Vapormatic gasket kits and other problems

[DrDunc]

I have found the reason why you @John 1594 have had so much trouble with vapormatic gaskets.. . .. ..


The company is a wholly owned subsidiary of John Deere

 

[John 1594]

well.....had sump off this morning, oil pump off and on the bench to compare with the old one

the relief valve on the old pump simply dropped out on the bench when the securing pin and spring was removed

no such luck with the new one, banged it on the bench a few times, it eventually came out after a couple of attemts with the pliers, it seems to slide free in one position, but half a turn and you can feel it bind at the very bottom of its bore

so, old pump fitted to the engine, sump on and a pressure gauge on the oil gallery, 55psi on cold idle, rising to no more than 62-63 at full revs

obviously the tolerances of this new pump are a bit on the tight side, my guess is when the oil gets hot the expansion between the metal valve and the cast body is enough to nip it in its bore

on start up a peculiar knock has came up, ran fine yesterday, isolated it to no1 injector, when cracked off the knock went, moved it to number 2, same thing. So thats got to be sorted as well now

 

[Ley253]

The knock moved with the injector? Bit of dirt got in when the pipes were off, or internal scale was disturbed. This forms on the inside of injector pipes and can flake off if the pipes are bent when injectors are removed. These pipes should be removed completely, never at one end only, and bent out of the way.

 

[John 1594]

The knock moved with the injector? Bit of dirt got in when the pipes were off, or internal scale was disturbed. This forms on the inside of injector pipes and can flake off if the pipes are bent when injectors are removed. These pipes should be removed completely, never at one end only, and bent out of the way.

figuiring the injector is shot, so whipped the top cap off while it was running and incresed the spring pressure, the knock changes and will go when the spring is screwed tighter, id say its got a bad seat on the needle, have had similar before,

off to supplier in the morning to see what he is going to do about this faulty oil pump, and get a set of injectors while im at it

never had an issues with not completely removing injector pipes before, often they have a bit of spring in them and move away from the injector when they are slackened anyway

give me a direct injection DB engine over these poxy indirect injection things anyday, lot easier to work on by far

 

[Ley253]

bad seat yes, but that doesnt just happen so suddenly, I am certain a bit of crud is under the needle. Still a good diesel shop can regrind the needle and seat, or provide a new nozzle complete. I had all the injectors tested and reset and one new nozzle all for under twenty pounds. If you like, you could fit a head and pistons from a 3ad 152, they are direct injection!
Just as well D B engines are easy to work on, early ones too few head studs so head gaskets were a constant trouble.

 

[John 1594]

bad seat yes, but that doesnt just happen so suddenly, I am certain a bit of crud is under the needle. Still a good diesel shop can regrind the needle and seat, or provide a new nozzle complete. I had all the injectors tested and reset and one new nozzle all for under twenty pounds. If you like, you could fit a head and pistons from a 3ad 152, they are direct injection!
Just as well D B engines are easy to work on, early ones too few head studs so head gaskets were a constant trouble.

ive been wondering about this direct injection conversion, are the pistons the same, ie flat top? It would work, but you would need to bend the injector pipes as the direct head has angled injectors does it not?

it would transform the starting charecteristics im sure. She fired up first time this morning on a hard frost with 15 seconds of heat, the MF heater plug works quicker than the dexta one what says "press for 40 seconds"

the early DBs up to the 950 had less studs, i built a 990 engine out of a combination of a 1210, 1390 and 1494 bits and it runs beautifully

 

[Ley253]

Pistons are Bowl in piston type, and injector lines would probably be best made to suit,not sure about the inj pump I cant see any reason why it should be a problem, but did get bitten by a Peugeot 1.9 xud engine where the owner had fitted a Bosch pump in place of a failed rotodiesel type, of which he failed to inform me. took ages to find the problem and itwas cured by accident really,I had decided to change the injectors and owner supplied the rotodiesl ones from his spares car. Problem solved!

 

[John 1594]

Pistons are Bowl in piston type, and injector lines would probably be best made to suit,not sure about the inj pump I cant see any reason why it should be a problem, but did get bitten by a Peugeot 1.9 xud engine where the owner had fitted a Bosch pump in place of a failed rotodiesel type, of which he failed to inform me. took ages to find the problem and itwas cured by accident really,I had decided to change the injectors and owner supplied the rotodiesl ones from his spares car. Problem solved!

its an idea if i ever buy a dexta, dont think a complete engine swap with an AD series is possible, think the main bearings/rear seal are larger and interfere with the dexta sump, but 135 pistons in a suitably bored out dexta block, with a direct head linked to the inline pump, basically you have a 3 cyl fordson major engine?

 

[Ley253]

Early AD3 may be ok, still has the rope seals( even if they are moulded plastic, poss ptfe) About 45 hp, so a bit below the major. The one in my leyland is doing well pulls the plough with no trouble, and will dig holes rather than stall. The downside was it managed to bend the plough while digging said holes!

 

[John 1594]

Early AD3 may be ok, still has the rope seals( even if they are moulded plastic, poss ptfe) About 45 hp, so a bit below the major. The one in my leyland is doing well pulls the plough with no trouble, and will dig holes rather than stall. The downside was it managed to bend the plough while digging said holes!

hope you dont own a Kverneland

 

[Ley253]

Errr I do! it now has two replacement legs and one replacement frog. Legs and frog modified to provide pitch adjusment, and also a method of lifting either leg as required for the start and finish, Holes in frog altered to fit mouldboard( super hydrein. Thank god for the plasma cutter!) All I need now is some dry weather so I can go out and try the thing out

 

[John 1594]

Errr I do! it now has two replacement legs and one replacement frog. Legs and frog modified to provide pitch adjusment, and also a method of lifting either leg as required for the start and finish, Holes in frog altered to fit mouldboard( super hydrein thank god for the plasma cutter) All I need now is some dry weather so I can go out and try the thing out

bit different to my rather un-beloved LD 85/160 4f rev, was told not to buy it but i did, then i see sense and bought a dowdeswell

toying with the idea of getting a 3f DB CM type plough for the 990, she had the power to pull 4f with the uprated engine, but wether she could lift it is another question

 

[Ley253]

Local farmer had a kv reversable, dont know the type but they pulled the headstock out of it in the first year! I welded it all back together, and they did it again! My welds were still there though, the metal tore away half an inch or so from them. Its gone now it was costing too much to replace all the bits which kept bending or dropping off!

 

[John 1594]

Local farmer had a kv reversable, dont know the type but they pulled the headstock out of it in the first year! I welded it all back together, and they did it again! My welds were still there though, the metal tore away half an inch or so from them. Its gone now it was costing too much to replace all the bits which kept bending or dropping off!

sounds about right for a KV reversible, i pulled the headstock off mine, sheared the 4 bolts holding it on

it got a 1 way ticket to cheffins as soon as i was finsihed with it