M
*BA20.10-P-
1002-01C
*BA20.10-P-

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:57 PMPage 104 © 2006 Mitchell Repair Information Company, LLC.

Crankcase, timing case cover, end cover
Belt tensioning device
Belt tensioning device
1002-01Chead to timing
case cover
NumberDesignation
Engines
113.940/941/
942/943/944/
945/946/948/
960/961/962/
963/964/965/
966/967/968/
969/971/980/
981/982/984/
986/992/995
Engine 113.987/
988/990/ 991/993
BA01.40-P-1001-
01CTiming case cover
to crankcaseNm2020
BA01.40-P-1002-
01CBolt, cylinder head
to timing case coverNm2020
NumberDesignation
Engine
112.910/911/91
2/913/914/915/
916/917/920/
921/922/923/
940/941/942/
943/944/945/
946/947/949/
953/954/955/
960/961/970/
972/973/975
BA13.25-P-1001-
01MSelf-tapping bolt of
belt tensioner to
timing case coverThread not pre-
tappedNm35
Thread pre-tappedNm25
Engine
113.940/941/
942/943/944/
945/946/948/
960/961/962/
963/964/965/
966/967/968/
969/971/980/
981/982/984/
Engine 113.990/
991/992/

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:57 PMPage 107 © 2006 Mitchell Repair Information Company, LLC.

Coolant pump, coolant thermostat
NumberDesignation986/987/988993/995
BA13.25-P-
1001-01DSelf-tapping bolt
of belt tensioner
to timing case
coverThread not pre-
tappedNm3535
Thread pre-
tappedNm2525
BA13.25-P-
1005-01DBolt of belt
tensioner to
timing case
coverM7 x 25Nm3535
BA13.25-P-
1006-01DSelf-tapping bolt
of compressor
belt tensioner to
timing case
coverThread not pre-
tappedNm-35
Thread pre-
tappedNm-25
BA13.25-P-
1007-01DBracket for charge air cooler water
pipesNm714
BA13.25-P-
1008-01DBolt of guide
pulley for
compressor and
major assembly
belts to timing
case coverM8x78Nm-68
NumberDesignation
Engine
113.940/941/
942/943/944/
945/946/948/
960/961/962/
963/965/966/
967/968/969/
980/981/982/
984/986/992
993/995
BA20.10-P-
1001-01CSelf-tapping
screw for
coolant pump to
timing caseThread not pre-
tappedM6Nm14
Thread not pre-
tappedM8Nm35
Thread pre-
tappedM6Nm10
Thread pre-
tappedM8Nm25
BA20.10-P-
1002-01CBelt pulley to coolant pumpNm10
BA20.10-P- Bolt, coolant thermostat housing M6 Nm
10

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:57 PMPage 108 © 2006 Mitchell Repair Information Company, LLC.

Coolant pump, coolant thermostat
Power steering pump
Power steering pump
1003-01C
BA20.10-P-
1004-01CCoolant pump at the timing caseM7Nm10
NumberDesignation
Engine
112.910/911/91
2/913/914/915/
916/917/920/
921/922/923/
940/941/942/
943/944/945/
946/947/949/
953/954/955/
960/961/970/
972/973/975
BA20.10-P-
1001-01MSelf-tapping
screw for
coolant pump to
timing caseThread not pre-
tappedM6Nm14
Thread not pre-
tappedM8Nm35
Thread pre-
tappedM6Nm10
Thread pre-
tappedM8Nm25
BA20.10-P-
1002-01MBelt pulley to coolant pumpNm9
BA20.10-P-
1003-01MBolt, coolant thermostat housingM6Nm14
BA20.10-P-
1004-01MCoolant pump at the timing caseM7Nm14
NumberDesignationModel 170
BA46.30-P-1005-01AScrew, power steering
pump to cylinder liner
collar seat or crankcaseNm25
Model
208.365/370/
Models
210.061/063/
065/070/074/08
1/082/083/261/
263/265/270/27
4/281/282/283/

2001 Mercedes-Benz ML320
1998-2005 ENGINE Complete engine - 163 Chassis
me
Saturday, October 02, 2010 3:17:57 PMPage 109 © 2006 Mitchell Repair Information Company, LLC.