SERVICE MANUAL NUMBER 30
496 CID (8.1L)
Camshaft
Measuring Lobe Lift
NOTE: Procedure is similar to checking valve timing. If improper valve operation is indi-
cated, measure lift of each push rod in consecutive order and record readings.
1.
2.
Remove valve mechanism.
Adapt dial indicator to cylinder head by temporarily installing suitable stud in bolt hole.
Position indicator with ball socket adaptor tool, from Lift Indicator Tool Kit, on push rod.
Ensure that push rod is in lifter socket.
a
72380
a - Ball Socket Adapter Tool (J-8520-1)
3.
4.
Rotate torsional damper slowly in direction of rotation until lifter is on heel of cam lobe.
At this point, push rod will be in its lowest position.
Set dial indicator on zero, then rotate torsional damper slowly (or attach an auxiliary
starter switch and “bump” engine over) until push rod is in fully raised position.
5.
6.
Compare total lift, recorded from dial indicator, with “Specifications.”
Continue to rotate engine until indicator reads zero. This will be a check on accuracy of
original indicator reading.
7.
8.
If camshaft readings for all lobes are within specifications, remove dial indicator assem-
bly and hardware.
Install and torque valve mechanism.
90-863161 SEPTEMBER 2000
INDEX
Page 3A-87
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 496 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
(2 votes, average: 4 out of 4)
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Great down load . it was all there an more