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Home >> Mercedes Benz >> 2008 >> GL320 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Accessory Belt Drives - 164 Chassis) >> Testing & Repair >> Remove/install poly-V-belt tensioning device - AR13.25-P-3200 >> Remove/install poly-V-belt tensioning device - AR13.25-P-3200GZ (ML500)

Remove/install poly-V-belt tensioning device - AR13.25-P-3200GZ (ML500)

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ENGINE 113.964 in MODEL 164.175 

Fig 1: Identifying Poly-V-Belt Tensioning Device Components
G05259870Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Remove/install    
DANGER Risk of injury  caused by fingers being jammed or pinched  when removing/installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. When moving components, ensure that no body parts or limbs are within operating range of moving parts. AS00.00-Z-0011-01A
1 Open engine hood and raise to vertical position   AR88.40-P-1000GZ
2 Remove the left and right intake air duct    
3 Remove front engine cover   AR01.10-P-2405GZ
4 Partially remove poly-V-belt (2) IMPORTANT Only remove poly-V-belt (2) from belt pulley/guide pulleys until tensioning device (3) is accessible. AR13.22-P-1202GZ 
5 Rotate tensioning device at hexagon (3) in an anti-clockwise direction and lock IMPORTANT Lock tensioning device with a pin/drift (5 mm diameter).  
6 Remove bolts (1) TORQUE SPECIFICATION *BA13.25-P-1001-01D 
7 Remove tensioning device (3)    
8 Install in the reverse order    
DANGER Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the running engine Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not grasp hot or rotating parts.
AS00.00-Z-0005-01A
9 Carry out engine test run    
BELT TENSIONING DEVICE

Number Designation Engine 113.940/941/942/943/944/945/946/948/960/961/962/963/964/965/966/967/968/969/971/980/981/982/984/986/987/988
BA13.25-P-1001-01D Self-tapping bolt, belt tensioner to timing case cover Thread not pre-tapped Nm 35
Thread pre-tapped Nm 25