Checking and replacing the timing chain of engines 4B12 and 4B11 Mitsubishi Outlander XL 2007 - 2012

Tools:

• Ratchet wrench
• Extension (with cardan)
• Head 10 mm
• Head 12 mm
• Head 14 mm
• Head 17 mm
• Open end wrench 10 mm
• Straight ring wrench 16 mm
• Straight ring wrench 17 mm
• Straight ring wrench 19 mm
• Screwdriver flat medium
• torque wrench
• balloon wrench
• Collar for end nozzle
• Nozzle on the collar 22 mm
• screw jack
• Crankshaft pulley fixing tool (fork holder MB990767 and special bolts and MD998719)
• Adjustable support (or lifting device)
• Hammer medium
• Hex wrench for fixing the tensioner ratchet (or pin)
• Hex wrench for fixing the tensioner (or pin)
• Drift MB991448 (if needed)
• Oil pan puller MD998727
• Marker
• Knife (or scraper)
• Wheel chock (shoe)
• Funnel
• Flute brush
• Pliers

Parts and consumables:

• Timing chain MN183891
• Timing chain guides MN183892 and MN183893
• Tensioner MN183894

• Engine pan drain plug gasket MD050317

• Cylinder Head Cover Gasket 1035A583

• Front crankshaft oil seal 0127.52 (if necessary)
• Technical capacity
• Rope or wire
• Degreaser
• Cleaner (or solvent)
• Sealant Loctite 5900 or 5970, Three Bond 1217G (1000A923)
• Motor oil
• rags

Notes:

The replacement of the Mitsubishi Outlander HL timing chain with a 4B12 or 4B11 engine is carried out with a mileage of 200-300 thousand km. By this time, the chain wears out, and the tensioner cannot provide the recommended chain tension due to wear on the surfaces of the damper and the timing chain tensioner shoe.
A new timing chain may not have painted links. If so, put your own marks on sprockets and chain links before removing.

1.  Remove the decorative engine cover as described  here .

2.  Remove the crankcase and mudguards (lower, front and rear) of the engine as described in  this article .

3.  Then remove the right wheel, as well as the right side mudguard of the engine compartment . 

4.  Drain the engine  oil from the engine.

5.  Remove the engine cylinder head cover as described  here .

6.  Loosen the A/C compressor and magnetic clutch assembly mounting bolts and remove the compressor and clutch from the bracket along with the connected hoses. Below is the sequence for loosening the A/C compressor/clutch assembly mounting bolts.

Note:

After removal, use a wire or rope to hang the air conditioning compressor assembly with hoses on the body in a place where they will not interfere with further work.

7.  Remove  the oil pan by unscrewing its fastening bolts around the perimeter.

8.  Remove the accessory drive belt as described  here .

Note:

If the accessory drive belt is to be reused, mark an arrow on the back (non-working) side of the belt with a marker to indicate the direction of rotation in a clockwise direction.

9.  Fix the crankshaft pulley from rotation using a special tool (fork holder and special bolts, k.n. MB990767 and MD998719, respectively).

10.  Use a 22 mm socket to unscrew the central crankshaft pulley bolt, remove the washer and crankshaft pulley.

11.  Then remove the coolant pump pulley by unscrewing the three bolts securing it with a 10 mm head.

12.  Using a 16 mm spanner, unscrew the bolts securing the auxiliary drive belt guide rollers and remove them.

13.  Remove the accessory belt tensioner mechanism by removing the two 10mm head bolts as described  here .

14.  Remove the power steering pump assembly from the bracket along with the connected hoses.

Note:

After removal, hang the power steering pump assembly with hoses on the body with a wire or rope in a place where they will not interfere with the removal and installation of the timing chain.

15.  Remove the right engine mount as described  here .

16.  Turn away four bolts of fastening of a basic arm of the right support to a cover of a drive of GRM and remove it.

17.  Turn away bolts of fastening of a cover of a chain drive GRM.

18.  Insert a flathead screwdriver into the groove between the tab on the timing chain cover and the cylinder head.

19.  Slightly rocking the screwdriver back and forth, carefully separate the timing chain cover from the cylinder head and cylinder block, then remove the cover.

Note:

If the adhesive force (gluing strength) of the sealant applied to the timing chain cover is so high that damage (breaking off) of the protrusion on the cover is possible when it is disconnected, then insert the hammer handle inside the timing chain cover and, while slightly shaking the handle, disconnect the cover from the head cylinder block and cylinder block.

