Page 2433 of 4133

Fig. 70: Identifying Heli-Coil Repair Set (102 589 00 99 00) 
CHECKING CYLINDER HEAD  BOLTS - AR01.30-P-5800-03B 
Cylinder head/Cylinder head bolts  
Cylinder head/cyl  inder head bolts  
1. Measure length (L) of cylinder head bolts.   
 If the length (L) exceeds the maximu  m permissible dimension then the cyli nder head bolts must be replaced.
NumberDesignation
Engines  
112.910/911/  
912/913/914/  
915/916/917/  
920/921/922/  
923/940/941/  
942/943/944/  
945/946/947/ 
949/951/953/  
954/955/960/  
961/970/972/  
973/975/976Engines  
113.940/941/  
942/943/944/  
945/946/948/  
960/961/962/  
963/964/965/  
966/967/968/  
969/971/980/ 
981/982/984/  
986/987/988/  
990/991/992/  
993/995
BE01.30-P- 
1001-04BCylinder head 
boltThread diameterM1111
Length (L) when 
newmm141.5141.5
Length (L)mm< or = 144.5< or = 144.5
See pictureAR01.30-P-
5800-03B
AR01.30-P-
5800-03B
NumberDesignationEngine 113.989
BE01.30-P-1001- 
04BCylinder head boltThread diameterM11
Length (L) when  
newmm141.5
Length (L)mm< or = 144.5
See pictureAR01.30-P-5800-
03B
 
2001 Mercedes-Benz ML320 
1998-2005 ENGINE Complete engine - 163 Chassis  
me  
Saturday, October 02, 2010 3:17:56 PMPage 77 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 2434 of 4133
Fig. 71: Identifying Length  Of Cylinder Head Bolts 
TIGHTENING INSTRUCTIO NS FOR CYLINDER HEAD BOLTS - AR01.30-P-5800-07B 
 Cylinder head  
 Cylinder head   
NumberDesignation
Engines  
112.910/911/  
912/913/914/  
915/916/917/  
920/921/922/  
923/940/941/  
942/943/944/  
945/946/947/  
949/951/953/  
954/955/960/  
961/970/972/  
973/975/976
Engines  
113.940/941/  
942/943/944/  
948/960/961/  
962/963/965/  
966/967/968/  
969/971/980/  
981/982/984/  
986
Engine  
113.987/  
988
Engine 
113.987/  
991/992/  
993/995
BA01.30-P- 
1001-01DBolt, 
cylinder  
head to 
crankcaseStage 1Nm10101010
Stage 2Nm30303030
Stage 3Angle °90909090
Stage 4Angle °90909090
NumberDesignationEngine 113.989Engine 113.964
BA01.30-P- 
1001-01DBolt, cylinder 
head to  
crankcaseStage 1Nm1010
Stage 2Nm3030
Stage 3Angle °9090
Stage 4Angle °9090
 
2001 Mercedes-Benz ML320 
1998-2005 ENGINE Complete engine - 163 Chassis  
me  
Saturday, October 02, 2010 3:17:56 PMPage 78 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 2435 of 4133
Fig. 72: Identifying Screwdr iver Insert (000 589 03 10 00)  
Fig. 73: Identifying Screwdr  iver Insert (000 589 04 10 00)
  
Tightening pattern/bolt assignment 
Left and right cylinder head M 112     
1-8 Collar bolt M11   a. a Combination bolts M850(  to timing case cover)   
b. b Combination bolts M830(to timing case cover)  
 
2001 Mercedes-Benz ML320 
1998-2005 ENGINE Complete engine - 163 Chassis  
me  
Saturday, October 02, 2010 3:17:56 PMPage 79 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 2436 of 4133

Fig. 74: Identifying Tightening Pattern/Bolt Assignment (Left And Right Cylinder Head M 112)
Tightening instructions for left and right cylinder heads M 112    
Use   wrench bit to tight  en cylinder head bolts.  
 Observe sequence, see tightening pattern.  
 If the tightening torque is exceeded on a cylinder he  ad bolt, unscrew the cylinder head bolt, inspect shank  
length of the cylinder head bolt in   question (replace bolt if necessary) and tighten again fully, beginning with  
stage 1.  
  Cylinder head bolts must  not be retightened.   
Tightening diagram/bolt assignment     
Left and right cylinder head M 113     
Fig. 75: Identifying Left And Right Cylinder   Head M 112 (Left And Right Cylinder Head M 113)
  
Tightening instructions for left and right cylinder heads M 113     
Use   wrench bit to tight  en cylinder head bolts.  
 Observe sequence, see tightening pattern.  
 If the tightening torque is exceeded on a cylinder he  ad bolt, unscrew the cylinder head bolt, inspect shank  
length of the cylinder head bolt in   question (replace bolt if necessary) and tighten again fully, beginning with  
stage 1. 
 
