Detroit Diesel MBE 4000 Service Manual page 222

1.22 CAMSHAFT AND CAMSHAFT SENSOR
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14. Pull the tappets (valve lifters) out of the block. Mark the tappets, in order, as removed.
See Figure 1-133.
1. Cylinder Block
2. Camshaft Entry Hole
Figure 1-133
15. Clean and inspect the tappets. Replace the tappets if there are signs of damage or wear, or
if any of the measurements do not meet the specifications listed in Table 1-49.
Description
Tappet Outside Diameter
Tappet Outside Diameter
Tappet Housing Diameter (in cylinder
block)
Tappet Housing Diameter (in cylinder
block)
Table 1-49 Valve Tappet Specifications
[a] Measure the outside diameter of each tappet.
[b] Measure the diameter of the tappet housing in the cylinder block.
16. Inspect the camshaft. Refer to section 1.22.2.1.
1-174
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Removing the Tappets
Repair Stage
Standard
Repair Stage I
Standard
Repair Stage I
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3. Tappet (valve lifter)
4. Fuel Pump Driven Gear
Specifications, mm (inch)
29.931-29.952 (1.1784-1.1792)
30.444-30.465 (1.1986-1.1994)
30.000-30.021 (1.1811-1.1819)
30.500-30.525 (1.2008-1.2018)
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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