CONTROL GP-XMSN ELECTRONIC 1308278 - Caterpillar

Illustration 5 g00832150
(5) Flywheel housing
(6) Hole for turbocharger oil drain
(7) Camshaft rear gear
(8) Timing marks
(9) Balancer gear
The procedure that follows is for flywheel housings that have a hole for the turbocharger oil drain. Access to the camshaft rear gear may be in several possible locations. The access will depend on the flywheel housing. Covers may need to be removed. The turbocharger oil drain line may need to be removed. If there is no possible access, the flywheel housing will need to be removed. Refer to Disassembly and Assembly, "Flywheel Housing - Remove and Install". Refer to "The Flywheel Housing Has Been Removed" in this section. Note: If the balancer gear is driven by the camshaft rear gear, the timing marks on the camshaft rear gear and the balancer gear must be aligned.. If the balancer gear is driven by the crankshaft, the camshaft rear gear can be removed without regarding the timing.
Illustration 6 g00832648
(10) Studs
(11) Bolt
(12) Camshaft rear gear
Remove the turbocharger oil drain line. Use Tool (A) and remove studs (10).
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The camshaft must be rotated in order to gain access to bolts (11). The last bolt will be removed when the threaded holes in the camshaft rear gear are in line with the threaded holes that mount the turbocharger oil drain line. The holes should be aligned when the engine is at top dead center. The camshaft will rotate once for every two rotations of the crankshaft. Look at the timing marks at the front of the engine on the camshaft drive gear and the idler gear. These timing marks must be aligned in order to thread Tool (C) into the camshaft rear gear. Turn the flywheel with Tool (B) and remove three of bolts (11) as the bolts become accessible.
Illustration 8 g00834303
After the other three bolts have been removed and Tool (C) has been threaded into the camshaft rear gear, remove the bolt that is accessible when the engine is at top dead center. When the other three bolts have been removed, thread Tool (C) into the camshaft rear gear. Remove the fourth bolt (11). Note: Tool (C) must be used to hold the camshaft rear gear while the camshaft is removed. Tool (C) will keep the balancer gear engaged with the camshaft rear gear.
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Tighten Tool (C) evenly in order to remove the camshaft rear gear from the camshaft.
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Check that the timing marks (V) on the camshaft drive gear and the idler gear are aligned.
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Remove two bolts (13) and plate (14) from the camshaft.
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Remove camshaft (15) from the cylinder block.
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If necessary, remove camshaft gear (16) with Tool (D) and press.
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If necessary, use Tool (E) in order to remove dowel (20) from the camshaft. The Flywheel Housing Has Been Removed
Illustration 15 g00832518
Loosen four bolts (17). loosen the bolts approximately 6.4 mm (0.25 inch). Use Tool (F) and loosen the camshaft rear gear (18) from the camshaft.
Remove Tool (F). Remove four bolts (17) and the camshaft rear gear (18).
Refer to "Engines With a Camshaft Rear Gear".