HEAD 1262043 - Caterpillar

Setpoints For Timers
The following timers use 10 dip switches in order to set the time delay.
Timer (Engine Speed)
Timer (Engine Oil Level)
Timer (Engine Oil Level)
Timer (Low Starting Air Pressure) The switches are numbered from 1 to 10. The switches are two-position switches: "OPEN" and "CLOSE". See Table 1 for times of each switch.
Table 1
Switch Number (OPEN)    Time (Seconds)    
1     1    
2     2    
3     4    
4     8    
5     16    
6     32    
7     64    
8     128    
9     256    
10     512    Note: The first second is not a full second. Therefore, one second can be added to the time that is needed for a more accurate reading.See Table 2 for proper settings.The following timer uses a dial in order to set the time delay.
Timer (Post Lubrication)The dial uses a pointer in order to point to a number that represents the time delay in minutes.
Table 2
Timer    Label    Time Delay (seconds)    Switches "OPEN" (1)    
Engine Speed     "SPFTD"     3     1, 2    
Engine Oil Level     "OLLTD"     5     1, 3    
Low Starting Air Pressure     "ASPTD"     5     1, 3    
Particle Detector     "PDSTD"     5     1, 3    
Post Lubrication     "PLTD"     1     N/A    
( 1 ) All other switches will be in the CLOSED position.Setpoints for Tachometer
The tachometer is used in order to display the engine RPM and the tachometer is used in order to control four outputs: "Crank Terminate", "Crank Terminate Time Delay", "Engine Oil Step" and "Overspeed". See Table 3 for setpoints.ReferenceRefer to Service Manual, RENR5851, "3606, 3608, 3612, 3616 and 3618 Engines Tachometer" for calibration procedures for the tachometer.
Table 3
First Level Label     Second Level Label     Setpoint    
"Setpoints"     "#1 RPM"     113% of rated engine speed    
    "#2 RPM"     75% of rated engine speed    
    "#3 RPM"     170    
    "#4 RPM"     170    
"Input"     "PPr"     255    
    "Decimal Point"     "dPnt"    
    "PrE.D"     1    
"Scale"     "Gear Speed ="     1    
    "Display Speed ="     1    
"Unit"         "RPM"    
"Bar"     "Bar Type"     "||||||||||||||||||||"    
    "brLO"     0    
    "brHI"     1020    
"Sp.CF"     "SP #1"     "HI"
"NO"
0 "Hyst."
0 "t.dLy"
0 "r.dLy"    
    "SP #2"     "HI"
"NO"
0 "Hyst."
9 "t.dLy"
0 "r.dLy"    
    "SP #3"     "HI"
"NO"
169 "Hyst."
9 "t.dLy"
2 "r.dLy"    
    "SP #4"     "HI"
"NO"
169 "Hyst."
0 "t.dLy"
2 "r.dLy"    
"Filter"     "Value"     80    Parameters for Pyrometer
The pyrometer is an electronic scanner for exhaust temperatures. The pyrometer monitors the temperature of each cylinder exhaust port. The pyrometer also monitors the exhaust temperature at the turbocharger inlet. If the engine has two turbochargers, the pyrometer monitors the exhaust temperature at both turbocharger inlets. See Table 4 for setpoints.ReferenceRefer to Service Manual, RENR4911, "Exhaust Temperature Scanner"