20.  Remove the timing chain guide by unscrewing the mounting bolts.

21.  Temporarily install the crankshaft pulley.

22.  Turn the crankshaft clockwise until the alignment mark on the camshaft sprocket aligns with the upper plane of the cylinder head, as well as the alignment mark (key) of the crankshaft sprocket with the plane of the cylinder block under the main bearing cap, as shown in the photo below.

Note:

Do not turn the crankshaft counterclockwise. 
This does not require the timing chain link (orange or blue) to always align with each sprocket timing mark.

23.  Remove the temporarily installed crankshaft pulley.

24.  Using a flat screwdriver, release the tensioner ratchet.

25.  Sink the timing chain tensioner rod and install a hard wire or hex wrench (in the form of "L", 1.5 mm) to fix the rod (pictured above).

26.  Remove the tensioner from the engine by unscrewing the two bolts of its fastening.

27.  Before removing the timing chain, unscrew the bolts securing the tensioner shoe and the timing chain damper and remove them.

28.  Now you can remove the timing chain Outlander HL.

Timing chain installation

1.  Check the timing chain tensioner rod for wear and damage. Replace tensioner if necessary.

2.  Check that the timing chain tensioner rod has sufficient travel and that the tensioner ratchet is in good condition.

3.  Check the tensioner shoe for cracks, flaking or other defects on surface "A" (sliding contact with the timing chain) and on surface "B" which is in contact with the tensioner. Replace tensioner shoe if necessary.

4.  Check the chain guide for cracks, flaking or other defects on surface "A" (sliding contact with the timing chain) and on surface "B" which is in contact with the tensioner. Replace the chain guide if necessary.

5.  Check the chain elements (bushings and plates) for wear. Replace chain if wear is excessive.

6.  Check the camshaft sprocket teeth and crankshaft sprocket for excessive wear, cracks or other defects. Replace the defective part if necessary.

7.  Make sure that the alignment mark on each camshaft sprocket is aligned with the top plane of the cylinder head.

8.  Make sure that the alignment mark (key) of the crankshaft sprocket is aligned with the plane of the cylinder block under the main bearing cap.

9.  Install the timing chain onto the sprockets, aligning the timing mark on each sprocket with the marked timing chain link (orange or blue), taking care not to let the tensioner side of the chain slack.

10.  Install the timing chain tensioner on the cylinder block, tighten the fastening bolts to a nominal torque of 10 ± 2 Nm.

11.  Remove the hard wire or hex wrench from the tensioner to release the stem. The timing chain must be tensioned using the tensioner shoe.

12.  If necessary, replace the front crankshaft oil seal , using a suitable size mandrel and a hammer to install it into the cover.

13.  Clean the mating surfaces of the cylinder block and cylinder head under the cover, as well as the flange of the timing chain cover from the remnants of the old sealant.

Note:

After degreasing, do not touch the degreased surface with your fingers.

14.  Apply sealant in a continuous bead of 2.5 ± 0.5 mm diameter to the timing chain cover flange and 4.5 ± 0.5 mm or 2.5 ± 0.5 mm diameter to the timing chain cover flange in area "A ".

Note:

Do not over-apply sealant as the sealant may get inside the cover when tightening the bolts.

15.  Apply sealant to the joint between the cylinder block and the cylinder head as shown in the figure.

16.  Apply a small amount of engine oil to the working edge of the crankshaft front oil seal around its entire circumference.

17.  Carefully install the timing chain cover on the cylinder block and cylinder head so that the sealant does not come into contact with other parts.

Note:

If, during installation, the sealant applied to the timing chain cover flange came into contact with other parts, remove the applied sealant and repeat the installation procedure (item 7-11).
Be careful not to damage the crankshaft front oil seal when installing the timing chain cover.
Cover installation must be completed within 5 minutes of sealant application.

18.  Install and tighten the timing chain cover bolts (gradually, in several stages, to the nominal torque).

Note:

The sizes and tightening torques of the timing chain cover bolts are different, do not confuse them when installing.

19.  Install and temporarily tighten the coolant pump pulley bolts, then install the accessory drive belt (in the direction of the arrow) and tighten the pump pulley bolts to a nominal torque of 9 ± 1 Nm.

20.  After installing the removed accessory drive parts,  reinstall the oil pan  and A/C compressor with bracket, replace the drain plug with a new gasket, and wait at least an hour before adding oil and starting the engine.

21.  Then install the cylinder head cover, having previously cleaned it of deposits.

22.  Pour oil into the Outlander HL engine by unscrewing the plug in the cylinder head cover.

23.  Install the engine compartment side cover (right) and engine protection mudguard.

The article is missing:

• Tool photo
• Photo of parts and consumables

Source:  carpedia.club