Detroit Diesel 4000 Series, Service Manual, Page: 726 / 2706

SERIES 4000 12/16V SERVICE MANUAL
C 053.05.05 – REMOVAL OF CAMSHAFT THRUST BEARING
Removing Camshaft Thrust Bearing
To avoid personal injury when barring the engine over,
stand clear so that the crankshaft will not unexpectedly
rotate and cause loss of control of barring tool.
Perform the following steps to remove the camshaft thrust bearing:
1. Using barring tool, turn engine in normal direction of rotation until TDC mark and arrow
on flywheel housing are aligned. See Figure 434.
Figure 434 Removing Camshaft Thrust Bearing (Marine only)
2. If rocker arms on cylinder A1 are unloaded, the piston is in firing TDC.
3. If rocker arms on cylinder A1 are loaded, the piston is in overlap TDC.
4. Remove valve drive. Refer to section C 055.05.05.
5. On DDEC engines, use a dial gage in the A1 cylinder kit to determine TDC.
Refer to section C 037.05.05.
All information subject to change without notice.
C -580
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