Search found 1994 matches

by db2d
Wed Apr 17, 2019 9:19 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 187

Re: Dynamo and regulator wiring

rid54. This is a seventy year old tractor with a gear driven CAV dynamo with engine governors attached. Without major modifications the fitting of alternative equipment is not a viable option.
by db2d
Wed Apr 17, 2019 4:49 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 187

Re: Dynamo and regulator wiring

I would be surprised if you can successfully charge a 12V battery with the 6V CAV dynamo on your tractor.
by db2d
Wed Apr 17, 2019 2:49 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 187

Re: Dynamo and regulator wiring

The dynamo will be six volt, there are twelve volt versions but these were only fitted to industrial tractors. The original regulators became obsolete sixty years ago. The regulator pictured is not a DB fitment. The regulator was replaced with one mounted on a plate on the fuel tank mounting positi...
by db2d
Wed Apr 17, 2019 10:49 am
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 187

Re: Dynamo and regulator wiring

As I have stated —there are three wires coming out of the dynamo- dynamo-field and earth. The regulator is someone’s adaption. 6V batteries are available but of dubious quality and quite expensive. The starter motor works better with a 12V battery making engine starting easier. This is a common feat...
by db2d
Wed Apr 17, 2019 6:47 am
Forum: DBTC Forum
Topic: Spun bearing on 990
Replies: 9
Views: 134

Re: Spun bearing on 990

Stamped in the cylinder block on the lower front corner below the dynamo.
The numbers you have supplied are casting numbers.
by db2d
Tue Apr 16, 2019 10:51 pm
Forum: DBTC Forum
Topic: Spun bearing on 990
Replies: 9
Views: 134

Re: Spun bearing on 990

Can you supply the engine number please so that the engine type can be identified
by db2d
Tue Apr 16, 2019 10:36 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 187

Re: Dynamo and regulator wiring

The voltage will be stamped on the dynamo casing. It is quite common to see these tractors using a 12V battery for starting with a 6V starter motor. This does not harm the starter in any way, in fact 6V starters were fitted on some DB tractors with 12V belt driven dynamos by the factory. The regulat...
by db2d
Mon Apr 15, 2019 11:36 pm
Forum: DBTC Forum
Topic: Dynamo and regulator wiring
Replies: 24
Views: 187

Re: Dynamo and regulator wiring

The dynamo will be six volt, there are twelve volt versions but these were only fitted to industrial tractors. The original regulators became obsolete sixty years ago. The regulator pictured is not a DB fitment. The regulator was replaced with one mounted on a plate on the fuel tank mounting positio...
by db2d
Sun Apr 14, 2019 6:58 pm
Forum: DBTC Forum
Topic: Cropmaster gauges
Replies: 8
Views: 133

Re: Cropmaster gauges

Instrumentation on the Cropmaster dashboard varied according to the age of the machine and the fuel used. If the tractor was not equipped with lights there would not be a hole for a switch and if electric starting was not present there would not be a hole for an ammeter. Oil pressure gauges replaced...
by db2d
Sat Apr 13, 2019 12:13 pm
Forum: DBTC Forum
Topic: Cropmaster gauges
Replies: 8
Views: 133

Re: Cropmaster gauges

Cropmasters were never fitted with fuel gauges. The oil pressure gauges did not have a black background.
by db2d
Sat Apr 13, 2019 11:15 am
Forum: DBTC Forum
Topic: Cropmaster gauges
Replies: 8
Views: 133

Re: Cropmaster gauges

As you say, ammeter , oil pressure and temperature. All available from davidbrownparts.com
by db2d
Fri Apr 12, 2019 1:29 am
Forum: DBTC Forum
Topic: 950 implematic exactor coupling
Replies: 12
Views: 236

Re: 950 implematic exactor coupling

The largest one is Exactor, the smaller one is Dowty.
by db2d
Thu Apr 11, 2019 10:33 pm
Forum: DBTC Forum
Topic: VAK1a bearing
Replies: 6
Views: 257

Re: VAK1a bearing

You should be able to cross match using the bearing numbers I have supplied.
by db2d
Sat Apr 06, 2019 10:27 pm
Forum: DBTC Forum
Topic: VAK1a bearing
Replies: 6
Views: 257

Re: VAK1a bearing

Bearing- David Brown part number 19053 — Roller R.LS. 13.R

19123. Alternative to 19053—— Roller Hoff. RU3L
A .020inch thick shim is required if this bearing is fitted .
by db2d
Wed Apr 03, 2019 6:58 pm
Forum: DBTC Forum
Topic: 885 light switch
Replies: 2
Views: 138

Re: 885 light switch

There is normally a small hole on the side of the knob through which a probe can be inserted to depress a spring loaded locking device.