Caddy Posted August 14, 2013 Share Posted August 14, 2013 G'day, Does anyone know where I can get a wiring diagram for a DLB No.1 Mk1 FV494570 including MOD mod 4, and if there is an EMER covering the electrical systems using this Distribution Link Box? I've got the set from andym, but they don't cover this, and we're having real trouble getting to grips with the electrical systems. Cheers Paul Quote Link to comment Share on other sites More sharing options...
fv1609 Posted August 14, 2013 Share Posted August 14, 2013 Paul I expect you have been looking in EMER TRACKED VEHICLES but Vehicle Electrical Systems, FV Pattern are covered in EMER POWER P. DLB No.1 Mk 1 is in EMER POWER P 160/3 - 169/3 Quote Link to comment Share on other sites More sharing options...
Caddy Posted August 14, 2013 Author Share Posted August 14, 2013 Thanks Clive, Do you know where I can get a copy of these? Pretty sure we don't have them. Is this something available from Bovington or maybe the REME museum? Cheers Paul Quote Link to comment Share on other sites More sharing options...
fv1609 Posted August 14, 2013 Share Posted August 14, 2013 Paul I have several of the same volumes of POWER P but none of them have this particular section. So these would have all come from workshops that didn't have to deal with this DLB unfortunately. PM coming up. Quote Link to comment Share on other sites More sharing options...
andym Posted August 14, 2013 Share Posted August 14, 2013 (edited) G'day, Does anyone know where I can get a wiring diagram for a DLB No.1 Mk1 FV494570 including MOD mod 4, and if there is an EMER covering the electrical systems using this Distribution Link Box? I've got the set from andym, but they don't cover this, and we're having real trouble getting to grips with the electrical systems. Cheers Paul I'm confused - are you sure you've got the full set of manuals? There's definitely a diagram in the relevant AESP. This is the official MOD redacted version: Andy Edited August 14, 2013 by andym Quote Link to comment Share on other sites More sharing options...
Caddy Posted August 15, 2013 Author Share Posted August 15, 2013 Andy, You're not the only one! I found that as well, but it is different to the one fitted in our 432. The FV numbers are the same, and it is marked up with No.1 Mk1, but there are differences in the wiring. This DL box is turning into Pandoras Box... Quote Link to comment Share on other sites More sharing options...
andym Posted August 15, 2013 Share Posted August 15, 2013 Interesting - differences in what respect? I can't remember what MOD state the one is that I've just fitted to the Abbot, but it's got a 2004 test date on it. Andy Quote Link to comment Share on other sites More sharing options...
Caddy Posted August 15, 2013 Author Share Posted August 15, 2013 Looking at it we think that someone in the past has re-wired it to take a Mk2 starter with a separate starter solenoid. Also other weird issues with the fuel solenoid...... Quote Link to comment Share on other sites More sharing options...
andym Posted August 15, 2013 Share Posted August 15, 2013 Sounds like someone has been fiddling! If you mean the later S152 starter they still have a built-in solenoid so the wiring should be unchanged. What's the problem with the fuel solenoid - someone not converting properly from the older two-wire type to the later three-wire with separate hold-on coil? Andy Quote Link to comment Share on other sites More sharing options...
sharky Posted August 15, 2013 Share Posted August 15, 2013 Looking at it we think that someone in the past has re-wired it to take a Mk2 starter with a separate starter solenoid. Also other weird issues with the fuel solenoid...... Whats the weird issue ? might be able to help. Quote Link to comment Share on other sites More sharing options...
Caddy Posted August 16, 2013 Author Share Posted August 16, 2013 The fuel solenoid was fiddled with by someone who didn't find out how it works. Also there's been a lot of damaged cables. The solenoid is back on and correctly set, electrically checked and all cabling checked, but it still won't work. Same with the fuel pump. Feed it with 24v and it has worked for over 30min non stop, but through the DLB nothing....... Quote Link to comment Share on other sites More sharing options...
andym Posted August 16, 2013 Share Posted August 16, 2013 Luckily it's a pretty simple thing to check through with a meter. What does the starter do, out of interest? And have you got the DLB1 to DLB2 link cable in place? That's caught me at least once! Andy Quote Link to comment Share on other sites More sharing options...
