Troubleshooting alternators

From Crankshaft Coalition Wiki
Jump to: navigation, search
(→Diagrams)
 
Line 43: Line 43:
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''12'''</span></font></p>
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''12'''</span></font></p>
 
             </td>
 
             </td>
−
             <td width="59">
+
             <lvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''8'''</span></font></p>
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''10'''</span></font></p>
+
−
            </td>
+
−
            <td width="59">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''10'''</span></font></p>
+
 
             </td>
 
             </td>
 
             <td width="68">  
 
             <td width="68">  
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''10'''</span></font></p>
 
−
            </td>
 
−
            <td width="66">
 
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''8'''</span></font></p>
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''8'''</span></font></p>
 
             </td>
 
             </td>
−
             <td width="68">
+
             <nter" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''10'''</span></font></p>
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''8'''</span></font></p>
+
−
            </td>
+
−
            <td width="80">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''8'''</span></font></p>
+
−
            </td>
+
−
          </tr>
+
−
          <tr>
+
−
            <td bgcolor="#FFF8DC" align="center" width="68">
+
−
              <p><font face="Arial, Helvetica, sans-serif" size="2"><b><span style="font-size:10pt">50-65</span></b></font></p>
+
−
            </td>
+
−
            <td width="64">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''10'''</span></font></p>
+
 
             </td>
 
             </td>
 
             <td width="60">  
 
             <td width="60">  
Line 93: Line 74:
 
           </tr>
 
           </tr>
 
           <tr>  
 
           <tr>  
−
             <td bgcolor="#FFF8DC" align="center" width="68">
+
             < face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''8'''</span></font></p>
−
              <p><font face="Arial, Helvetica, sans-serif" size="2"><b><span style="font-size:10pt">65-85</span></b></font></p>
+
−
            </td>
+
−
            <td width="64">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''10'''</span></font></p>
+
−
            </td>
+
−
            <td width="60">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''8'''</span></font></p>
+
 
             </td>
 
             </td>
 
             <td width="59">  
 
             <td width="59">  
Line 150: Line 124:
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''2'''</span></font></p>
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''2'''</span></font></p>
 
             </td>
 
             </td>
−
           </tr>
+
           </
−
          <tr>
+
−
            <td bgcolor="#FFF8DC" align="center" width="68">
+
−
              <p><font face="Arial, Helvetica, sans-serif" size="2"><b><span style="font-size:10pt">105-125</span></b></font></p>
+
−
            </td>
+
−
            <td width="64">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''6'''</span></font></p>
+
−
            </td>
+
−
            <td width="60">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''6'''</span></font></p>
+
−
            </td>
+
 
             <td width="59">  
 
             <td width="59">  
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''4'''</span></font></p>
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''4'''</span></font></p>
Line 169: Line 133:
 
             <td width="68">  
 
             <td width="68">  
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''2'''</span></font></p>
 
               <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''2'''</span></font></p>
−
             </td>
+
             </td>             <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''2'''</span></font></p>
−
            <td width="66">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''2'''</span></font></p>
+
 
             </td>
 
             </td>
 
             <td width="68">  
 
             <td width="68">  
Line 253: Line 215:
 
             </td>
 
             </td>
 
             <td width="59">  
 
             <td width="59">  
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''2'''</span></font></p>
+
         
−
            </td>
+
−
            <td width="68">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''0'''</span></font></p>
+
−
            </td>
+
−
            <td width="66">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''0'''</span></font></p>
+
−
            </td>
+
−
            <td width="68">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''0'''</span>
+
−
                </font></p>
+
−
            </td>
+
−
            <td width="80">
+
−
              <p style="text-align:center" align="center"><font face="Arial, Helvetica, sans-serif " size="2"><span style="font-size:8.5pt">'''00'''</span></font></p>
+
−
</td></tr></table><br>
+
−
 
+
−
==Pulley ratio==
+
 
The pulley ratio is the diameter of the crankshaft pulley divided by the diameter of the alternator pulley.
 
The pulley ratio is the diameter of the crankshaft pulley divided by the diameter of the alternator pulley.
 
*a 6" crankshaft pulley and a 2" alternator pulley equals a pulley ratio of '''3:1'''
 
*a 6" crankshaft pulley and a 2" alternator pulley equals a pulley ratio of '''3:1'''
Line 277: Line 223:
  
 
The general rule of thumb is the alternator ratio should be about 3:1 for the best all around performance. However, in cases where the engine will see high RPM, the alternator (as well as other belt/engine driven accessories) might need to be driven at a reduced ratio by using a larger diameter accessory pulley (or a smaller diameter crankshaft pulley) to lower the peak RPM. This ratio reduction needs to be balanced between low and high engine rpm operation if the vehicle will be used on the street.
 
