Detroit Diesel Series 60 Manual (EN)

NUMBER: 60 S.M. REF.: 1.23 ENGINE: 60 DATE: December 2002 SUBJECT: COMPACT GEAR TRAIN ASSEMBLY INTRODUCTION Detroit Diesel has released a new Compact Gear Train Assembly for the Series 60 2002 engine. This new assembly offers weight savings, noise reduction and height reduction. The bullgear is a straight cut gear that now rides on bushings. DETAILS AND REASON Series 60 2002 Engines are equipped with a new Compact Gear Train Assembly. Camshaft, Camshaft Drive Gear and Camshaft Gear Cover will be installed and removed as a assembly. For engines equipped with a Compact Gear Train Assembly remove camshaft assembly as follows. 1. Rotate the engine by hand to get the No. 1 piston at TDC.

Do this by installing the crankshaft timing pin J 45947 into its bracket and the barring engine over by hand until the timing pin drops into the locating hole in the crankshaft, the engine is now at TDC on cylinder No.1. See Figure 1.

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1. Timing Pin Figure 1 Crankshaft Timing Pin 2. Remove the five bolts for the camshaft gear cover inspection plate and remove the plate. To verify camshaft timing proceed as follows: [a] Look at the timing hole in the camshaft gear. [b] The timing hole should be aligned with the timing hole in the back of the gear cover, located at the 5 o'clock position. See Figure 2.

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[c] If the timing holes are not aligned correctly remove the crankshaft timing pin and rotate the engine one more complete revolution. When the timing pin drops back into the hole in the crankshaft check the timing of the camshaft. Refer to step 2. 1. Camshaft Gear Cover 2. Timing Hole Figure 2 Timing Verification

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3. Remove bolt from front of camshaft gear cover. See Figure 3. 1. Bolt 2. Camshaft Gear Cover Figure 3 Camshaft Gear Cover Bolt NOTE: If timing is correct and the repair being made does not require that the engine is turned over, clean off an area where the camshaft gear and idler gear teeth mesh and mark the teeth with a suitable marker for a reference point when reassembling the camshaft. This procedure will make assembly easier.

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