Volvo Penta TAMD61A, Руководство по ремонту

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68
6(x) series ...... 8.000 8.000 7.8 7.8
7(x) series ...... 8.006 8.268 7.8 7.8
Camshaft lift Min lift height
in mm in mm
m
inlet
l
exhaust
m
inlet
l
exhaust
A
B
Repair instructions
2
Adjust the length of the push rod in the tool, so as to
give a pre-load on the exhaust valve lifter.
Crank the engine until the push rod of the tool is at its
lowest position (A).
Check that the push rod has pre-load and zero the dial
gauge.
Turn the flywheel round until the push rod of the tool is
at its highest position (B).
Read off the value on the dial gauge.
Note the value.
3
Move the measurement tool push rod over to the inlet
valve lifter and do the same measurement.
Move the tool and measure the lift height of each cyl-
inder in turn. None of the values may be less than the
minimum lift height values given in the table below.
Lift heights, camshaft
4
Install the push rods in the correct order, install the
rocker support bridges and torque the screws.
Tightening torque: for the 61 series with steel bearing
caps*, torque to
65 Nm (6.5 kpm).
Later models of the 61 series and all engines in the 62
and 63 series have aluminium bearing caps. Tighten-
ing torque is
50 Nm (5.0 kpm).
On the 71 and 72 series, the torque used is 65 Nm
(6.5 kpm).
Valve adjustment, please refer to page 52.
* The steel bearing cap has been replaced by an aluminium bear-
ing cap as a spare part.
Camshaft, removal
Special tool: 9998079
Preparatory work
• Remove the components which cover the valve
lifter access hatch, as in items 1–19 in the
“Cylinder head, removal” method on pages 32
and 33.
Remove the timing gear as in items 6 in the “Tim-
ing gear, removal” method on page 62.
1
Remove the valve covers.
2
Remove the rocker support bridges (1) and con rods
(2).
NOTE! Mark the con rods or put them in a stand so
that they go back in the same places on re-assembly.
1
2