kleine39kermit
Member
Is there a timing mark on the flywheel that you can see and what is the firing order?
Is the timing mark always on Nbr one cylinder TDC?
Is the timing mark always on Nbr one cylinder TDC?
- Thread starter kleine39kermit
- Start date
Bern
Well-known Member
- Location
- Mount Vernon, WA
Look for a access plate and window near the oil pan below the starter. Firing order should be cast into the intake manifold.
The zero mark on the flywheel corresponds to TDC for number 1 and 4 cylinders.
The zero mark on the flywheel corresponds to TDC for number 1 and 4 cylinders.
kleine39kermit
Member
This on a 4 cyl. Diesel. This would be same as my Ford 640 which is 1-2-4-3. So you could be off 180 degrees at one of the 0's on the fly wheel.
kleine39kermit
Member
This is on a Ford 6600 Diesel engine.If the 0 on the fly wheel is either TDC on cylinder's 1 or 4 then you could be off 180 Deg. by using the first 0.My Ford 640 with the 134 cu.in. engine is that way. The firing order is 1-2-4-3. The engine has to make 2 revolutions to alwauys come back up on TDC on #1 cylinder.
Bern
Well-known Member
- Location
- Mount Vernon, WA
I'll correct and/or add to your last sentence: the engine has to make two revolutions to always come back up on TDC #1 compression stroke, which is where you want it for pump timing. Which means pump timing could be off 180 if you're not sure whether number 1 is on compression or exhaust stroke. It ends up being a coin toss if you simply run with the first zero you come up on.
As far as the firing order is concerned, it's either 1-3-4-2 or 1-2-4-3. I've never cared to memorize it becuase it's cast into the intake manifold. Besides, I don't need to know it on a diesel because I don't have any plug wires to route like I would on a gasser.
As far as the firing order is concerned, it's either 1-3-4-2 or 1-2-4-3. I've never cared to memorize it becuase it's cast into the intake manifold. Besides, I don't need to know it on a diesel because I don't have any plug wires to route like I would on a gasser.
shaun wallace
Well-known Member
If has rotary injection pump it cannot get out of time when pulling pump.
Sean in PA
Well-known Member
According to the parts site, most 6600's used the in-line pump. The US made 6600's did use the rotary pump, but only for the first two years of production. All of the European made 6600's used the in-line pump for all years.
Bern
Well-known Member
- Location
- Mount Vernon, WA
One could make a similar argument with the inline pump. If the engine is on the wrong stroke, you cannot physically install the pump drive bolts through the drive gear.
Sean in PA
Well-known Member
Is that a difference from the 3 cylinder in-line pumps? The drive gear bolts are symmetrical in the 3 cylinders.
Bern
Well-known Member
- Location
- Mount Vernon, WA
The 3-bolt pattern is symmetrical, as is the drive gear, and therein lies the problem. There are 3 cutouts
in the gear which are spaced 120 degrees apart, one of which is used to observe the timing marks on the
pump. If the engine is 360 off (180 pump), the gear obstructs the view of the marks. In addition, the slots
for the bolts don't line up either.
If it was 4 bolts and 4 slots, or 2 and 2, then a person could easily get the timing off 180. Safe to say it
was engineered with 3 slots on purpose.
in the gear which are spaced 120 degrees apart, one of which is used to observe the timing marks on the
pump. If the engine is 360 off (180 pump), the gear obstructs the view of the marks. In addition, the slots
for the bolts don't line up either.
If it was 4 bolts and 4 slots, or 2 and 2, then a person could easily get the timing off 180. Safe to say it
was engineered with 3 slots on purpose.
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