3516E Engines for 994K Wheel Loaders Caterpillar

Introduction

Use this procedure to find the top center position for the number 1 piston.

Required Tools

Check Preparation

1. Turn off the engine.
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   Illustration 1	g03886447
   Timing bolt location (typical example) (1) Cover (2) Timing bolt (3) Plug

2. Remove cover (1) and plug (3) from the bottom side of the flywheel housing. Refer to Illustration 1.

3. Put timing bolt (2) through the timing hole in the flywheel housing. Use the 9S-9082 Engine Turning Tool and a 1/2 inch drive ratchet wrench 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. Refer to Illustration 1.

   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.

4. Remove the camshaft cover for either of the rear two cylinders on the 3500E series engine.

5. 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 camshaft has the timing slot facing out (able to be pinned). If the camshaft timing slot is facing inside (not able to be pinned), 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 Fuel Injector Adjustment and 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.