Operator Cab and Controls - Section 32 08/11 OM3212 Page 32-24 AC/Heater Vent AC/heater vent (21, Figure 32-9) is provided for cir- culation of cooled or heated air through the cab. REAR OF OPERATOR CAB The following components are located behind the operator and passenger seats across the back wall of the operator cab (Refer to Figure 32-10): 1. Circuit Breaker Panel This panel contains all of the electrical circuit breakers on the truck. 2. Relay Boards These panels contain relays for various electri- cal circuits on the truck. Refer to the Shop Man- ual for specific information regarding the relay boards. 3. Relay Boards (see above) 4.
RCM - Retard Control Monitor This panel controls and monitors the fully hydraulic retarder system. Refer to the Shop Manual for specific information regarding this device. 5. RCM Data Port This is a connector to be used when communi- cations are required between the RCM and a personal computer. 6. ASC - Automatic Suspension Controller (Optional) This panel (when installed) controls and moni- tors the variable rate suspension units. Refer to the Shop Manual for specific information regarding this device. 7. ATC - Automatic Transmission Controller This panel controls and monitors the Komatsu fully automatic transmission.
It controls the shift schedules and lock-up clutch modulation and monitors numerous other sensor inputs. Refer to the Shop Manual for specific information regarding this device. 8. PMC - Powertrain Management Controller This panel controls, monitors, and manages all of the other monitors and controllers listed above. Refer to the Shop Manual for specific information regarding this device. 9. Terminal Strips - Terminals for various electrical circuits. Refer to the Shop Manual electrical schematic for specific information.