{"type":"doc","content":[{"type":"paragraph","content":[{"text":"Abstract","type":"text","marks":[{"type":"strong"}]},{"text":": How to replace polyribbed belt on Mercedes-Benz E-class (W124) with M103 and M104 engines","type":"text"}]},{"type":"rule"},{"type":"paragraph","content":[{"text":"Applies to: Mercedes-Benz E-Class (W124) 1986 - 1995 with M103 and M104 gasoline engines","type":"text","marks":[{"type":"em"}]}]},{"type":"rule"},{"type":"bodiedExtension","attrs":{"extensionType":"com.atlassian.confluence.macro.core","extensionKey":"section","parameters":{"macroParams":{},"macroMetadata":{"schemaVersion":{"value":"1"},"title":"Section"}}},"content":[{"type":"extension","attrs":{"extensionType":"com.atlassian.confluence.migration","extensionKey":"legacy-content","text":"","parameters":{"cxhtml":"65%

This article is supplemental information to the Bentley Mercedes-Benz E-Class Owner's Bible , Chapter 3 Maintenance pages 97 - 101 regarding conflicting belt routing diagrams.Changes are marked in red.

Chapter 3 - Maintenance

Polyribbed belt replacing, pages 97-102

M103 engine

Loosen fan shroud from its mounting points and place it back up on fan.
Lock main fan pulley by inserting special tool 103 589 00 40 00 into hole in hub (arrow).

Using special tools 103 589 01 09 00 and 001 589 72 21 00, remove hex socket screw in center of fan hub and remove viscous fan / clutch assembly along with shroud.

Loosen clamping bolt (arrow) at least ½ turn.

Engine without air conditioning shown.

- Using tension adjusting screw (arrow), release tension on belt tensioning device. This will free up belt.

Remove belt.
Check all pulleys for damage. Check belt tensioning device for play. Replace if required.
Using tension adjusting screw, move belt tensioner indicator (A) to left-most mark (as viewed from driver seat). B is clamping bolt.

Install new belt as shown in diagram.

Engine with air conditioning shown.

- Using tension adjusting screw, adjust tension pointer so it is at 7th mark on indexed tensioner (arrow) or left-most mark on non-indexed tensioner. Tighten clamping bolt.

Tightening torque
Belt tensioner clamping bolt.........75 Nm (55 ft-lb)

Check belt routing to make sure it is correct.
Reinstall viscous fan clutch and fan shroud.
Using counterholding tool 103 589 00 40 00, tighten viscous fan to fan hub.

Tightening torque
Viscous fan to fan hub.........45 Nm (33 ft-lb)

M104 engine

Fan shroud for M104 engine is two-piece unit. To remove rear portion for belt changing, remove pin (A) and rotate rear section (B) to left to remove.

Loosen clamping screw (A) ½ turn.

Loosen tension adjuster (arrow) until belt can be removed.

Check all pulleys for damage. Check belt tensioning device for play and replace if required.

Install new belt as shown in diagram.

Using tensioning adjustment screw, move pointer on belt tensioner to left-most position (A) as viewed from driver's seat. Turning tensioner clockwise, tighten until pointer aligns with right most-mark (B).

Check seating of belt in all pulleys.

Tighten clamping bolt.

Tightening torque
Belt tensioner clamping bolt..........75 Nm (55 ft-lb

Install fan shroud in reverse order of removal.

M119 engine

400E and 500E fan shroud is a two piece unit consisting of upper and lower shrouds. Remove upper shroud.

Loosen clamping bolt (A) and loosen tensioning screw (B) in a counterclockwise direction until tensioner is loose enough to remove belt.

Check all pulleys for damage. Check belt tensioning device for play and replace if required.

Install new belt as shown in diagram.

Using tensioning screw, adjust belt tensioner pointer so it is pointing to right-most mark (top in picture, side view of belt tensioner).

Turn tensioning screw clockwise until pointer is in center position.

Check seating of belt in all pulleys.

Tighten clamping bolt.

Tightening torque
Belt tensioner clamping bolt..........100 Nm (74 ft-lb)

Install fan shroud in reverse order of removal.

