TM 5-3805-261-20 HYDRAULIC SYSTEM MAINTENANCE.  (cont) 15-16. Left Blade Lift Check and Relief Valve.  (Sheet 1 of 4) This task covers: a. Removal b. Cleaning c. Inspection d. Installation INITIAL SETUP: Applicable Configurations Personnel Required All Construction equipment repairer MOS.  62B Tools General Mechanic’s Tool Kit: References Automotive (NSN 5180-00-177- TM 5-3805-261-10 7033) LO 5-3805-261-12 Test Equipment Special Environmental Conditions None None Materials/Parts General Safety Instructions Dry cleaning solvent, None Item 14, Appendix C Clean cloths, Item 39, Torques Appendix C All fasteners are tightened to Detergent, Item 8, Appendix C standard torques.  Refer to Small tags, Item 41, Appendix E. Appendix C Preformed packings, Items 9, 11, 13, 15 Troubleshooting References None Equipment Condition TM 5-3805-261-10 Vehicle parked on level ground. Parking/emergency brake applied. Equipment lowered to the ground. Engine stopped. Master disconnect switch off. Hydraulic pressure relieved. Go to Sheet 2 15-54