Caddy Posted September 3, 2013 Author Share Posted September 3, 2013 Okay, A little progress today. My friend has got the fuel solenoid to open and hold, the starter motor to spin and the fuel pump to pump. All this by feeding the relevant cables that connect through the DLB. When we try it through the DLB nuffink. So the DLB in fried. The one we have on at the moment is a DLB No1 Mk1 Mod6. We have got a No1 Mk1 Mod7 which seems to use the same connections in the same order, but we are still a little worried as to whether we can just use the Mod7 or not, or does there need to be some adaptions to the wiring harnesses? Any help would be most appreciated Quote Link to comment Share on other sites More sharing options...
andym Posted September 3, 2013 Share Posted September 3, 2013 (edited) As far as I'm aware all the DLBs that have the 25A starter circuit breaker fitted are interchangeable. The fitment of that breaker required modifying the FIP solenoid wiring on the power pack. As I suggested, have you checked that the DLB1 to DLB2 paralleling link is intact? All the circuits you mention pass through it - see attached. Andy Edited September 3, 2013 by andym Quote Link to comment Share on other sites More sharing options...
Caddy Posted September 3, 2013 Author Share Posted September 3, 2013 Andy, The Mod 6 doesn't have the 25amp breaker or the relay that sits on top of the TB's on the lid. Have you got any info on this modification? Cheers Paul Quote Link to comment Share on other sites More sharing options...
Caddy Posted September 3, 2013 Author Share Posted September 3, 2013 The link is in place and working, was on top of that from your previous post Quote Link to comment Share on other sites More sharing options...
andym Posted September 3, 2013 Share Posted September 3, 2013 Andy,The Mod 6 doesn't have the 25amp breaker or the relay that sits on top of the TB's on the lid. Have you got any info on this modification? Cheers Paul Ah - that may explain what's going on. I've never seen a DLB without the breaker, yours must be ancient! Here's the circuit diagram for the old version: How many wires does your FIP solenoid have - two or three? Andy Quote Link to comment Share on other sites More sharing options...
andym Posted September 3, 2013 Share Posted September 3, 2013 I've just taken a look at an old DLB I've got in the garage. That's Mod 6 and it has the breaker fitted! Andy Quote Link to comment Share on other sites More sharing options...
Caddy Posted September 3, 2013 Author Share Posted September 3, 2013 Ta, ancient, that's probably about right........ Quote Link to comment Share on other sites More sharing options...
andym Posted September 4, 2013 Share Posted September 4, 2013 I wonder if you've ended up with some sort of half-way house between the two versions of wiring. The easiest thing to investigate is the fuel pump as that doesn't go through the relay circuit. Provided you've got 24V on 12F from the engine switch and 24V also comes out of 2G, it should find its way via the paralleling link to 23A and the pump should run. Andy Quote Link to comment Share on other sites More sharing options...
Caddy Posted September 4, 2013 Author Share Posted September 4, 2013 Ah - that may explain what's going on. I've never seen a DLB without the breaker, yours must be ancient! Here's the circuit diagram for the old version: [ATTACH=CONFIG]81430[/ATTACH] How many wires does your FIP solenoid have - two or three? Andy 3: 1 common, 1 to pull, and 1 to hold in place. From what you've said it sound like the pack we've got has had the modification to run with the DLB No1 Mk1 Mod7. And somehow the DLB we have in the 432 is 'bodge'd' to work. If we swap for the DLB Mod7 we should be fine (hopefully). I wonder if you've ended up with some sort of half-way house between the two versions of wiring. The easiest thing to investigate is the fuel pump as that doesn't go through the relay circuit. Provided you've got 24V on 12F from the engine switch and 24V also comes out of 2G, it should find its way via the paralleling link to 23A and the pump should run. Andy There's no power coming out of the box to feed the FIP solenoid, the fuel pump, or the starter motor. Power is going in at the right connections, but it isn't coming out. Wonder if someone has fried it trying dick about with it. Quote Link to comment Share on other sites More sharing options...
andym Posted September 4, 2013 Share Posted September 4, 2013 I'm also wondering if your Mod 6 has been bodged. Any chance that someone took your breaker and relay out, knackering the DLB in the process? Here's a rather worse for wear DLB showing the starter relay in the lid, this is another Mod 6. It should be a pretty straight forward process to trace the fuel pump wiring through the DLB. Let me know how you get on! Andy Quote Link to comment Share on other sites More sharing options...
Caddy Posted September 4, 2013 Author Share Posted September 4, 2013 In our DLB it looks like the breaker and relay were never there in the first place; there's no hole in the side of the box for the breaker or any sign of the relay. Quote Link to comment Share on other sites More sharing options...
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