Mercedes-Benz E-Class (W124) Owner's Bible™: 1986-1995

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This will free up belt.","type":"text"}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":400,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":400,"id":"d328ef46-572d-4c45-a51c-7fec7a1d0b2b","collection":"contentId-437453751","type":"file","height":300}}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Remove belt.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Check all pulleys for damage. Check belt tensioning device for play. Replace if required.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Using tension adjusting screw, move belt tensioner indicator (","type":"text"},{"text":"A","type":"text","marks":[{"type":"strong"}]},{"text":") to left-most mark (as viewed from driver seat). ","type":"text"},{"text":"B","type":"text","marks":[{"type":"strong"}]},{"text":" is clamping bolt.","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":400,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":400,"id":"4724988e-5dc6-475a-bc14-3818831cdcd7","collection":"contentId-437453751","type":"file","height":288}}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Install new belt as shown in diagram.","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":400,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":400,"id":"281754f6-1dda-4a00-b2b3-e55d5b5e0bb1","collection":"contentId-437453751","type":"file","height":263}}]},{"type":"panel","attrs":{"panelType":"warning"},"content":[{"type":"paragraph","content":[{"text":"Engine with air conditioning shown.","type":"text","marks":[{"type":"textColor","attrs":{"color":"#ff0000"}}]}]}]},{"type":"paragraph","content":[{"text":"- Using tension adjusting screw, adjust tension pointer so it is at 7th mark on indexed tensioner (","type":"text"},{"text":"arrow","type":"text","marks":[{"type":"strong"}]},{"text":") or left-most mark on non-indexed tensioner. Tighten clamping bolt.","type":"text"}]},{"type":"rule"},{"type":"paragraph","content":[{"text":"Tightening torque","type":"text","marks":[{"type":"strong"}]},{"type":"hardBreak"},{"text":" Belt tensioner clamping bolt.........75 Nm (55 ft-lb)","type":"text"}]},{"type":"rule"},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Check belt routing to make sure it is correct.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Reinstall viscous fan clutch and fan shroud.","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Using counterholding tool 103 589 00 40 00, tighten viscous fan to fan hub.","type":"text"}]}]}]},{"type":"rule"},{"type":"paragraph","content":[{"text":"Tightening torque","type":"text","marks":[{"type":"strong"}]},{"type":"hardBreak"},{"text":" Viscous fan to fan hub.........45 Nm (33 ft-lb)","type":"text"}]},{"type":"rule"},{"type":"heading","attrs":{"level":4},"content":[{"text":"M104 engine","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Fan shroud for M104 engine is two-piece unit. 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Check belt tensioning device for play and replace if required.","type":"text"}]}]}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Install new belt as shown in diagram.","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":400,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":400,"id":"c2b9003c-de18-48d3-85ec-806d01da0892","collection":"contentId-437453751","type":"file","height":253}}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Using tensioning adjustment screw, move pointer on belt tensioner to left-most position (","type":"text"},{"text":"A","type":"text","marks":[{"type":"strong"}]},{"text":") as viewed from driver's seat. Turning tensioner clockwise, tighten until pointer aligns with right most-mark (","type":"text"},{"text":"B","type":"text","marks":[{"type":"strong"}]},{"text":").","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":400,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":400,"id":"e3c2c06f-a0d9-4c96-92d1-d29006956447","collection":"contentId-437453751","type":"file","height":287}}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Check seating of belt in all pulleys.","type":"text"}]}]}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Tighten clamping bolt.","type":"text"}]}]}]},{"type":"rule"},{"type":"paragraph","content":[{"text":"Tightening torque","type":"text","marks":[{"type":"strong"}]},{"type":"hardBreak"},{"text":" Belt tensioner clamping bolt..........75 Nm (55 ft-lb","type":"text"}]},{"type":"rule"},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Install fan shroud in reverse order of removal.","type":"text"}]}]}]},{"type":"heading","attrs":{"level":4},"content":[{"text":"M119 engine","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"400E and 500E fan shroud is a two piece unit consisting of upper and lower shrouds. Remove upper shroud.","type":"text"}]}]}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Loosen clamping bolt (","type":"text"},{"text":"A","type":"text","marks":[{"type":"strong"}]},{"text":") and loosen tensioning screw (","type":"text"},{"text":"B","type":"text","marks":[{"type":"strong"}]},{"text":") in a counterclockwise direction until tensioner is loose enough to remove belt.","type":"text"}]}]}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Check all pulleys for damage. Check belt tensioning device for play and replace if required.","type":"text"}]}]}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Install new belt as shown in diagram.","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":400,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":400,"id":"72cfc90d-52c7-446f-82c6-36b4aa4f8d4e","collection":"contentId-437453751","type":"file","height":240}}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Using tensioning screw, adjust belt tensioner pointer so it is pointing to right-most mark (top in picture, side view of belt tensioner).","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":400,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":400,"id":"0a0d1d78-f5ed-4107-ac81-d12ff9cf052e","collection":"contentId-437453751","type":"file","height":303}}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Turn tensioning screw clockwise until pointer is in center position.","type":"text"}]}]}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":400,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":400,"id":"f8a7301f-17e0-45e3-a7dd-dd8bddd6d5f1","collection":"contentId-437453751","type":"file","height":303}}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Check seating of belt in all pulleys.","type":"text"}]}]}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Tighten clamping bolt.","type":"text"}]}]}]},{"type":"rule"},{"type":"paragraph","content":[{"text":"Tightening torque","type":"text","marks":[{"type":"strong"}]},{"type":"hardBreak"},{"text":" Belt tensioner clamping bolt..........100 Nm (74 ft-lb)","type":"text"}]},{"type":"rule"},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Install fan shroud in reverse order of removal.","type":"text"}]}]}]},{"type":"heading","attrs":{"level":6},"content":[{"text":"Mercedes-Benz E-Class (W124) Owner's Bible™: 1986-1995 ","type":"text","marks":[{"type":"link","attrs":{"href":"http://www.bentleypublishers.com/mercedes-benz/repair-information/mercedes-benz-e-class-owners-bible-1986-1995.html"}}]}]},{"type":"paragraph","content":[{"text":" ","type":"text"}]},{"type":"mediaSingle","attrs":{"layout":"align-start","width":200,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":200,"id":"18b9d6ec-edf7-4dea-b522-721970352ee1","collection":"contentId-437453751","type":"file","height":263},"marks":[{"type":"link","attrs":{"href":"http://www.bentleypublishers.com//mercedes-benz/repair-information/mercedes-benz-e-class-owners-bible-1986-1995.html"}}]}]}]}],"version":1},"reason":"A column macro in a rich body macro can't be created or edited in the new editor."}}},{"type":"extension","attrs":{"extensionType":"com.atlassian.confluence.migration","extensionKey":"legacy-content","text":"","parameters":{"cxhtml":"35%

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