Removing the nozzle sleeves
Installing the valves
33.
Insert the expander screw on tool 884541 into
the copper sleeve and screw anti-clockwise until
the screw has expanded and fastened in the
sleeve. Then pull hard so that the threads go into
the copper material. Fit the yoke on the stud
bolts holding the injector. Screw on the nut and
rotate until the sleeve is removed.
35. Thoroughly clean the cylinder head, valve guides
and valve seats. Use a small brush. Check that
the bevel on the seats is correctly ground by
applying marking blue to the bevel on the valve
disc and rotating it against the seat under light
pressure. If the blue is not distributed evenly on
the entire bevel surface of the seat (this indicates
a leaky valve), grind the valve further and re-
check until results are successful. The width of
the seat should be approx. 1 mm (0.04”).
Oil the valve stems before filling them in their re-
spective guides. IMPORTANT! Make sure that
the valves and valve springs are re-filled in their
original positions. Place the cylinder head on its
edge and fit the valve springs and collets 2. Use
a valve spring tool. Finally fit the rubber seal 1
(MD6A) on the intake valves.
34.
Replacing the 0-ring which seals between sleeve
and cylinder head.
Dip the 0-ring in soapy water before fitting it.
Wash and blow clean before filling the new
injector sleeve with tool 884539. knock in the
sleeve until it bottoms. Check to make sure that
the 0-ring is not damaged or has moved.
Checking the cylinder head level finish
36.
If there is any doubt as to the level finish of the
cylinder head after carrying out repairs, check as
follows:
Completely disassemble the cylinder head and
clean it thoroughly. Measure with the help of a
steel ruler (check the ruler against a flat disc) by
placing it on the cylinder head face as shown by
the arrows in the diagram below. Then measure
with a feeler gauge the gap between the ruler
and the face of the cylinder head at the marked
measuring points. A maximum gap of 0.00—0.10
mm (0.00—0.004”) measured crisscross (see
diagram below) and 0.00—0.10 mm (0.00—
0.004”) measured laterally (see diagram below)
is approved. If the measured gap is between
0.10 mm (0.004”) and 0.20 mm (0.008”), then the
gap must be grinded. If the gap exceeds 0.20
mm (0.008”), replace the cylinder head with a
new one.
34.
a. Oil the spreader tool
884537 and push the
tool into the sleeve (en-
sure that the bolt is
screwed back suffi-
ciently). Place nuts or
washers on the stud
bolts so that the yoke
can be securely attach-
ed with nuts. Screw the
tool down as far as the
recess in the injector
sleeve allows. Thus
pressing out the sleeve.
Remove the tool.
18
| Categories | Volvo Penta Manuals |
|---|---|
| Tags | Volvo Penta MD6A, Volvo Penta MD7A |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(2 votes, average: 3.5 out of 4)
Marine readers have rated Volvo Penta MD6A MD7A Workshop Manual 3.5 out of 4.0 based on 2 product reviews. good manual just what I needed
Well i haven't read it yet but it's gonna help me out when I do.