1991 MITSUBISHI MONTERO belt

revolutions clockwise. DO NOT rotate counterclockwise. Realign all
timing marks. Tighten belt tensioner bolts to specification. Using
belt tension gauge, measure belt tension halfway between crankshaft
sprocket and camshaft sprocket on side opposite belt tensioner.
7) Belt tension should be 57.3-83.8 lbs. (26-38 kg). To
install remaining components, reverse removal procedure. Install
proper length bolts in timing belt covers. See Fig. 9. Tighten bolts
to specification. See TORQUE SPECIFICATIONS (MONTERO & PICKUP) table.
Fig. 9: Identifying Timing Belt Cover Bolt Lengths (MONTERO & PICKUP)\
Courtesy of Mitsubishi Motor Sales of America, Inc.

Fig. 10: Engine Support Bracket Bolt Removal Sequence (3000GT)
Courtesy of Mitsubishi Motor Sales of America, Inc.
NOTE: Apply spray lubricant on reamer bolt during removal as bolt
is sometimes seized in engine support bracket.
Removal (3000GT)
1) Remove lower splash shields. Remove cruise control
actuator (if equipped). Remove all drive belts. Disconnect electrical
connector at power steering pump. Remove A/C tensioner pulley and
mounting bracket.
2) Remove power steering pump with hoses connected, and wire
aside. Support engine. Remove front engine mount through bolt and
front engine mount. Remove timing belt No. 1 upper outer cover and
gaskets. See Fig. 7.
3) Remove engine support bracket bolts in proper sequence.
See Fig. 10 . Remove engine support bracket. Remove cover cap and
timing belt No. 2 upper outer cover and gaskets. Using Holder
(MB990767) and Adapter Bolts (MD998719), remove crankshaft pulley.
4) Remove lower outer cover, gaskets and flange. See Fig. 7.
Rotate crankshaft and align all timing marks. See Fig. 8. Loosen belt
tensioner bolt, and rotate belt tensioner counterclockwise to release
belt tension.
5) If reusing timing belt, place arrow on belt to indicate
direction of belt rotation. Remove timing belt and belt tensioner.
6) If camshaft sprocket requires removal, install Holder
(MB990767) with Adapter Bolts (MD998719) on camshaft sprocket. Remov\
e
camshaft sprocket bolt and camshaft sprocket. Remove rear timing belt
cover (if required).
Inspection (3000GT)
Inspect timing belt for wear on edges of drive teeth. Inspect
belt for oil contamination. Replace belt if damaged or contaminated.

Inspect belt tensioner for smooth rotation. Replace if defective.
Installation
1) Install rear timing belt cover. Tighten bolts to
specification. See TORQUE SPECIFICATIONS (3000GT) table at end of
article. Install camshaft sprockets (if removed). Using holder, hold
camshaft and tighten camshaft sprocket bolt to specification.
2) Install belt tensioner and spring. Ensure spring is
secured on pin of water pump and engaged in hole of belt tensioner
with hook of spring pointing from cylinder block.
3) Rotate belt tensioner counterclockwise as much as
possible, and temporarily tighten bolt. Align all timing marks with
No. 1 cylinder at TDC of compression stroke. See Fig. 8.
4) Install timing belt on crankshaft sprocket, rear cylinder
bank camshaft sprocket, water pump pulley, front cylinder bank
camshaft sprocket and timing belt tensioner. Ensure belt is installed
in original direction of rotation and all timing marks are aligned.
Install flange on crankshaft. Loosen belt tensioner bolts slightly,
and allow tensioner to apply belt tension.
5) Using Crankshaft Socket (MD998716), rotate crankshaft 2
revolutions clockwise. DO NOT rotate counterclockwise. Realign all
timing marks. Tighten belt tensioner bolts to specification. See
TORQUE SPECIFICATIONS (3000GT) table. Using belt tension gauge,
measure belt tension halfway between crankshaft sprocket and camshaft
sprocket on side opposite belt tensioner.
6) Belt tension should be 46.3-63.3 lbs. (21-29 kg). To
install remaining components, reverse removal procedure. Install
proper length bolts in timing belt covers and engine support bracket.
See Figs. 9 and 10. Tighten bolts to specification. See TORQUE
SPECIFICATIONS (3000GT) table.
NOTE: Engine support bracket reamer bolt must be tightened slowly
while spraying lubricant on bolt.
Fig. 11: Identifying Timing Belt Cover Bolt Length (SOHC)
Courtesy of Mitsubishi Motor Sales of America, Inc.
Removal (DOHC)
1) Remove lower splash shields. Remove cruise control

actuator (if equipped). Remove all drive belts. Remove alternator.
Remove drive belt tensioner assembly.
2) Using Holder (MB990767) and Adapter Bolts (MD998754),
remove crankshaft pulley. See Fig. 12. Disconnect brake fluid level
sensor. Remove upper timing belt covers. Support engine. Remove front
engine mount through bolt and front engine mount.
NOTE: Apply spray lubricant on reamer bolt during removal as bolt
is sometimes seized in engine support bracket.
Fig. 12: Exploded View of Timing Belt Components (DOHC)
Courtesy of Mitsubishi Motor Sales of America, Inc.
3) Remove drive belt idler pulley. Remove engine support
bracket bolts in proper sequence. See Fig. 10. Remove engine support

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

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. Alig\
n
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

tensioner center bolt. Using Tensioner Pulley Socket (MD998767) and
torque wrench, apply 84 INCH lbs. (9.5 N.m). See Fig. 17. Retighten
center bolt to specification. See TORQUE SPECIFICATIONS (3000GT) table\
at end of article. Ensure tensioner pulley does not rotate while
tightening center bolt.
10) Ensure wire installed in automatic tensioner can be
easily removed and installed. Rotate crankshaft 2 revolutions
clockwise. Wait 5 minutes. Ensure wire can still be removed and
installed easily or automatic tensioner rod projects from tensioner
body .150-.177" (3.8-4.5 mm).
11) If rod projection is not to specification, repeat steps
9) and 10). To complete installation, reverse removal procedure.
Install proper length bolts in timing belt covers. Install bolts into
engine support bracket in reverse order of removal sequence. See
Fig. 10 . Tighten bolts to specification. See TORQUE SPECIFICATIONS
(3000GT) table.
NOTE: Engine support bracket reamer bolt must be tightened slowly
while spraying lubricant on bolt.
CAMSHAFT & ROCKER ARMS
Removal (SOHC)
1) Remove PCV valve and breather hoses. Remove timing belt,
camshaft sprocket and rear timing belt cover. See TIMING BELT under
REMOVAL & INSTALLATION. Remove rocker covers and gaskets. Remove
circular packing from rear of camshafts.
2) Remove camshaft oil seal from front of cylinder head or
distributor adapter. Remove distributor adapter and "O" ring. Install
Valve Lash Adjuster Holder (MD998443) on rocker arm. See Fig. 18. Note
arrow marks on bearing caps and cylinder head. See Fig. 19.
3) Bearing cap location number is stamped on front side of
bearing cap. Remove bearing cap bolts. Keep components in order for
reassembly reference. Remove rocker arm assembly. Remove camshaft from
cylinder head.
Fig. 18: Installing Valve Lash Adjuster Holder (SOHC)
Courtesy of Mitsubishi Motor Sales of America, Inc.