MD6 - Timing

T

Trevykins

.
Nov 11, 2016
96
Nimble Arctic Toronto
Hi again! I'd rather be sailing but . . .

(1) Has anyone got instructions how to re-install the injector pump
for the correct timing of the pump to the engine?
(2) Reference is made in the VODCA materials to a Volvo MD6 manual
that contains these instructions. Has anyone got a copy of this they
are willing to share?
(3) Is there supposed to be a timing mark on the flywheel?

Desperately yours, Trevor (V2915)
 
G

groundhogyh

.
May 30, 2006
1,075
There is a timing mark. Think it's on the edge of the flywheel and not the front. Like maybe a 1/8 inch line that was banged into the metal. Hard to see if paint is on it.

Search the vega archives. There are quite a few references and postings on this. Some of them give additional info probably not found in the manuals.
rb

kins trevorleech@... wrote:
Hi again! I'd rather be sailing but . . .

(1) Has anyone got instructions how to re-install the injector pump
for the correct timing of the pump to the engine?
(2) Reference is made in the VODCA materials to a Volvo MD6 manual
that contains these instructions. Has anyone got a copy of this they
are willing to share?
(3) Is there supposed to be a timing mark on the flywheel?

Desperately yours, Trevor (V2915)
 
T

trevy_kins

.
Oct 31, 2019
230
Thanks Groundhog. It appears that you were the author of many of the
earlier postings. I will look again for that timing mark. Did you have
to remove the paint to find yours, or use a magnifying glass? Trev
(V2915)



________________________________

From: AlbinVega@yahoogroups.com [mailto:AlbinVega@yahoogroups.com] On
Behalf Of groundhog
Sent: June 2, 2008 4:37 PM
To: AlbinVega@yahoogroups.com
Subject: Re: [AlbinVega] MD6 - Timing



There is a timing mark. Think it's on the edge of the flywheel and not
the front. Like maybe a 1/8 inch line that was banged into the metal.
Hard to see if paint is on it.

Search the vega archives. There are quite a few references and postings
on this. Some of them give additional info probably not found in the
manuals.
rb

kins trevorleech@... mailto:trevorleech%40hotmail.com
wrote:
Hi again! I'd rather be sailing but . . .

(1) Has anyone got instructions how to re-install the injector pump
for the correct timing of the pump to the engine?
(2) Reference is made in the VODCA materials to a Volvo MD6 manual
that contains these instructions. Has anyone got a copy of this they
are willing to share?
(3) Is there supposed to be a timing mark on the flywheel?

Desperately yours, Trevor (V2915)
 
G

groundhogyh

.
May 30, 2006
1,075
I did author some of them, but I was also seeking info, so the best posts are probably not mine.

You don't need a magnifying glass, but it is hard to spot. Once you find it the first time, you can always find it.
gh

Trevor Leech leecht@... wrote:
Thanks Groundhog. It appears that you were the author of many of the
earlier postings. I will look again for that timing mark. Did you have
to remove the paint to find yours, or use a magnifying glass? Trev
(V2915)

________________________________

From: AlbinVega@yahoogroups.com [mailto:AlbinVega@yahoogroups.com] On
Behalf Of groundhog
Sent: June 2, 2008 4:37 PM
To: AlbinVega@yahoogroups.com
Subject: Re: [AlbinVega] MD6 - Timing

There is a timing mark. Think it's on the edge of the flywheel and not
the front. Like maybe a 1/8 inch line that was banged into the metal.
Hard to see if paint is on it.

Search the vega archives. There are quite a few references and postings
on this. Some of them give additional info probably not found in the
manuals.
rb

kins trevorleech@... mailto:trevorleech%40hotmail.com
wrote:
Hi again! I'd rather be sailing but . . .

(1) Has anyone got instructions how to re-install the injector pump
for the correct timing of the pump to the engine?
(2) Reference is made in the VODCA materials to a Volvo MD6 manual
that contains these instructions. Has anyone got a copy of this they
are willing to share?
(3) Is there supposed to be a timing mark on the flywheel?

Desperately yours, Trevor (V2915)
 
G

groundhogyh

.
May 30, 2006
1,075
I just remembered that I want to post hopefully a final comment on a series of previous posts that I made. This is primarily for anyone that comes in here and does some searching.

In the last two years I think, I had a string of posts where I was doing all kinds of checking of my MD6A. I was all over that thing, cleaning and adjusting.

The problem was, that I could only go like 2 knots. If I full throttled it, I would get black char and smoke and stuff comming out the back.

Well, being new at this diesel biz... I didn't know any better.
I finally got sick of it and tried to hire a REAL mechanic... I hunted down an old guy. Salty. Been in the business for decades....

We were talking on the phone and he just laughed and said.... "Dive down under the boat and scrape off the barnacles from your prop, then call back and tell me I'm a genius".

So we hung up and I did what he said.
He didn't mention about wearing gloves though. Oww. (18" prybar works wonders).

At minimum throtle, my boat speed improved from like 0.6 knots to 1.2 knots. THe boat performed much better (but this was clearly not the BIG solution). I called him back and told him that he is 99% genius (he forgot the gloves thing).

That's when I started thinking and investigating being "over-propped". That's where your prop is too agressive in either diameter or pitch.

It's like if you were on your 10-speed bike and you had to go up a hill, but could only use 10th gear. If you could go to 3rd gear, your RPMs would go up and your overall speed would increase too.

