Dozerman 1 #1 Posted October 23, 2017 Hello I have 1974 d200 just bought it and it won't charge any info would be greatly appreciated Share this post Link to post Share on other sites
953 nut 51,661 #2 Posted October 23, 2017 With any electrical problem the first step is to clean and tighten ALL connections. The wiring diagram in this manual should help. 1 Share this post Link to post Share on other sites
Dozerman 1 #3 Posted October 23, 2017 Thank you I'll see what I can do you have been a big help thank you for the manual 1 Share this post Link to post Share on other sites
KC9KAS 4,741 #4 Posted October 23, 2017 @Dozerman to 1 Share this post Link to post Share on other sites
pfrederi 17,147 #6 Posted October 23, 2017 Check the AC voltage on the two white wires going to the regulator. Should be over 30 volts running. Getting to teh regulator on a D series is real fun...They are the most difficult to work on of any horses. 1 Share this post Link to post Share on other sites
Sarge 3,462 #7 Posted October 23, 2017 Just to add to that - the aluminum body of that voltage regulator must be grounded to the system to work correctly and is generally the culprit if they don't want to charge the battery . Remove the regulator noting the location of the wires , clean the bolt hole areas and it's a good idea to use a ground wire back to the battery and the engine block - the system will be a lot more consistent and stable . When re-installing the bolts I like to use internal tooth lock washer (stainless is best) to help keep the connection clean and tight - some dielectric grease helps as well . Sarge 3 Share this post Link to post Share on other sites