ianevans Posted November 26, 2015 Share Posted November 26, 2015 Hi , Looking for some ideas . Abbot wont start , tried to turn over once then nothing . not even clonk from starter motor solenoid. took engine services plug out and dont get 24v for starter . tried new cable same . DLB start solenoid pulls in when starter button is on . Any suggestions ?? thanks Ian Quote Link to comment Share on other sites More sharing options...
Tony B Posted November 26, 2015 Share Posted November 26, 2015 First check earth straps. The Gremlin hit point Mk1. Quote Link to comment Share on other sites More sharing options...
andym Posted November 26, 2015 Share Posted November 26, 2015 Do you get 24V on pin 21A of the DLB, when the starter switch is pressed? My guess would be dirty or worn contacts on the starter relay inside the DLB, it's pretty agricultural with contacts open to the air. (I know the diagram says not FV433, but there really isn't any difference!) Andy Quote Link to comment Share on other sites More sharing options...
Dougy FV432 Posted November 26, 2015 Share Posted November 26, 2015 Was just looking at the wiring diagram in the online electrical manual on the fv430 website, and noticed that the fv433 and fv434 do seem different, their gearchange inhibiter switch is located after the DLB and before the PPJ. Dougy Quote Link to comment Share on other sites More sharing options...
sharky Posted November 26, 2015 Share Posted November 26, 2015 Check cable from gear selector they chafe thru. Also check micro switches in gear selector had that problem before aswell Quote Link to comment Share on other sites More sharing options...
andym Posted November 26, 2015 Share Posted November 26, 2015 If the starter relay is pulling in, it can't be the inhibitor at fault! Andy Sent from my SM-T310 using Tapatalk Quote Link to comment Share on other sites More sharing options...
sharky Posted November 26, 2015 Share Posted November 26, 2015 If the starter relay is pulling in, it can't be the inhibitor at fault! Andy Sent from my SM-T310 using Tapatalk Fair point Andy Quote Link to comment Share on other sites More sharing options...
andym Posted November 26, 2015 Share Posted November 26, 2015 This is what the relay looks like, sitting inside the lid of the DLB so fairly easy to get at: Andy Quote Link to comment Share on other sites More sharing options...
Topdog Posted November 27, 2015 Share Posted November 27, 2015 Nice picture Andy. That makes it easy to follow................... How do they manage to put so much spaghetti in 1 box? Quote Link to comment Share on other sites More sharing options...
andym Posted November 27, 2015 Share Posted November 27, 2015 Nice picture Andy. That makes it easy to follow...................How do they manage to put so much spaghetti in 1 box? Practice, I suspect! :-) The starter relay is actually an afterthought/modification. When they swapped from the old axial starter motor to the later S152 coaxial motor, the starter switch on the driver's switchboard wasn't up to the job so they had to add a relay (and 25A breaker) in the DLB. Andy Quote Link to comment Share on other sites More sharing options...
ianevans Posted November 27, 2015 Author Share Posted November 27, 2015 Hi All , Many thanks for all your help and advice , have cleaned DLB solenoid contacts and am getting 24v at the engine services cable at pin A on a test bulb, right at the pack marriage panel. sadly still nothing so am resigned to pull the pack and take starter off and either replace or repair. Thanks Ian Quote Link to comment Share on other sites More sharing options...
Dougy FV432 Posted November 27, 2015 Share Posted November 27, 2015 I would still check the gearchange inhibiter switch before pulling the pack. Just because you have 24v at the engine junction box doesn't mean the amps are getting through. I would also say that when you operate the start switch the "additional" relay as Andy has mentioned, but would operate as it is before the inhibiter, and would complete its circuit. If you look at diagram, the relay is a poor addition by hand (centre of pic by TB3) and an asterix marks where the inhibiter is located in the circuit. Dougy Quote Link to comment Share on other sites More sharing options...
ianevans Posted November 27, 2015 Author Share Posted November 27, 2015 Thanks , on this Abbot the inhibitor switch was taken off years ago before i got it and the wires joined , the join appears ok but i will check it before i pull the pack , should there be 24v at that join ?. cheers Ian Quote Link to comment Share on other sites More sharing options...
andym Posted November 27, 2015 Share Posted November 27, 2015 Yes, there should be 24V at that point. Have you checked if there's 24V on terminal A in the engine junction box on the pack? Andy Sent from my SM-T310 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Dougy FV432 Posted November 27, 2015 Share Posted November 27, 2015 It could be frowned upon, but I suppose the simplest way to tell if it is a pack side problem is to put a good known 24v source to A on the engine junction and the starter should operate, but only do if your confident, deliberate and have taken precautions if it should try to start, lots could go wrong! Dougy Quote Link to comment Share on other sites More sharing options...
andym Posted November 27, 2015 Share Posted November 27, 2015 I was thinking something very similar myself, Dougy! I see what you mean about the position of the inhibitor switch, I hadn't realised that. I wonder why they did it that way? Andu Sent from my SM-T310 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Dougy FV432 Posted November 28, 2015 Share Posted November 28, 2015 I see what you mean about the position of the inhibitor switch, I hadn't realised that. I wonder why they did it that way? Andy I was speaking to David H about it last night, he suggested that it could be because the fv433 and fv434 have additional start switches. The only flaw is, do Abbots have a second switch? Dougy Quote Link to comment Share on other sites More sharing options...
andym Posted November 28, 2015 Share Posted November 28, 2015 I was speaking to David H about it last night, he suggested that it could be because the fv433 and fv434 have additional start switches. The only flaw is, do Abbots have a second switch? Dougy Excellent piece of deduction! Yes, Abbots do have a second driver's switchboard, seen here (unplugged) on the front fighting compartment wall at the edge of the unpainted piece of Trakmark beside the fire warning light. Andy Quote Link to comment Share on other sites More sharing options...
ianevans Posted November 29, 2015 Author Share Posted November 29, 2015 I have 24v at the gear lever wires when i try the start toggle,as the engine junction box is below the fans and impossible to get to in situ i have decided to pull the pack ,it needs the mud cleaned out from the hull anyway and i might find and cure the small hydraulic leak at the same time . will keep you posted as to what the problem is . Thanks for your help Cheers Ian Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.