Legend For Figure 5-4 No. Item Lubricant Interval Remarks 1 Winch Gear Box A Annually Drain and refill gearcase 1/2 to 2/3 full. 2 Winch Shaft Bearing B Monthly Apply one pump to fitting. 3 Extension Boom Top B Monthly Apply one pump to fitting. Surface 4 Rotation Gearbox B Monthly Apply one pump to fitting. Output Shaft 5 Exten.  Cylinder B Monthly Pump until excess lube Rod End Pin appears around pin.  Wipe off excess. 6 Boom Tip Sheave B Monthly Pump until excess lube appears around pin.  Wipe off excess. 7 Rotation Bearing B Monthly Apply 1-2 pumps, rotate (Access inside crane base) unit 1800 and repeat. 8, 9 Boom Cylinder B Monthly Pump until excess lube Pivot Pins appears around pin.  Wipe off excess. 10 Rotation Gear Box A Annually Drain and refill gearbox 1/2 to 2/3 full. 11 Hydraulic Tank C Annually Drain reservoir, clean suc- tion line strainer, refill with fresh oil. A= SAE 140EP Gearlube B= Medium Pressure Gun Lubricant C=  Hydraulic  Oil,  Winter  inhibited  and  anti-wear  type  "MS"  Industrial  Ident.    No.  S-150  Summer  SAE  10W40  API Service Class "NS" 5-5 FIELD TESTING 5-5.1 In  the  event  operation  of  the  crane  becomes  slow  or  sluggish  it  is  advisable  to  check  the  condition  of  the hydraulic system.  Follow the procedure below: a. Disconnect  the  inlet  (pressure)  line  at  the  control  valve  bank.    Tee  a  0-3000  psi  gauge  in  at  this  point  and reconnect the pressure line. b. Operate the boom control to "up." When the boom reaches its maximum travel, continue to hold the control lever to "up."  The gauge should quickly rise to the setting of the main relief valve. 5-11