The general rule of thumb is the alternator ratio should be about 3:1 for the best all around performance. However, in cases where the engine will see high RPM, the alternator (as well as other belt/engine driven accessories) might need to be driven at a reduced ratio by using a larger diameter accessory pulley (or a smaller diameter crankshaft pulley) to lower the peak RPM. This ratio reduction needs to be balanced between low and high engine rpm operation if the vehicle will be used on the street.
−
[[File:Deep groove alt pulley.jpg|border|right]]
+
"font-size: medium;">7.0"</span></strong></td>
−
If using a V-belt to drive the alternator, the belt depth can be increased to help prevent the belt from being thrown off at high RPM. One such pulley combines a larger diameter with a deeper groove (right).
+
−
<br style="clear:both"/>
+
−
 
+
−
===Pulley ratio chart===
+
−
<table valign="MIDDLE" align="center" border="1" cellpadding="2" cellspacing="0" ><tr height="33">
+
−
<td  bgcolor="#CCCCFF" style="TEXT-ALIGN: center" rowspan="2" height="66" width="71"><strong><span style="font-size:medium;">Alternator Pulley Diameter</span></strong></td>
+
−
<td  bgcolor="#FFF8DC" style="TEXT-ALIGN: center" colspan="11"><span style="font-size: medium;"><strong><span style="font-size:medium;">'''Crankshaft Pulley Diameter'''</span></strong></span></td>
+
−
</tr>
+
−
<tr bgcolor="#eeeeee" height="33">
+
−
<td style="TEXT-ALIGN: center" height="33"><strong><span style="font-size:medium;">5.0"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><strong><span style="font-size:medium;">5.25"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">5.5"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">5.75"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">6.0"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">6.25"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">6.5"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">6.75"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">7.0"</span></strong></td>
+
 
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">7.5"</span></strong></td>
 
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">7.5"</span></strong></td>
 
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">8.0"</span></strong></td>
 
<td style="TEXT-ALIGN: center"><strong><span style="font-size: medium;">8.0"</span></strong></td>
Line 303: Line 231:
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.63</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.63</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.76</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.76</span></td>
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.89</span></td>
+
<t3"><strong><span style="font-size: medium;">2.2"</span></strong></td>
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.03</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.16</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.29</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.42</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.55</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.68</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.95</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">4.21</span></td>
+
−
</tr>
+
−
<tr height="33">
+
−
<td bgcolor="#eeeeee" style="TEXT-ALIGN: center" height="33"><strong><span style="font-size: medium;">2.0"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.50</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.63</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.75</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.88</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.00</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.13</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.25</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.38</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.50</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">3.75</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">4.00</span></td>
+
−
</tr>
+
−
<tr height="33">
+
−
<td bgcolor="#eeeeee" style="TEXT-ALIGN: center" height="33"><strong><span style="font-size: medium;">2.2"</span></strong></td>
+
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.27</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.27</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.39</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.39</span></td>
Line 346: Line 249:
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.19</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.19</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.29</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.29</span></td>
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.40</span></td>
+
/td>
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.50</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.60</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.71</span></td>
+
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.81</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.81</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.92</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.92</span></td>
Line 397: Line 297:
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.67</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">2.67</span></td>
 
</tr>
 
</tr>
−
<tr height="33">
+
<t center"><span style="font-size: small;">1.54</span></td>
−
<td bgcolor="#eeeeee" style="TEXT-ALIGN: center" height="33"><strong><span style="font-size: medium;">3.25"</span></strong></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.54</span></td>
+
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.62</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.62</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.69</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.69</span></td>
Line 432: Line 330:
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.44</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.44</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.50</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.50</span></td>
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.56</span></td>
+
<tcenter"><span style="font-size: small;">1.69</span></td>
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.63</span></td>
+
−
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.69</span></td>
+
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.75</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.75</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.88</span></td>
 
<td style="TEXT-ALIGN: center"><span style="font-size: small;">1.88</span></td>
Line 447: Line 343:
 
[[Media:DR-12SI.pdf]]
 
[[Media:DR-12SI.pdf]]
  
−
*[http://www.madelectrical.com  Mad Electrical], a good source of information on the topic of alternators and automotive electrical systems.
+
*
−
*[http://randysrepairshop.net/interpreting-the-test-results-gm-si-ac-generator-with-built-in-voltage-regulator.html Interpreting test results]
+
−
*[http://oljeep.com/AltTheory17/AlternatorTheoryVersion17R1.htm Alternator testing and theory]
+
−
<br><br>
+
−
[[Media:Delco-Remy Alternator Identification Guide]]
+
−
 
+
−
[[Media:Delco-Remy Diagnostic Procedures Manual]]
+
−
 
+
−
[[Media:http://www.delcoremy.com/Alternator/Literature.aspx]]
+
−
 
+
−
[[Media:http://www.alternatorparts.com/]]
+
−
 
+
−
 
+
−
[[Category:Electrical]]
+
−
[[Category:Troubleshooting]]
+

Latest revision as of 08:01, 30 December 2024

Retrieved from "https://www.crankshaftcoalition.com/wiki/index.php?title=Troubleshooting_alternators&oldid=3487909"
Personal tools
Namespaces
Variants
Actions
Navigation
Categories
Toolbox
 
Terms of Use
Copyright
Privacy Policy