2001 Mercedes-Benz ML320 
1998-2005 ENGINE Complete engine - 163 Chassis  
me  
Saturday, October 02, 2010 3:17:56 PMPage 80 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 2437 of 4133
  Cylinder head bolts must  not be retightened.  
SLACKENING DIAGRAM FOR CYLINDER  HEAD BOLTS - AR01.30-P-5800-09B 
Fig. 76: Identifying Screwdriver Insert (000 589 03 10 00)  
Fig. 77: Identifying Screwdr  iver Insert (000 589 04 10 00)
  
Engine 112     
Fig. 78: Identifying Loosening Se  quence Of Cylinder Head Bolts 
- Engine 112  
1. Unscrew bolts (a, b).  
Engine 113    
 
2001 Mercedes-Benz ML320 
1998-2005 ENGINE Complete engine - 163 Chassis  
me  
Saturday, October 02, 2010 3:17:56 PMPage 81 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 2438 of 4133
Fig. 79: Identifying Loosening Se quence Of Cylinder Head Bolts - Engine 113  
2. Loosen cylinder head bolts (1 to 8 or 10)   as per the numerical sequence and remove.  
REMOVE/INSTALL CYLINDER HEAD - AR01.30-P-5800MV 
ENGINE 112.942 in MODEL 163.154    
ENGINE 112.970 in MODEL 163.157     
ENGINE 113.942 in MODEL 163.172     
ENGINE 113.981 in MODEL 163.174     
ENGINE 113.965 in MODEL 163.175     
Shown on model 163.154 with engine 112
 
2001 Mercedes-Benz ML320 
1998-2005 ENGINE Complete engine - 163 Chassis  
me  
Saturday, October 02, 2010 3:17:57 PMPage 82 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 2439 of 4133
Fig. 80: Identifying Cylinder Head  Remove/Install Components - Shown On Model 163.154 With Engine 
112 (1 Of 3)  
Fig. 81: Identifying Cylinder Head   Remove/Install Components 
- Shown On Model 163.154 With Engine 
112 (2 Of 3) 
 
2001 Mercedes-Benz ML320 
1998-2005 ENGINE Complete engine - 163 Chassis  
me  
Saturday, October 02, 2010 3:17:57 PMPage 83 © 2006 Mitchell Repair Information Company, LLC.  
     
        
        Page 2440 of 4133

Fig. 82: Identifying Cylinder Head  Remove/Install Components - Shown On Model 163.154 With Engine 
112 (3 Of 3) 
  Remove/install  
 Notes on self-locking  
nuts and boltsAll modelsAH00.00-N-0001-
01A 
   External torx setFig. 49
 Torx bit setFig. 48
 Risk of explosion    
caused by  
oxyhydrogen gas.  
Risk of poisoning  
and caustic burns    
caused by  
swallowing battery  
acid.   Risk of injury   
caused by burns to  
skin and eyes from  
battery acid or when  
handling damaged  
lead-acid batteriesNo fire, sparks, open fl  ames or smoking. Wear  
acid-resistant gloves, clothing and safety  
glasses. Only pour batter  y acid into suitable and  
appropriately marked containers.AS54.10-Z-0001-
01A 
1Disconnect battery  
ground cable   Installation:  After connecting, read out  
fault memory, encode radio and normalize  
power windows.  
Vehicles with stationary heater: Set clock of AR54.10-P-
0003A 
 
2001 Mercedes-Benz ML320 
1998-2005 ENGINE Complete engine - 163 Chassis  
me  
Saturday, October 02, 2010 3:17:57 PMPage 84 © 2006 Mitchell Repair Information Company, LLC.