Search found 3806 matches

by ollek
Fri May 25, 2012 10:12 am
Forum: DBTC Forum
Topic: 990 implematic final drive axle shaft clearance
Replies: 3
Views: 2654

RE: 990 implematic final drive axle shaft clearance

The ring nut does not have anything to do with the bearing adjustments. The adjustment for the wheel axel bearings is made by shims between the housing and flange. Remove the bolts that holds the flange and remove all shims. Fit the bolts and tighten loosely evenly to get the same gap all around and...
by ollek
Mon May 21, 2012 3:54 pm
Forum: DBTC Forum
Topic: Ebay engine block
Replies: 18
Views: 9292

The main bearing caps are machined separately for each engine and the caps are not interchangable. The line boring is only one issue, the other one is the machining of the seat for the thrust bearings. Using caps from a other engine will result in the face on the upper and lower half being out ot li...
by ollek
Sat May 19, 2012 7:45 am
Forum: DBTC Forum
Topic: hydraulics
Replies: 5
Views: 4171

RE: hydraulics

Have You adjusted the lowering speed to maximum with the lowering control and have You tried the use the dump valve?
by ollek
Sat May 19, 2012 7:41 am
Forum: DBTC Forum
Replies: 3
Views: 2053


The filter has to stand up to the maximum hydraulic pressure as it is in the main supply line from the pump. This is the reason for the high price. A normal filter will collaps in pressures of more than 170 bar.
by ollek
Fri May 18, 2012 3:14 pm
Forum: DBTC Forum
Topic: No cabs...
Replies: 9
Views: 4795

RE: No cabs...

The answer is "simple". In the old days all implements fitted to a tractors 3-point hitch had levers and handels for the driver to operate. All this stuff had to be near enougt to the driver and a cab was in the way. Later on farmers wanted to have a roof on there head and then some walls as well. T...
by ollek
Thu May 03, 2012 10:32 am
Forum: DBTC Forum
Topic: David brown 990 running problems only run bleed screw out
Replies: 8
Views: 4684

Disconnect the return pipe from the pump and try to run the engine. I know it is a messy job with fuel sparaying all ower. If You are absolutly sure all the return pipes are clear, You may have a blockage in the pipe union at the pump.
by ollek
Thu May 03, 2012 10:26 am
Forum: DBTC Forum
Topic: RE: Identify loader
Replies: 4
Views: 2756

RE: Identify loader

DB loaders numberd 12 will fit 1210 and 1212 tractors. Loaders numbered 9 will fit 990, 995 and 996 tractors. You can not fit a 12-series loader to a 9-series tractor or vise versa.
by ollek
Mon Apr 30, 2012 4:42 pm
Forum: DBTC Forum
Topic: Kontak valves on DB Loaders
Replies: 1
Views: 1813

RE: Kontak valves on DB Loaders

Leaks between valve slices are cured with new O-rings. Leaks between spool and bore can not be repaired, You will have to fit a new valve slice. However, there is always a very small leak between a spool and the bore resulting in slow lowering of the loader or the bucket. For this reason more expens...
by ollek
Sun Apr 29, 2012 3:57 pm
Forum: DBTC Forum
Topic: dump valve makes no difference
Replies: 20
Views: 14140

The valve in the lower picture is the by-pass valve, involved in lifting the 3-point hitch and letting the pump flow to the transmission lubrication when the hitch is not lifting. The valve in the picture has a pin going through the a small disk sitting under a plug and this arrangement was used to ...
by ollek
Sun Apr 29, 2012 8:32 am
Forum: DBTC Forum
Topic: 12 or 24 volt ????
Replies: 12
Views: 7949

ada5583, You have connected the two batteries in series, getting 24 volt supply. This can ruin bulbs, alöternator and starter motor. Please connect in parallell, positive to positive and negativ to negative terminals. You will need some new cables and connectors to meke this work.
by ollek
Sat Apr 28, 2012 2:04 pm
Forum: DBTC Forum
Topic: Fuel myths
Replies: 29
Views: 12771

Adding oil to diesel fuel is something we have been doing in Finland for decades. The main reason is, that the arctic fuel grade (will work in temperatures well below -40 degrees C without clogging up filters) is "dry". We use 2-troke oil, not engine oil and the reason is, that 2-stroke oil do not p...
by ollek
Wed Apr 25, 2012 11:39 am
Forum: DBTC Forum
Topic: 1212
Replies: 1
Views: 1460

RE: 1212

Easy job. Take the supply from Your 3-way valve using port nr 2. Port nr 1 is usually used for tipping the trailer but there is a plug blancing off port 2. Route the return line to the transmission lubrication port. The port is a plug on the front left hand side on the block sitting at the top of th...
by ollek
Sat Apr 21, 2012 5:30 pm
Forum: DBTC Forum
Topic: Jerky front loader
Replies: 2
Views: 1634

RE: Jerky front loader

How about the 3-point hitch, is it jerky as well during the first 20 minutes?
by ollek
Tue Apr 17, 2012 11:21 am
Forum: DBTC Forum
Topic: increasing hydraulic output
Replies: 6
Views: 4559

RE: increasing hydraulic output

You will need the combining valve. This is because the Selectamatic valve can not take the full flow from both pumps without heating up the oil and creating malefunctions in the 3-point hitch. Combining the two pump flows will stop the flow to the Selectamatic valve and direct the flow only to the e...
by ollek
Sun Apr 15, 2012 2:31 pm
Forum: DBTC Forum
Topic: 880 selectamatic rear axle bearings
Replies: 17
Views: 8889

Here is a simple way to assemble the diff lock. When You have removed the diff lock sleeve and the spring, press the spring down to less than a half of its lengt in a vise and fit paper yarn in 3 positions to keep the spring at that length. Then put he spring in position followed by the sleeve and g...