ARMY TM 9-6115-60412NAVY NAVFAC P-8-633-12(e) Set a multimeter to RX1 scale and check for continuity across terminals 1 and 2. Resistance readingshould be less than one ohm.(f) Reset multimeter to RX 1000. While observing the multimeter indication, slowly rotate knob in aclockwise direction. Meter resistance indication must increase smoothly, with no erratic jumps atany points in travel.(g)When knob (wiper arm terminal 2) is in the fully clockwise stop position, total resistance indicationshall be 500 ±50 ohms.(h)Reconnect wire removed from terminal 3.(i) The rheostat is not repairable. Replace the rheostat if it does not meet the specifications above.(2) Replace. See Figure 5-2.(a) Tag and disconnect wiring from VOLT ADJ rheostat R101R (11), if necessary.(b) Remove knob (10) from front panel.(c) Loosen and remove rheostat locking nut at front of panel and remove the rheostat assembly from therear.(d) Install VOLT ADJ rheostat R101 R (11 ) at rear of panel and secure in position with locking nut sothat when the knob (10) is attached with the shaft rotated fully counterclockwise, the arrow is at the 9o'clock position.(e) Secure knob (10).(f) Connect wires as tagged. Remove and discard tags.(g) Close remote control panel and secure by locking three oval studs at top of the panel.k. PARALLELSWITCHS6R(12.Figure5-2).The PARALLEL SWITCH S6R is a two-section, or deck, rotaryswitch with handle spring return to normal-vertical position following a command operation. The switch is used toselect either single unit or parallel generator set operation.NOTESwitch wiring position numbers are translated as follows. the first digit defines thesection, or deck, In relation to the handle end, the second digit is a specific terminal onthat deck. For example position 23 is located on the second deck, the terminal isnumber 3.(1) Test.(a) Shut down the generator set See Figure 2-23.(b) Open the RCM panel by unlocking three oval studs across the top of the panel.(c) Tag and disconnect wiring from PARALLEL SWITCH S6R (12) terminals.(d) Set a multimeter to RX1 scale and test for contact continuity in the switch positions specified in thechart in Figure 4-71. Meter should indicate zero ohms at all points marked In the chart.(e) Multimeter should indicate Infinite ohms at all blank contacts in the chart.(f) Rotate handle to the SINGLE position and release handle. Handle should return to the normal-vertical position automatically.(g) Repeat step f, above, with handle rotated to the PARALLEL position.(h) Replace PARALLEL SWITCH S6R (12) if it falls to pass testing as described above.(i) Connect wires to PARALLEL SWITCH S6R as tagged Remove and discard tags.5-20
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