TM10-3930-660-20 W - Weekly Q - Quarterly S -  Semiannually A -  Annually Item To Be Inspected Procedure:  Check  for  and  repair, fill or adjust as necessary BOOM ASSEMBLY Remove rear boom cover and check all visible boom wear pads (front and rear). Refer to para. 18-21 for inspection   procedures. TRUCK,  FORKLIFT Perform annual safety inspection in accordance with TB 43-0142, Safety Inspection and Testing of Lifting Devices. COOLANT MIXTURE CHECK Check for 50-50 mix of ethylene glycol and clean water. Refer to MIL-A-46153. If necessary, drain and refill engine cooling system. Refer to para. 7-3. FUEL FILTERS Replace primary and secondary engine fuel filters, para.  5-16. 2-8