Disassembling the Cam Plate
With the cam plate removed and the tensioners retracted, remove the cam plate bearing retainer by removing four small torx head screws. The retainer can be discarded if it is not going to be reused for your particular job.
A hydraulic press or arbor press should be used to press out the cams & bearings. However, this is a light press fit. When dealing with bearings that are not going to be reused, it is acceptable to tap out with a rubber or brass mallet.
Unload spring tension from the can chain tensioners and remove the retaining clips so that the tensioners can be removed from the cam plate. If the motor has experienced catastrophic failure, there may be steel and aluminum debris spread throughout the motor. When this is the case, it is important to remove the oil pump plunger and spring for proper cleaning and inspection of the plunger cavity. A specialty tool can be purchased or one can be easily made.
Clean this area thoroughly and reassemble. There is, typically, no need to replace the plunger or spring as long as the plunger can move freely within the channel. In our experience, the factory plunger spring is acceptable to reuse. There are heavier aftermarket springs available, but we suggest using an OEM spring. If, on the other hand, the plunger is seized within the cam plate channel, the entire cam plate with have to be replaced.
In our next video, we will pick up with a demonstration of measuring crankshaft run out.