Question about 1988 Jeep Comanche
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Posted on Jan 02, 2017
SOURCE: i just need the procedure
Place each push rod in the hole in the cylinder head made for it, make sure that the rod is straight and seated in the lifter, not next to it. Rocker arms are mounted on "bridges". Place a bridge assembly where it belongs and set the rockers on top of each corresponding push rod. Tighten each bolt, alternating between each so you don't pull it over to one side. Torque spec. is very low, being only 19 foot lbs. (I generally go a bit tighter, but don't go crazy with that. 25 is probably the snapping point)
You will find that certain cam lobes will be in the "up" position. You can still tighten down the bridge as long as you are careful, or you can rotate the engine by hand so the cam turns off that spot.
After you are finished, rotate the engine twice by hand and watch each rocker arm to make sure it is moving up and down as intended. If you feel any binding, stop and find out why.
Torque on the rockers is not super critical so if you don't have a wrench that goes that low, just tighten them carefully and don't pull on the wrench like you are trying to pull the crankshaft up through the head and you will be fine.
Posted on Sep 26, 2010
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Removal & Installation
3.1L & 3.4L Engines
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for the head
Step 1: Bolts 1 - 8 to 61 N·m (45 ft. lbs.)
† Step 2: Bolts 1 - 8 to 88 N·m (65 ft. lbs.)
† Step 3: Bolts 1 - 8 (again) to 88 N·m (65 ft. lbs.)
† Step 4: Bolts 1 - 8 turn an additional 1/4 Turn.
(Do not use a torque wrench for this step.)
NOTE: Bolt torque after 1/4 turn should be over 122
N·m (90 ft. lbs.). If not, replace the bolt.
Bolts . . . . . . . . . . . . . . . . . . . .23 N·m (200 in. lbs.)
Intake Manifold Gasket Retaining
Screws . . . . . . . . . . . . . . . . . .12 N·m (105 in. lbs.)
Intake Manifold Plenum
Bolts . . . . . . . . . . . . . . . . . . . .28 N·m (250 in. lbs.)
the pivot arm ? whats that
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