SENSOR GP-SPEED 4999117 - Caterpillar

Table 1
Tools Needed Quantity
9S-9082 Engine Turning Tool 1
Illustration 1 g00284799
Timing bolt location (typical example)
(1) Cover
(2) Timing bolt
(3) Plug
Remove cover (1) and plug (3) from the right front side of the flywheel housing.
Illustration 2 g00284800
Timing bolt installation (typical example)
(2) Timing bolt
(4) 9S-9082 Engine Turning Tool
Put timing bolt (2) through the timing hole in the flywheel housing. Use the 9S-9082 Engine Turning Tool (4) and a ratchet wrench with a 1/2 inch drive in order to turn the flywheel in the direction of normal engine rotation. Turn the flywheel until the timing bolt engages with the hole in the flywheel. Note: If the flywheel is turned beyond the point of engagement, the flywheel must be turned in the direction that is opposite of normal engine rotation. Turn the flywheel by approximately 30 degrees. Then turn the flywheel in the direction of normal engine rotation until the timing bolt engages with the threaded hole. This procedure will remove the play from the gears when the No. 1 piston is on the top center.
Remove the valve cover for the No. 1 cylinder head.
The inlet and exhaust valves for the No. 1 cylinder are fully closed if the No. 1 piston is on the compression stroke and the rocker arms can be moved by hand. If the rocker arms cannot be moved and the valves are slightly open, the No. 1 piston is on the exhaust stroke. Find the cylinders that need to be checked or adjusted for the stroke position of the crankshaft after the timing bolt has been installed in the flywheel. Refer to Testing And Adjusting, "Crankshaft Position for Valve Lash Setting". Note: When the actual stroke position is identified and the other stroke position is needed, remove the timing bolt from the flywheel. Turn the flywheel by 360 degrees in the direction of normal engine rotation.