Inspection and Reconditioning (Rev 1/97)
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2. Place each push rod on a completely flat surface and
use a feeler gauge to check the how much the push rod
is bent. Replace any push rod that is bent more than
.003 in. (0.075 mm).
3. Measure the length of each push rod. Replace any Push
Rods that are shorter than the minimum standard
dimension (refer to Specifications).
Tappets
1. Clean and inspect the tappets. Normally the tappets
rotate while the engine is running. This causes normal
wear to appear as concentric rings on the surface of the
tappet that contacts the cam lobe. A tappet that does not
rotate shows an abnormal wear pattern straight across
its contact surface. Replace any tappet that shows an
abnormal wear pattern, significant wear, or significant
damage.
Tappet Wear
Measuring Tappet
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2. Measure the outside diameter of each tappet. Replace
any tappets that are smaller than the wear limit (refer to
Specifications).
Oil Pump
1. Remove the rotor plate and inspect the oil pump. If the
rotor plate, the inner rotor, the outer rotor, or the oil
pump body show significant wear, scratches, or dam-
age, replace the oil pump.
Oil Pump Assembly
2. Use a feeler gauge to check the clearance between the
oil pump body and the outer rotor. The standard dimen-
sion is .0039 to .0063 in. (0.100 to 0.160 mm). The
wear limit is .0098 in. (0.250 mm). If the clearance
between the oil pump body and the outer rotor is larger
than the wear limit, replace the oil pump.
3. Use a feeler gauge to check the clearance between the
inner rotor and the outer rotor. Place the feeler gauge
between the tip of a vane on the inner rotor and the high
point of a lobe on the outer rotor. If the clearance
between the inner rotor and the outer rotor is more than
.0059 in. (0.150 mm), replace the oil pump.
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