TM   10-3930-643-20 NON-ELECTRICAL  GAGES  MAINTENANCE. 15-3. Sight   Indicator   (Sheet   2   of   2) CLEANING/INSPECTION 3. Clean   all   parts   with   mild detergent   and   water   solution. Wipe   dry   with   clean   cloth. Refer   to   paragraph   2-8. 4. Inspect   all   parts, Refer   to paragraph   2-9. INSTALLATION 5. Install   new   preformed   packing on   sight   indicator. 6. Install   sight   indicator   at   top of   radiator   in   rear   of   vehicle by  hand. NOTE Return   M10A   Forklift   to   original equipment    condition. END OF TASK 15-9/(15-10   blank)