About a month ago, my boat was lifted and I scratched off the paint to expose the prop part number. It was 1 inch in diameter too big and 2 inches in pitch too agressive.
I was thrilled to see this problem because I was all out of other answers.

I had the prop shop bend 2 inches of pitch out of the prop and put it back on.
I now go 4.5 knots full throttle, with no black smoke.

I know I need to adjust the prop again and will do so next time the boat is out. For now, 4.5 knots is fine for me (and having an answer to the big question of my boat, and knowing I have a good motor).

Hope this helps someone..
groundhog
 
N

n3935j

.
Oct 31, 2019
58
Trevor,
If you have removed the injector pump, when you install it you have make sure its in time with the valve train. There are three marks on the intermediate gear -one of which has to be aligned with the timing mark on the injector pump drive gear . I'll explain how it's done if you need to know. Otherwise, setting the timing is done with the lower injector pump side plate removed, and after you spot the very faint timing line on the disc inside, you rotate the pump after loosening the retention nuts so that the it's lined up with the indicator when the flywheel 10 BTDC mark is lined up with the mark on block the ( the mark is a bead of weld).
Let me know if you want any information. I recently re installed my pump, and because I turned the engine while it was off, I had to get it all back in time.

Trevor Leech leecht@... wrote:
Thanks Groundhog. It appears that you were the author of many of the
earlier postings. I will look again for that timing mark. Did you have
to remove the paint to find yours, or use a magnifying glass? Trev
(V2915)

________________________________

From: AlbinVega@yahoogroups.com [mailto:AlbinVega@yahoogroups.com] On
Behalf Of groundhog
Sent: June 2, 2008 4:37 PM
To: AlbinVega@yahoogroups.com
Subject: Re: [AlbinVega] MD6 - Timing

There is a timing mark. Think it's on the edge of the flywheel and not
the front. Like maybe a 1/8 inch line that was banged into the metal.
Hard to see if paint is on it.

Search the vega archives. There are quite a few references and postings
on this. Some of them give additional info probably not found in the
manuals.
rb

kins trevorleech@... mailto:trevorleech%40hotmail.com
wrote:
Hi again! I'd rather be sailing but . . .

(1) Has anyone got instructions how to re-install the injector pump
for the correct timing of the pump to the engine?
(2) Reference is made in the VODCA materials to a Volvo MD6 manual
that contains these instructions. Has anyone got a copy of this they
are willing to share?
(3) Is there supposed to be a timing mark on the flywheel?

Desperately yours, Trevor (V2915)
 
T

trevy_kins

.
Oct 31, 2019
230
Hey Gang, thank you everyone for your excellent help on this question!
It is wonderful to have such a wealth of experienced, generous,
sympathetic Vegatarians available over the internet when we run into a
snag. Will let you know how I manage with the timing on the weekend.
Patrick, I may well be in touch if I get confounded again in the
process. Wish me luck, Trev



________________________________

From: AlbinVega@yahoogroups.com [mailto:AlbinVega@yahoogroups.com] On
Behalf Of Patrick McDonald
Sent: June 5, 2008 4:08 PM
To: AlbinVega@yahoogroups.com
Subject: RE: [AlbinVega] MD6 - Timing



Trevor,
If you have removed the injector pump, when you install it you have make
sure its in time with the valve train. There are three marks on the
intermediate gear -one of which has to be aligned with the timing mark
on the injector pump drive gear . I'll explain how it's done if you need
to know. Otherwise, setting the timing is done with the lower injector
pump side plate removed, and after you spot the very faint timing line
on the disc inside, you rotate the pump after loosening the retention
nuts so that the it's lined up with the indicator when the flywheel 10
BTDC mark is lined up with the mark on block the ( the mark is a bead of
weld).
Let me know if you want any information. I recently re installed my
pump, and because I turned the engine while it was off, I had to get it
all back in time.

Trevor Leech leecht@... mailto:leecht%40lao.on.ca wrote:
Thanks Groundhog. It appears that you were the author of many of the
earlier postings. I will look again for that timing mark. Did you have
to remove the paint to find yours, or use a magnifying glass? Trev
(V2915)

________________________________

From: AlbinVega@yahoogroups.com mailto:AlbinVega%40yahoogroups.com
[mailto:AlbinVega@yahoogroups.com mailto:AlbinVega%40yahoogroups.com ]
On
Behalf Of groundhog
Sent: June 2, 2008 4:37 PM
To: AlbinVega@yahoogroups.com mailto:AlbinVega%40yahoogroups.com
Subject: Re: [AlbinVega] MD6 - Timing

There is a timing mark. Think it's on the edge of the flywheel and not
the front. Like maybe a 1/8 inch line that was banged into the metal.
Hard to see if paint is on it.

Search the vega archives. There are quite a few references and postings
on this. Some of them give additional info probably not found in the
manuals.
rb

kins trevorleech@... mailto:trevorleech%40hotmail.com
mailto:trevorleech%40hotmail.com
wrote:
Hi again! I'd rather be sailing but . . .

(1) Has anyone got instructions how to re-install the injector pump
for the correct timing of the pump to the engine?
(2) Reference is made in the VODCA materials to a Volvo MD6 manual
that contains these instructions. Has anyone got a copy of this they
are willing to share?
(3) Is there supposed to be a timing mark on the flywheel?

Desperately yours, Trevor (V2915)
 
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