Search found 167 matches

by rid54
Wed May 08, 2019 8:23 pm
Forum: DBTC Forum
Topic: How to loosen this bolt witout breaking the lifting arm
Replies: 12
Views: 356

Re: How to loosen this bolt witout breaking the lifting arm

I suppose there are people here who know exactly what the material is in the "arm", but I'd guess it is forged, not just a cast. Heating it for the purpose of loosing the bolt shouldn't harm it really, not unless you're aiming at red hot heat. The idea with heating things, is to loosen the bond crea...
by rid54
Sun May 05, 2019 4:13 pm
Forum: DBTC Forum
Topic: DB 1200
Replies: 14
Views: 486

Re: DB 1200

Inline pump or distributor-type pump? First step is to ascertain that the lift pump pumps enough fuel while cranking the engine, then bleed filters and injection pump. Is there no fuel coming out even from the injection pump delivery holes? (except for #4)
by rid54
Fri Apr 26, 2019 5:11 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

I really don't know, but a 6 to 12 V inverter, capable of handling something like 30 A sounds like an expensive item. And, as was suggested by Gard, not totally reliable in the setup (if the thought was to convert dynamo output to 12 V). A really good 6 V battery shouldn't be more expensive, I'd gue...
by rid54
Fri Apr 26, 2019 8:35 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

I would suggest keeping the 6 V system, now that you have got the dynamo working. The only drawback is (possibly) a battery that is overpriced, but a quality unit should last several years if kept fully charged. Of course, 6 V systems require state-of-the art wiring and connections of the main circu...
by rid54
Thu Apr 18, 2019 11:01 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

...But the main thing is it shows the connections between dynamo and regulator and I can now dismantle mine to compare. My dynamo definately has 3 wires exiting, but that diagram shows 2 plus a small wire ending in an arrow - does this mean to earth? It appears to be inside the dynamo on the drawin...
by rid54
Wed Apr 17, 2019 9:26 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

I think your ideas are all sound. What you need to do is to find the proper relationship between the connections from the dynamo itself and the regulator. It may indeed be worth while to take the unit off of the tractor and examine it thoroughly, or take it to an electrician with the required knowle...
by rid54
Wed Apr 17, 2019 8:31 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

A reflection on dynamo working principles: The output of a dynamo of the type used in vehicles comes from the armature, the rotating part. It is taken out via the commutator segments and the brushes, one of which is connected to chassis (+ or -) and the other to the system. What actually comes out f...
by rid54
Wed Apr 17, 2019 11:35 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

That type of dynamo cannot function in any normal system, without a regulator. It is probable, that the original setup incuded an external regulator (which is a common solution) and something happened later that caused a re-build. The wiring diagram is not very comprehensive. I still think that the ...
by rid54
Wed Apr 17, 2019 6:43 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

If the wiring diagrams show just one connection from the dynamo, it could be that the symbol for the dynamo sort of "includes" the regulator; as in you rpic it is possible to interpret the dynamo+regulator as one component. Or does the regulator swhow up as well in the diagrams?
by rid54
Tue Apr 16, 2019 8:12 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

A 6 V starter will work with 12 V supply, but it may suffer over time, because it is overloaded. With a magneto ignition, the battery will serve several start attempts before it is depleted, even if there is no charging, because there is no drain unless the lights etc are in use. Dynamos (meaning DC...
by rid54
Mon Apr 15, 2019 9:25 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 32
Views: 725

Re: Dynamo and regulator wiring

The safest way is of course to get familiar with the wiring diagrams and see what needs to be put in place/renewed/removed etc. Assuming the generator is suited for a 12V, negative earth setup, the original schematics should be useful. Generally speaking, generators have voltage control (to keep sys...
by rid54
Sat Apr 13, 2019 8:40 pm
Forum: DBTC Forum
Topic: Sparks
Replies: 5
Views: 222

Re: Sparks

Very generally speaking here, no specific knowledge of your specific tractor... Diesel engines need good compression to create the heat needed to ignite the fuel, when starting them from cold. They also need proper fuel delivery. Bad starters need compression check and fuel delivery check. The latte...
by rid54
Mon Apr 08, 2019 6:30 am
Forum: DBTC Forum
Topic: Coolant
Replies: 9
Views: 405

Re: Coolant

I think that the mixture ratio is supposed to be 50%, because the coolant (glycol) also contains corrosion inhibitors, and the 50/50 mixture strength provides good overall corrosion protection as well as very good antifreeze properties - even if you don't actually need the antifreeze in your climate.
by rid54
Mon Apr 01, 2019 9:53 pm
Forum: DBTC Forum
Topic: 995 gauge upgrade issues
Replies: 9
Views: 392

Re: 995 gauge upgrade issues

To me it looks like there is a center spade connector for instrument illumination and two screw-on connections for + and sender. Earth (-) will be through mounting in a metal dashboard or by separate connection to one of the mounting screws.
by rid54
Sun Mar 03, 2019 7:40 am
Forum: DBTC Forum
Topic: 880 Selectamatic poor starting
Replies: 6
Views: 380

Re: 880 Selectamatic poor starting

The hand lever acts on the lift pump using other parts than the movement caused by the camshaft (as when the engine is spinning). The engine manual mentions that the lift pump is actuated by a push rod that is moved by an eccentric that is part of the camshaft. If this pushrod is worn short, the lif...