Search found 4078 matches

by ollek
Fri Dec 13, 2013 5:04 pm
Forum: DBTC Forum
Topic: 1394 cold start
Replies: 31
Views: 15723

RE: Re: RE: 1394 cold start

It is not fuel from the thermostart that is helping the starting of the engine, it is the heat from the burning fuel. Why cant you believe this. And furthermore, there is no air stream in the inlet channel when the fuel starts to burn and heats up the air in the inlet manifold. And where from do you...
by ollek
Fri Dec 13, 2013 12:19 pm
Forum: DBTC Forum
Topic: 1394 cold start
Replies: 31
Views: 15723

RE: Re: RE: 1394 cold start

Powerrabbit, do not argue. Read and learn if you do not know.
by ollek
Fri Dec 13, 2013 9:36 am
Forum: DBTC Forum
Topic: 1394 cold start
Replies: 31
Views: 15723

RE: Re: RE: 1394 cold start

Heating the coolant will also warm up the cylinder walls and the cylinder head, so that the temperature in the combustion chambers are slightly higher than without the block heater. This make the starting of the engine easier and reduces smoke from the cold engine. It also warms a part of the engine...
by ollek
Fri Dec 13, 2013 9:23 am
Forum: DBTC Forum
Topic: Date of tractor and say hello
Replies: 8
Views: 4615

RE: Date of tractor and say hello

I can not understand what you mean by "lift pump seal is worn around the shaft that goes from the pump into the engine". The lift pump is a diaphragm pump operated by the engines cam shaft by a plunger. Are you talking about the fuel injection pump, that sends high pressure fuel to the injectors?
by ollek
Fri Dec 13, 2013 7:57 am
Forum: DBTC Forum
Topic: 1394 cold start
Replies: 31
Views: 15723

RE: 1394 cold start

A thermostart unite does not inject heated fuel. The unite is heating up a spiral to be hot enough to ignite fuel when the valve is opened and fuel is let onto the red hot spiral. The heating effect comes from the open flame in the inlet manifold. A block heater is a simple electrical element that h...
by ollek
Thu Dec 12, 2013 6:16 pm
Forum: DBTC Forum
Topic: 1394 cold start
Replies: 31
Views: 15723

RE: 1394 cold start

One more thing. When the filters are removed, try to pump with the hand pump an see if you get fuel to the filter housing. Gelling in the tank and the suction line can prevent the fuel from getting to the filters. If it is really bad, you will have to empty the tanks and fill with fresh winter fuel....
by ollek
Thu Dec 12, 2013 6:12 pm
Forum: DBTC Forum
Topic: 1394 cold start
Replies: 31
Views: 15723

RE: 1394 cold start

Very mall amounts of summer fuel mixed in the winter fuel will result in gelling of the fuel. Changer the filters and try again. Does your tractor have thermostart? If it does, keep the pre heating on for at least 30 seconds before you try to start. Starting these engines without pre heating (thermo...
by ollek
Thu Dec 12, 2013 7:22 am
Forum: DBTC Forum
Topic: 1394 Removal of Reversible PTO Shaft
Replies: 7
Views: 5390

RE: 1394 Removal of Reversible PTO Shaft

Be aware that both shaft ends (6 spline and 21 spline) are case hardened. Machining the shafts will cut through the hard surface and make the splines soft. I can understand that some drive shafts have 20 splines, but you will not be able to machine the tractor shaft to fit these. If the drive shaft ...
by ollek
Thu Dec 12, 2013 7:13 am
Forum: DBTC Forum
Topic: Vent screw in ram cylinder sheared off - advice please!
Replies: 14
Views: 7433

RE: Job done

Looks grate, but there is one problem. You will not be able to get the air out from the cylinder without removing the screw and the ball. The original "screw" had a hole in the centre and the inner end of the screw had a groove across so that air and oil could escape around the ball and into the hol...
by ollek
Wed Dec 11, 2013 1:46 pm
Forum: DBTC Forum
Topic: 990 with AD4/47A engine - all 4 pistons seized
Replies: 48
Views: 28046

RE: 990 with AD4/47A engine

To clean the bore and the valve you can use very very fine emery paper soaked in oil, but be careful. Too much "cleaning" will damage the bore and the valve. Both valves has to have a snug fit in the bore, not too tight and not too loose. Do not scratch the bore or the valve, but polish the parts. R...
by ollek
Wed Dec 11, 2013 1:25 pm
Forum: DBTC Forum
Topic: 990 with AD4/47A engine - all 4 pistons seized
Replies: 48
Views: 28046

RE: 990 with AD4/47A engine

The small ball (diameter 1/16") is a non return valve for the tcu pressure and the plate with 3 small holes prevents the ball from flying up and getting stucked inside the dump valve. The system will lift, hold and lower without these parts, but you have no tcu pressure. TCU pressure is a constant p...
by ollek
Mon Dec 09, 2013 7:43 am
Forum: DBTC Forum
Topic: Adding a heater to my 1212
Replies: 10
Views: 7492

RE: Adding a heater to my 1212

The supply to the heater core is taken from the thermostat housing or the water pump. The return can be plumed into the drain cock. The swapping of supply and return hoses does not usually make a big difference in heating performance, but supply is usually at the bottom of the core and return at the...
by ollek
Sun Dec 08, 2013 2:19 pm
Forum: DBTC Forum
Topic: db996
Replies: 1
Views: 1591

RE: db996

Have a look in www.partstore.caseih.com. There you will find the parts catalogue with pictures for your tractor.
by ollek
Sun Dec 08, 2013 1:56 pm
Forum: DBTC Forum
Topic: 990 with AD4/47A engine - all 4 pistons seized
Replies: 48
Views: 28046

RE: 990 with AD4/47A engine

The valve you are talking about (the left one without a plug in the picture) is the hold valve. The dump valve is the thing with a knob that is sticking out of the rear axle. The oil that you are getting from the hold valve when the dump valve is removed, is coming from a 0,8 mm hole in the hold val...
by ollek
Sun Dec 08, 2013 6:25 am
Forum: DBTC Forum
Topic: New fella wants to learn a bit about his new old, 990 toy.
Replies: 6
Views: 4531

RE: New fella wants to learn a bit about his new old, 990 to

The lever on the left hand side is for locking the linkage in top position. Turning the lever left will open the lock and right will lock the linkage. The main control lever has two nuts on the shaft where the lever is turning. Tighting the nuts wuill stifen the lewer.