Valves - Detroit Diesel MBE 4000 Service Manual

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VALVES

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The valves are controlled by mushroom tappets, pushrods, and rocker arms. The intake and

exhaust valves are opened and closed by a valve-guided bridge.

Valve Lift Checking

Check the valve lift as follows:

Do this procedure to determine, without removing the camshaft, if the camshaft, or

parts of the valve train, have suffered excessive wear. If the camshaft itself is suspect,

check the lift on every valve.

1. Remove the cylinder head cover. Refer to section 1.1.1.

2. Remove the inspection cover on the flywheel housing and install the engine cranking tool

(J 46167 or 407 589 00 63 00). Tighten the bolts on the cranking device 25 N·m (18 lb·ft).

Check cylinders one at a time.

3. Select the first cylinder. Using the engine cranking tool (J 46167 or 407 589 00 63 00),

turn the flywheel until the piston in that cylinder is at ignition TDC (top dead center).

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All information subject to change without notice.

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