Differences

This shows you the differences between two versions of the page.

--- engines:m104.98x [2020/10/13 06:15] – [Upper timing cover] john5788
+++ engines:m104.98x [2021/12/23 01:23] (current) – [Complete Engine Removal] john5788
@@ Line 7: / Line 7: @@
 M104 engines use a cartridge filter and can be ordered from the dealer using part number **104 180 01 09**, but aftermarket kits can be purchased from automotive retailers referencing the table below. Kits should come with a new seal ring for replacement on the filter cap.
+\\
+<grid>
+<col sm="3">
+<panel type="default" title="Filters" no-body="true">
 ^ Brand ^ Part number ^
 | WIX | 51145 |
@@ Line 14: / Line 19: @@
 | Bosch | 72194WS |
 | Mann | HU7271X |
+</panel>
+</col>
+</grid>
 ==== Fluid ====
@@ Line 20: / Line 29: @@
 ===== Compression Pressure Test =====
 <image shape="responsive">{{ engines:m104980compressiontestdata.png }}</image>
+\\
 <grid>
 <col sm="6">
@@ Line 32: / Line 44: @@
 <col sm="3">
 <thumbnail>
-{{ engines:compressiontesttool.jpg?120 }}
+{{ engines:compressiontesttool.jpg?300 }}
 <caption>Taking a measurement on the compression tester</caption>
 </thumbnail>
 </col>
 <col sm="1"></col>
@@ Line 47: / Line 58: @@
   - Drain coolant at radiator and engine block
   - Remove exhaust manifold
-  - Remove intake manifold
+  - [[engines:m104.98x#intake_manifold|Remove intake manifold]]
   - Remove upper timing cover
   - Remove guide pin rail with extractor
@@ Line 64: / Line 75: @@
 <col sm="3">
 <thumbnail>
-{{ engines:m104guiderailpinpuller.jpg?120 }}
+{{ engines:m104guiderailpinpuller.jpg?300 }}
 <caption>Use an M6x1.0 screw to extract the guide rail pin</caption>
 </thumbnail>
@@ Line 70: / Line 81: @@
 <col sm="3">
 <thumbnail>
-{{ engines:m104cylinderheadtighteningorder.png?120 }}
+{{ engines:m104cylinderheadtighteningorder.png?300 }}
 <caption>Cylinder head tightening order</caption>
 </thumbnail>
@@ Line 94: / Line 105: @@
 <col sm="3">
 <thumbnail>
-{{ engines:m104dirtyblocksurface.jpg?120 }}
+{{ engines:m104dirtyblocksurface.jpg?300 }}
 <caption>Piston tops and mating surface before cleaning </caption>
 </thumbnail>
@@ Line 100: / Line 111: @@
 <col sm="3">
 <thumbnail>
-{{ engines:m104pistonscleaned.jpg?120 }}
+{{ engines:m104pistonscleaned.jpg?300 }}
 <caption>Piston tops and mating surface cleaned </caption>
 </thumbnail>
@@ Line 128: / Line 139: @@
   - Install chain tensioner
   - Check timing by rotating the engine through one entire combustion cycle. Check alignment of camshafts and crankshaft.
