TM10-3930-660-34 16-7.  FRAME TILT/BRAKES RELIEF VALVE - REPAIR This task covers: a.  Disassembly b.  Cleaning c.  Inspection d.  Assembly INITIAL SETUP: Tools Materials/Parts Tool Kit, Automotive Mechanics Hydraulic Oil (App.B, Item 35) Lint-Free Rags (App.B, Item 38) Shop Equipment, Automotive O-rings (5, 10, 11, 15) Maintenance, Common #2 Less Power Equipment Condition Frame tilt/brakes relief valve remove TM10-3930-660-20. DISASSEMBLY 1. REMOVE AND DISASSEMBLE RELIEF VALVE ASSEMBLY (1-19) FROM BODY (20). a. Use a wrench to hold jam nut (1) in place and remove acorn nut (2). b. Hold setscrew (3) in place and loosen jam nut (1). c. Record  number  of  turns  required  to  remove  setscrew (3). d. Remove two sealing washers (4) and O-rings (5).Discard O-rings (5). e. Remove  spring  (6),  plunger  (7)  and  seat  (8)  from  cap (9). f. Remove   and   discard   O-ring   (10)   and   two   O-rings (11).Back-up rings (12) are not removed. g. Remove spring (13), poppet assembly (14) and O-ring (15).  Discard O-ring (15). 16-31