TM 10-3930-643-34 HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE. 12-16. Fork Position Cylinders (S/N 2001 and above). (Sheet 1 of 10) This task covers: a. Removal b. Disassembly C.    Cleaning/Inspection    d.    Assembly e. Installation f. Testing INITIAL  SETUP Tools Materials/Parts Tool Kit, General Mechanic’s Cleaning  solvent Automotive (App. C, Item P-D-680 5) NSN 5180-00-177-7033 Shop Equipment, Automotive Maintenance  and  Repair: Field  Maintenance,  Basic, Less  Power NSN 4910-00-754-0705 Shop Equipment, Automotive Maintenance  and  Repair: Field Maintenance NSN 4910-00-919-0076 Clean cloth (App. C, Item 24) Hydraulic fluid (App. C, Item 19) Small tag (App. C, Item 28) Fine emery cloth (App. C, Item 4) Seal  (4) Preformed  packing  (5) Cotter pin (2) Strip Wiper Torques Nuts (15 and 20) to 90 lb-ft. EQUIPMENT   CONDITION References TM   10-3930-643-10 Condition   Description Hydraulic  pressure  vented. Go to sheet 2 12-142