4811891 PANEL AS Caterpillar parts
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Alternative (cross code) number:
CA4811891
481-1891
4811891
CA4811891
481-1891
4811891
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A-Premium A/C Suction Line Hose Assembly Compatible with Dodge Ram 1500 2006-2008, Ram 2500 3500 2005-2009, 5.7L, Compressor to Evap
A-Premium [Vehicle Fitment]: Compatible with Dodge Ram 1500 2006 V8 5.7L(VIN: 2; Laramie, SLT Model only Fit the Model with VIN: D), Ram 1500 2007 V8 5.7L, Ram 1500 2008 V8 5.7L(VIN 2; Laramie, SLT, SXT Model only Fit the Model with VIN: D), Ram 2500/Ram 3500 2005-2009 V8 5.7L || [Reference Number]: HA-112081C, 4811891, 56625, 55057014AB || [Durable Construction] Four-layer hose construction can greatly resist wear and collapse, and feature wider operational temperature range, delivering outstanding performance in the most extreme conditions. || [Restore HVAC System]: Excellent fit for your vehicle's air conditioning system, ensuring that it operates at optimal levels and restoring your car's performance to new. || [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted A/C Refrigerant Hose. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.
A-Premium [Vehicle Fitment]: Compatible with Dodge Ram 1500 2006 V8 5.7L(VIN: 2; Laramie, SLT Model only Fit the Model with VIN: D), Ram 1500 2007 V8 5.7L, Ram 1500 2008 V8 5.7L(VIN 2; Laramie, SLT, SXT Model only Fit the Model with VIN: D), Ram 2500/Ram 3500 2005-2009 V8 5.7L || [Reference Number]: HA-112081C, 4811891, 56625, 55057014AB || [Durable Construction] Four-layer hose construction can greatly resist wear and collapse, and feature wider operational temperature range, delivering outstanding performance in the most extreme conditions. || [Restore HVAC System]: Excellent fit for your vehicle's air conditioning system, ensuring that it operates at optimal levels and restoring your car's performance to new. || [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted A/C Refrigerant Hose. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.
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Connections For The 9Y-2921 Relay
Illustration 7 g00312784
(A) - VDC. (B) + VDC. (C) 9Y-2921 Relay . (D) Terminal "85". (E) Terminal "86". (F) Terminal "87A". (G) Terminal "30". (H) Terminal "87". (I) Annunciator Panel.Connect the Terminal 4 "Coil" to the relay terminal "86".Connect the + VDC to the relay terminal "30" and the relay terminal "85".Connect the relay terminal "87" to the annunciator panel.The connection at the Terminal 4 "Coil" should be left open when the pyrometer's coil is not being used. Make sure that the thermocouple wire to channel "0" is connected by a jumper wire or connected to a thermocouple.Operation
Advancing The Channels
Illustration 8 g00312846
Once the pyrometer is powered up, the pyrometer will start reading the temperature of channel "0". In order to read the temperatures of the other eight channels, push the "PUSH TO ADVANCE" switch. The "PUSH TO ADVANCE" switch is located in the middle of the front panel. When the switch is actuated, the pyrometer's readout will increment to the next channel.Selector Switch
Illustration 9 g00312863
The selector switch is located on the lower left side on the back side of the pyrometer. Set the selector switch to the "IN-LINE" position for six cylinder in-line engines and eight cylinder in-line engines.For 12 cylinder engines and 16 cylinder engines which use two pyrometers, set the selector switch on one pyrometer to the "V-EVEN" position. Set the other pyrometer to the "V-ODD" position in order to correspond with the thermocouple wires that enter the individual pyrometers.Setpoint Adjustment
Illustration 10 g00313148
The high temperature alarm setpoint for channel "0" is read by pressing the "PUSH TO READ" button. In order to adjust the setpoint, first press the "PUSH TO READ" button. Next, unscrew the cap from the set point potentiometer. Then adjust the potentiometer setting with a small screwdriver until the display matches the desired temperature. Turn the potentiometer clockwise in order to increase the desired temperature. Turn the potentiometer counterclockwise in order to decrease the desired temperature.
