Search found 197 matches

by rid54
Sun Mar 22, 2020 8:00 am
Forum: DBTC Forum
Topic: Dead Clutch Pedal
Replies: 12
Views: 206

Re: Dead Clutch Pedal

The lever that sits on the cross-shaft looks to be clamped in position. Perhaps the joint has slipped, if the clamp has been loosened and the lever now sits in the depressed position while the cross-shaft is still in the normal position. that might be easily checked I suppose but needs hands-on, of ...
by rid54
Sat Mar 21, 2020 4:34 pm
Forum: DBTC Forum
Topic: Dead Clutch Pedal
Replies: 12
Views: 206

Re: Dead Clutch Pedal

In the video I think one can see the pedal moving, but the cross-shaft doesn't follow the movement. If there is a pin securing the lever to the cross-shaft, it may have been sheared or lost. That would be a simple problem to solve. However, no info is gained about the clutch mechanism - it may have ...
by rid54
Fri Mar 20, 2020 9:16 pm
Forum: DBTC Forum
Topic: Battery cable size (AWG)
Replies: 3
Views: 113

Re: Battery cable size (AWG)

Additional: The turning power of the starter is purely depending on current. Current is feed voltage divided with resistance in the current path. The resistance is found in cables and connectors, and internally in the battery (very low), and in the starter (very low at standstill or low speed). The ...
by rid54
Fri Mar 20, 2020 9:05 pm
Forum: DBTC Forum
Topic: Battery cable size (AWG)
Replies: 3
Views: 113

Re: Battery cable size (AWG)

The current demand of any starter is potentially enormous. In cold conditions, with a stiff engine, the draw may be upwards of 300 A at 12 V. The starter is practically a short of the battery if it has to struggle. The bigger size the better when it comes to cable cross-section (area). Use the bigge...
by rid54
Fri Feb 14, 2020 9:10 pm
Forum: DBTC Forum
Topic: piston rings and bearing shells
Replies: 14
Views: 734

Re: piston rings and bearing shells

I realise that replacing piston rings do not have anything to do with low oil pressure, but the thread owner mentioned it as a particular question. Honing the cylinders and attaching new piston rings will in many cases revive a tired engine. A wear ridge in the bore must be machined away, or special...
by rid54
Mon Feb 10, 2020 4:44 pm
Forum: DBTC Forum
Topic: piston rings and bearing shells
Replies: 14
Views: 734

Re: piston rings and bearing shells

You seem to have decided to measure oil pressure, very good practice, I'd say. A pressure switch can have bad precision.

Lots of things, besides the bearings, can affect oil pressure. Wear in the pump, leaking overflow valve etc.

New rings and honing the bores could be a good thing,
by rid54
Fri Jan 03, 2020 8:14 pm
Forum: DBTC Forum
Topic: 885 retard screw
Replies: 15
Views: 1006

Re: 885 retard screw

It might be useful to know whether the engine keeps running OK if you do not screw out the retard (blocking) screw, and that the erratic running is indeed a direct result of unclamping the auto-advance device. If so, there is a timing error at some point. If I understand correctly, the screw in ques...
by rid54
Fri Jan 03, 2020 11:27 am
Forum: DBTC Forum
Topic: Help if possible please.
Replies: 36
Views: 2074

Re: Help if possible please.

Re: Klippan (possibly off-topic):
https://www.maskinisten.net/viewtopic.php?t=8399
They made cabs, possibly even for David Brown. Pics a bit down the page, otherwise swedish text.
by rid54
Thu Jan 02, 2020 5:38 pm
Forum: DBTC Forum
Topic: Help if possible please.
Replies: 36
Views: 2074

Re: Help if possible please.

The cab, as can be viewed in the pics, have some similarities to the cab fitted to my 880; the profile of the roof, shape of the door frames and such. I think that the cab on my tractor is made by a company that branded their products "Klippan", and I think it is a safety cab (NOT sure about this). ...
by rid54
Wed Dec 18, 2019 8:57 pm
Forum: DBTC Forum
Topic: Case 990 selectamatic
Replies: 2
Views: 323

Re: Case 990 selectamatic

Instruments and warning lights shouldn't require more than 1-2 Ampères, probably significantly less when lights are all out. Edit: In this thread https://dbtc.co.uk/phpBB3/viewtopic.php?f=1&t=18437 you can find a link to a relevant document about the electric system: ( https://drive.google.com/drive...
by rid54
Tue Dec 17, 2019 8:05 pm
Forum: DBTC Forum
Topic: Merry Christmas
Replies: 8
Views: 636

Re: Merry Christmas

Best greetings to all from Sweden as well!
by rid54
Tue Dec 17, 2019 1:53 pm
Forum: DBTC Forum
Topic: Voltage Regulator / Dynamo
Replies: 16
Views: 1099

Re: Voltage Regulator / Dynamo

17 V is never a good voltage for a 12 V system - the regulator fails in some way. One of the terminals on the regulator must be the sensing input (to tell the regulator about the system voltage), are all connections there tight and secure, no loose joints or such? Is there a D- connector and a cable...
by rid54
Fri Dec 06, 2019 9:32 pm
Forum: DBTC Forum
Topic: 90 series temperature gauges
Replies: 12
Views: 748

Re: 90 series temperature gauges

Classic diesel engines go through a lot of (cold) air even at idle - there is no intake air metering. All this cold air cools the engine, and an idling diesel will probably not reach thermostat opening heat at all. As has been said, only at high power output the engine will heat up enough to make th...
by rid54
Wed Dec 04, 2019 9:32 pm
Forum: DBTC Forum
Topic: 30C Diesel Starter Motor
Replies: 7
Views: 491

Re: 30C Diesel Starter Motor

The "bendix" is the starter motor gear, and it is normally moved into position by the solenoid pulling the gear fork against a return spring. There is also (normally) a "freewheel" or one-way clutch, that allows the starter motor gear to move freely, when the engine starts, as to unload it, and allo...
by rid54
Fri Nov 22, 2019 9:42 am
Forum: DBTC Forum
Topic: 1494 overheating
Replies: 8
Views: 648

Re: 1494 overheating

There is no absolute connection beween overheating and a cracked head. The first things to check are fluid level and flow. Are hoses OK? Sludge in cooling jackets? Water pump actually pumping the water? If there is a crack in the cylinder head, there will be some gas leakage into the coolant, and th...