Mitsubishi Montero (1991+). Manual - part 5

 

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Mitsubishi Montero (1991+). Manual - part 5

 

 

bracket. Remove timing belt upper lower cover, noting length and

location of cover bolts.

         4) If reusing timing belt, place arrow on belt to indicate

direction of belt rotation. Remove timing belt and belt tensioner.

Rotate crankshaft and align all timing marks. See  Fig. 13. Loosen

center tensioner bolt, and remove timing belt.

         5) If camshaft sprocket requires removal, install wrench on

hexagonal portion of camshaft. Hold camshaft while loosening camshaft

sprocket bolt. Remove camshaft sprocket bolt and camshaft sprocket.

Fig. 13:  Aligning Timing Marks Initial Alignment (DOHC)

Courtesy of Mitsubishi Motor Sales of America, Inc.

         Inspection (DOHC)

         Inspect timing belt for wear on edges of drive teeth. Inspect

belt for oil and coolant contamination. Replace belt if damaged or

contaminated. Inspect belt tensioner for smooth rotation. Replace if

defective.

         Installation (DOHC)

         1) Install camshaft sprockets (if removed). Using wrench,

hold camshaft at hexagonal section and tighten camshaft sprocket bolt

to specification. See TORQUE SPECIFICATIONS (3000GT) table at end of

article.

         2) Place automatic tensioner assembly in a soft-faced vise.

Squeeze rod back into automatic tensioner in small increments until

both rod and housing holes are aligned. Install a .055" (1.39 mm)

diameter wire through both holes.

         3) Remove automatic tensioner from vise, and install assembly

with wire installed. Install crankshaft sprocket (if removed). Align

timing marks on crankshaft and camshaft sprockets. See  Fig. 13.

CAUTION:  Turning camshaft sprockets while No. 1 cylinder is at TDC

          may damage valve and piston. Use care when aligning timing

          marks.

         4) To lower No. 1 piston from TDC and prevent valve and

piston contact, turn crankshaft back 3 sprocket teeth (measured at

timing mark). Starting with front bank of cylinders, ensure intake and

exhaust camshaft timing marks are not within shaded area of figure.

See Fig. 14.

         When camshaft sprocket timing marks are in indicated area,

camshaft is under valve spring pressure and may rotate suddenly,

pinching hand between sprockets. Use care when aligning timing marks.

Fig. 14:  Adjusting Timing Marks to Prevent Valve & Piston Damage

(DOHC)

Courtesy of Mitsubishi Motor Sales of America, Inc.

         5) If camshaft sprocket timing mark is within indicated area,

carefully rotate camshaft sprocket until timing mark is located in

nearest safe area. See Fig. 14.

         6) Rotate either camshaft sprocket clockwise to align timing

marks as shown in Fig. 15. If camshaft sprocket is turned past timing

mark, turn it counterclockwise to realign it. Repeat procedure for

other front bank camshaft sprocket.

Fig. 15:  Aligning Timing Marks Final Alignment (DOHC)

Courtesy of Mitsubishi Motor Sales of America, Inc.

         7) Repeat steps 4)-6) for rear cylinder bank camshafts. Align

crankshaft timing mark. Install timing belt on sprockets in sequence.

See Fig. 16. Use spring-type paper clips to secure belt on sprockets.

Use offset box-end wrenches on camshaft sprocket bolts to keep

camshafts from turning during belt installation.

NOTE:    If necessary, crankshaft sprocket may be turned one tooth

         counterclockwise to aid belt installation.

Fig. 16:  Installing Timing Belt (DOHC)

Courtesy of Mitsubishi Motor Sales of America, Inc.

         8) Rotate timing belt tensioner pulley until pin holes are

located above center bolt. See Fig. 17. Push tensioner pulley against

belt, and temporarily tighten center bolt. Ensure all timing marks are

still aligned, and remove clips.

Fig. 17:  Adjusting Timing Belt Tensioner (DOHC)

Courtesy of Mitsubishi Motor Sales of America, Inc.

         9) Rotate crankshaft 1/4 revolution counterclockwise. Rotate

crankshaft clockwise until timing marks are realigned. Loosen

 

 

 

 

 

 

 

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