Table 1
Recommended High Temperature Setpoints
High Turbocharger Exhaust Inlet Temperature (Standard)
630°C (1166.0°F)
High Turbocharger Exhaust Inlet Temperature (High Output)
650°C (1202.0°F)
High Turbocharger Exhaust Inlet Temperature (Heavy Fuel)
550°C (1022.0°F) The output switch will be activated when the temperature reading at channel "0" exceeds the desired temperature setting that was set previously.Note: The setting is retained until the potentiometer setting is changed.Testing The Thermocouple Leads
Illustration 11 g00313183
Whenever it is necessary to check the wiring of the thermocouple, disconnect the thermocouple's wiring at the back of the pyrometer. This will prevent damage to the pyrometer's sensitive circuitry.Troubleshooting
Thermocouple Wiring Checks
Disconnect the leads from the back of the pyrometer.
Check the resistance of the leads from thermocouple when the thermocouple is connected. A low resistance should be present. The actual value will depend on the length of the leads and the temperature of the thermocouple. If an open circuit is indicated, check the resistance of the thermocouple in order to determine the location of the open circuit. The open circuit could be in the
Illustration 7 g00312784
(A) - VDC. (B) + VDC. (C) 9Y-2921 Relay . (D) Terminal "85". (E) Terminal "86". (F) Terminal "87A". (G) Terminal "30". (H) Terminal "87". (I) Annunciator Panel.Connect the Terminal 4 "Coil" to the relay terminal "86".Connect the + VDC to the relay terminal "30" and the relay terminal "85".Connect the relay terminal "87" to the annunciator panel.The connection at the Terminal 4 "Coil" should be left open when the pyrometer's coil is not being used. Make sure that the thermocouple wire to channel "0" is connected by a jumper wire or connected to a thermocouple.Operation
Advancing The Channels
Illustration 8 g00312846
Once the pyrometer is powered up, the pyrometer will start reading the temperature of channel "0". In order to read the temperatures of the other eight channels, push the "PUSH TO ADVANCE" switch. The "PUSH TO ADVANCE" switch is located in the middle of the front panel. When the switch is actuated, the pyrometer's readout will increment to the next channel.Selector Switch
Illustration 9 g00312863
The selector switch is located on the lower left side on the back side of the pyrometer. Set the selector switch to the "IN-LINE" position for six cylinder in-line engines and eight cylinder in-line engines.For 12 cylinder engines and 16 cylinder engines which use two pyrometers, set the selector switch on one pyrometer to the "V-EVEN" position. Set the other pyrometer to the "V-ODD" position in order to correspond with the thermocouple wires that enter the individual pyrometers.Setpoint Adjustment
Illustration 10 g00313148
The high temperature alarm setpoint for channel "0" is read by pressing the "PUSH TO READ" button. In order to adjust the setpoint, first press the "PUSH TO READ" button. Next, unscrew the cap from the set point potentiometer. Then adjust the potentiometer setting with a small screwdriver until the display matches the desired temperature. Turn the potentiometer clockwise in order to increase the desired temperature. Turn the potentiometer counterclockwise in order to decrease the desired temperature.
Table 1
Recommended High Temperature Setpoints
High Turbocharger Exhaust Inlet Temperature (Standard)
630°C (1166.0°F)
High Turbocharger Exhaust Inlet Temperature (High Output)
650°C (1202.0°F)
High Turbocharger Exhaust Inlet Temperature (Heavy Fuel)
550°C (1022.0°F) The output switch will be activated when the temperature reading at channel "0" exceeds the desired temperature setting that was set previously.Note: The setting is retained until the potentiometer setting is changed.Testing The Thermocouple Leads
Illustration 11 g00313183
Whenever it is necessary to check the wiring of the thermocouple, disconnect the thermocouple's wiring at the back of the pyrometer. This will prevent damage to the pyrometer's sensitive circuitry.Troubleshooting
Thermocouple Wiring Checks
Disconnect the leads from the back of the pyrometer.
Check the resistance of the leads from thermocouple when the thermocouple is connected. A low resistance should be present. The actual value will depend on the length of the leads and the temperature of the thermocouple. If an open circuit is indicated, check the resistance of the thermocouple in order to determine the location of the open circuit. The open circuit could be in the
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