OM3006.3 04/98 Operation - Section 3 Instrument Panel and Indicators Page 3-31 Transmission Oil Filters Crankcase Pressure The Transmission Oil Filters Monitor lamp (13, Figure 3-9) will illuminate if the trans- mission controller detects that a trans- mission filter is restricted, or that the wire between the controller and the switch is cut or broken. If this lamp flashes and the alarm buzzer sounds, notify maintenance personnel, immediately. As soon as practical thereafter, drain the transmission oil, replace the transmission filters, and check for con- tamination in the oil.
The Crankcase Pressure Monitor lamp (17, Figure 3-9) will illuminate if the engine crankcase pressure is greater than 14.5 in. of H 2 O (water) for more than 5 seconds. At the same time a fault code will be registered in the Centry System. (Refer to CENTRY FUEL SYSTEM DIAGNOSTICS later in this section.) Panel Dimmer Switch Lamp Test The Panel Dimmer Switch (18, Figure 3-9) is used to adjust the brightness of the lighting inside the monitor panel. The Lamp Test switch (14, Figure 3-9) is a three position, two function switch. The switch is spring loaded to the middle, ‘‘neutral’’ posi- tion.
If depressed on the right side and held, it is a lamp test for all of the monitor lamps except the check engine lamp. Adjust as follows: To increase brightness, turn clockwise. If the left side of the rocker switch is depressed held the lamp test for the check engine lamp will function. To decrease brightness, turn counter-clockwise. When the check engine lamp is illuminated because of a fault in the Centry System, depress and release the left side of the rocker switch. Wait, and the Check Engine lamp will begin flashing the fault codes.
(Refer to CENTRY FUEL SYSTEM DIAGNOSTICS later in this section.) Engine Oil Pressure The Engine Oil Pressure Monitor lamp (19, Figure 3-9) will illuminate if the engine oil pressure falls below a certain value for a 5 second period of time. That value is dependent on engine RPM. At the same time a fault code will be registered in the Centry System. (Refer to CENTRY FUEL SYSTEM DIAGNOSTICS later in this section.) Low Brake Pressure The Low Brake Pressure Monitor lamp (15, Figure 3-9) will illuminate if the trans- mission controller detects that the brake system hydraulic pressure is below 1850 psi, or that the wire from the switch to the controller is cut.
Lateral Slope Warning The Lateral Slope Warning Monitor lamp (16, Figure 3-9) will illuminate if the dump body is off of the frame and the lateral slope of the truck is beyond a pre-set safety limit. (This is a tip-over warning device)