-  - Install intake manifold
+  - [[engines:m104.98x#intake_manifold|Install intake manifold]]
   - Install exhaust manifold
 </col>
@@ Line 135: / Line 146: @@
 <col sm="6">
 <thumbnail>
-{{ engines:m104headgasketinstalled.jpg?120 }}
+{{ engines:m104headgasketinstalled.jpg?300 }}
 <caption>Head gasket installed</caption>
 </thumbnail>
@@ Line 141: / Line 152: @@
 <col sm="6">
 <thumbnail>
-{{ engines:m104cylinderheadhoist.jpg?120 }}
+{{ engines:m104cylinderheadhoist.jpg?300 }}
 <caption>The M104 cylinder head is very heavy. A hoist is used to lower the head onto the block safely.</caption>
 </thumbnail>
@@ Line 147: / Line 158: @@
 <col sm="6">
 <thumbnail>
-{{ engines:m104cylinderheadtighteningorder.png?120 }}
+{{ engines:m104cylinderheadtighteningorder.png?300 }}
 <caption>Cylinder head tightening order</caption>
 </thumbnail>
@@ Line 153: / Line 164: @@
 <col sm="6">
 <thumbnail>
-{{ engines:m104cylinderheadboltmark.jpg?120 }}
+{{ engines:m104cylinderheadboltmark.jpg?300 }}
 <caption>Mark on cylinder head bolt to estimate torquing stages </caption>
 </thumbnail>
@@ Line 159: / Line 170: @@
 <col sm="6">
 <thumbnail>
-{{ engines:m104980_setintakecamshafttdc.jpg?120 }}
+{{ engines:m104980_setintakecamshafttdc.jpg?300 }}
 <caption>Intake camshaft set to TDC </caption>
 </thumbnail>
@@ Line 185: / Line 196: @@
     - Remove poly v-belt
     - Remove air compressor with hoses still attached
-    - Remove condensor
+    - Remove condenser
   - Disconnect fuel pipes at fuel distributor
   - Disconnect accelerator cable and transmission bowden cable
@@ Line 227: / Line 238: @@
   - Install in reverse procedure
 ===== Fan clutch =====
-The M104.98x engines share the same fan clutch as the older M103 predecessor. The part number for the viscous fan clutch is 103 200 04 22
+The M104.98x engines share the same fan clutch as the older M103 predecessor. The part number for the viscous fan clutch is [[parts:1032000422|103 200 04 22 ]]
 ==== Special Tool ====
@@ Line 244: / Line 255: @@
 <col sm="3">
 <thumbnail>
-{{ engines:fanclutchcounterhold.png?120 }}
+{{ engines:fanclutchcounterhold.png?300 }}
 <caption>Counter hold on the fan clutch</caption>
 </thumbnail>
@@ Line 250: / Line 261: @@
 <col sm="3">
 <thumbnail>
-{{ engines:m104removefanclutch.jpg?120 }}
+{{ engines:m104removefanclutch.jpg?300 }}
 <caption>Removing fan clutch</caption>
 </thumbnail>
@@ Line 288: / Line 299: @@
 ==== Removal ====
-  - Remove fan shroud
+  - [[engines:m104.98x#fan_shroud|Remove fan shroud]]
-  - Remove viscous fan clutch
+  - [[engines:m104.98x#fan_clutch|Remove viscous fan clutch]]
   - Loosen bolts on pulleys for water pump, power steering pump, and fan clutch
-  - Remove poly v-belt
+  - [[engines:m104.98x#poly_v-belt|Remove poly v-belt]]
   - Remove pulleys on water pump, power steering pump, and fan clutch
   - Remove top bolt (6) of belt tensioner damper to front cover, 13mm hex
@@ Line 320: / Line 331: @@
   - Drain coolant from radiator and engine block
   - Remove radiator
-  - Remove belt tensioner
+  - [[engines:m104.98x#belt_tensioner|Remove belt tensioner]]
   - Remove 13mm hex bolt holding power steering pump to rear belt tensioner bracket and set power steering pump aside with hoses connected
     - When this bolt is loosened, the sleeve for the upper belt tensioner bracket bolt will fall off.
@@ Line 381: / Line 392: @@
   - Reinstall idle air control valve and dip stick if removed.
   - Reinstall the bracket that connects the power steering pump and belt tensioner
-  - Install belt tensioner
+  - Install belt tensioner[[engines:m104.98x#belt_tensioner|Install belt tensioner]]
   - Install radiator
   - Fill coolant, bleed, and check for leaks
@@ Line 501: / Line 512: @@
 The metal to metal surfaces of the upper timing cover need a sealant applied before installation. Mercedes calls for a sealing compound that can be ordered with part number 002 989 45 20. Alternatives include Loctite 5900 and Permatex The Right Stuff.
