TM 10-6640-238-13 4-105 4-44.    REID VAPOR PRESSURE TESTING SYSTEM. This task consists of: a. Remove b. Install c. Calibrate INITIAL SET-UP Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 1) Materials/Parts Required Lockwashers, (20) Personnel Required Two (2) General Safety Instructions WARNING ELECTRICAL SHOCK Before  performing  any  maintenance  actions  on  electrical  equipment,  ensure  all electrical power has been turned off.  Failure to comply with this warning may result in serious injury or death. REMOVE 1. Remove RVP Bath.  See Figure 4-38. a. At Main Power Panel place circuit breaker A1CB16 to OFF. b. Unplug RVP bath power cord from convenience outlet. c. Disconnect RVP bath drain (1) by loosening hose clamp (2). d. Remove four screws (3). WARNING Two people  are  required  to  remove  RVP  bath  because  of  its  weight.    Failure  to comply with this warning could result in serious injury to personnel or damage to equipment. e. Lift RVP bath (4) up from cabinet until it clears countertop (5). NOTE For component Remove refer to TM 10-6640-226-13&P. 2.     Remove RVP Test Bomb and Gauge.  See Figure 4-39. a. Loosen two wing nut bolts (1) and loosen bomb rack (2). b.     Grasp gauge support handle (3) and lift RVP bomb (4) clear of air manifold.  Lift liquid chamber (5) clear of air manifold. c.     Remove RVP gauge (6) from RVP bomb (4).