TM   10-3930-643-20 PRELIMINARY   PROCEDURES. 3-6. Troubleshooting   Symptom   Index. Component/System INSTRUMENT PANEL L OW  air   pressure   warning   light   does   not   operate Hydraulic   filter   warning   light   does   not   operate Engine   fan   off   light   does   not   operate Engine  oil  pressure  warning  light  does  not  operate Ground   driven   steering   warning   light   does   not   operate Parking   brake   light   does   not   operate Engine   water    temperature   warning   light   does   not   operate Brake   pressure   warning   light   does   not   operate Brake   pressure   warning   light   remains   on Torque   converter   oil   temperature   warning   light   does   not operate Engine   water   temperature   gage   not   operating Torque   converter   temperature   gage   will   not   operate Fuel  level  gage  does  not  operate Voltmeter   gage   does   not   operate Hourmeter   does   not   operate Air   pressure   gage   does   not   operate Engine   oil   pressure   gage   does   not   operate Start  switch  does  not  operate Engine   fan   off   switch   does   not   operate Rear   work   light   switch   does   not   operate Front   work   light   switch   does   not   operate Ether  start  switch  does  not  operate Bulb   check   switch   does   not   operate Forks   will   not   oscillate   or   separate Paragraph/ Malfunction Page 5-8a 5-8b 5-8c 5-8d 5-8e 5 - 8f 5-8g 5-8h 5 - 8i 5 - 8j 5-8k 5 - 8l 5-8m 5-8n 5-8o 5-8p 5-8q 5-8r 5-8s 5-8t 5-8u 5-8v 5-8w 5–8x 5-39 5-40 5-41 5-43 5-44 5-46 5-48 5-50 5-52 5-52 5-54 5-57 5-59 5-62 5-63 5-65 5-66 5-68 5-69 5-72 5-72 5-72 5-75 5-76 3-17