+<grid>
+<col sm="4">
+<thumbnail>
+{{ servicetools:loctite5900.jpg?600 }}
+<caption>Loctite 5900</caption>
+</thumbnail>
+</col>
+<col sm="4">
+<thumbnail>
+{{ servicetools:permatextherightstuff.jpg?600 }}
+<caption>Permatex The Right Stuff</caption>
+</thumbnail>
+</col>
+<col sm="4">
+<thumbnail>
+{{ servicetools:mercedessealant.jpg?600 }}
+<caption>Mercedes Sealant</caption>
+</thumbnail>
+</col>
+</grid>
+  - Clean mating surfaces of cylinder head, upper, and lower timing covers
+  - Apply sealant in the corners of the mating surfaces
+  - Install new rubber u-shaped seal and press the ends of the seal into the sealant
+  - On the exhaust side, apply another small layer of sealant across the top of the rubber seal. This corner tends to leak at any opportunity it has.
+  - Apply sealant to the mating surface of the timing cover. Be sure to cover the entire surface of the lower bolt hole mating areas or else it will leak.
+  - Apply a light coat of motor oil to the top of the rubber u-shaped seal allowing the timing cover to slide on without folding the seal over
+  - Assemble timing cover to cylinder head. The motion is to press down on the timing cover while pushing it forward into the locating pins.
+  - Secure the bottom two 13mm hex bolts first while continuing to press down on the timing cover
+  - Fasten the other timing cover bolts evenly and torque them to 25Nm
+<grid>
+<col sm="3">
+<thumbnail>
+{{ engines:m104980uppertimingcoversurfacecleaned.jpg?400 }}
+<caption>Mating surfaces on cylinder head and lower timing cover cleaned up </caption>
+</thumbnail>
+</col>
+<col sm="3">
+<thumbnail>
+{{ engines:m104980closeuptimingcovercorner.jpg?400 }}
+<caption>Close up of the problem corner where the 3 surfaces meet </caption>
+</thumbnail>
+</col>
+<col sm="3">
+<thumbnail>
+{{ engines:m104980dabsealanttimingcover.jpg?400 }}
+<caption>Dab of sealant in the corner</caption>
+</thumbnail>
+</col>
+<col sm="3">
+<thumbnail>
+{{ engines:m104980timingcoversealugasketinstalledleft.jpg?400 }}
+<caption>Left side view of the installed U-shaped gasket </caption>
+</thumbnail>
+</col>
+<col sm="3">
+<thumbnail>
+{{ engines:m104980timingcoverintakeside.jpg?400 }}
+<caption>Right side view of the installed U-shaped gasket </caption>
+</thumbnail>
+</col>
+<col sm="3">
+<thumbnail>
+{{ engines:m104980_uppertimingcoversealantapplied.jpg?400 }}
+<caption>Sealant applied to cover </caption>
+</thumbnail>
+</col>
+<col sm="3">
+<thumbnail>
+{{ engines:m104980timingcovergasketinstalled.jpg?400 }}
+<caption>The u-gasket after the upper timing cover has been installed </caption>
+</thumbnail>
+</col>
+</grid>
+In addition to mounting the timing cover, the radial camshaft seal will need to be replaced. A special tool is required to install this seal properly
+  - Insert tool into the end of the camshaft
+  - Apply oil to the inside perimeter of the sealing hole and to the seal itself
+  - Slide the seal onto the tool and press in
+  - Remove the tool once the seal is no longer in contact with it
+  - Tap the seal in with a socket until seal is flush with surface
+    - If seal still leaks when flush with surface, then reinstall a new seal in a different position. A groove must have been worn at the previous location causing a leak.
+<grid>
+<col sm="4">
+<thumbnail>
+{{ servicetools:m104camshaftradialsealtool.jpg?600 }}
+<caption>Camshaft seal tool </caption>
+</thumbnail>
+</col>
+<col sm="4">
+<thumbnail>
+{{ engines:m104camshaftsealtoolinstalled.jpg?600 }}
+<caption>Camshaft seal tool installed</caption>
+</thumbnail>
+</col>
+<col sm="4">
+<thumbnail>
+{{ engines:m104timingcoverradialsealinstalled.jpg?600 }}
+<caption>Camshaft radial seal installed</caption>
+</thumbnail>
+</col>
+</grid>