Rocker arms

[Chip682]

I am going to replace my rocker arms soon on my 92 xj 4.0 I have a repair book but it isnt very detailed. It says to put #1 cylinder to Top Dead Center and then remove the rockers a 1/4 turn at a time. Can you then just take out the rest or do you have to put #2 to TDC to get those out and then #3 and so on? Should i do them one at a time or all at once?

 

[SteelHeadz]

I don't recall having to set the Ignition timing on Top dead center just to replace the rocker arms. Here's the instructions from the Factory service manual.

ROCKER ARMS AND PUSH RODS

This procedure can be done with the engine in or out of the vehicle.
REMOVAL

1. Remove the engine cylinder head cover.
2. Check for rocker arm bridges which are causing misalignment of the rocker arm to valve tip area.
3. Remove the capscrews at each bridge and pivot assembly . Alternately loosen the capscrews one turn at a time to avoid damaging the bridges.
4. Remove the bridges, pivots and corresponding pairs of rocker arms .Place them on a bench in the same order as removed.
5. Remove the push rods and place them on a bench in the same order as removed

INSTALLATION

1. Lubricate the ball ends of the push rods with Mopar Engine Oil Supplement, or equivalent and install push rods in their original locations. Ensure that the bottom end of each push rod is centered in the tappet plunger cap seat.
2. Using Mopar Engine Oil Supplement, or equivalent, lubricate the area of the rocker arm that the pivot contacts. Install rocker arms, pivots and bridge above each cylinder in their originally position.
3. Loosely install the capscrews through each bridge.
4. At each bridge, tighten the capscrews alternately, one turn at a time, to avoid damaging the bridge. Tighten the capscrews to 28 N·m (21 ft. lbs.) torque.
5. Install the engine cylinder head cover.

 

[Chip682]

Thanks i didnt think it could be as simple as just taking them off.