GEAR ASS. (20teeth) 1G1505 - Caterpillar

Table 1 lists the diagnostic trouble code for low intake manifold air pressure.Note: Refer to Troubleshooting, "Cat ET Service Features" for information about service features.
Table 1
Diagnostic Trouble Codes    
J1939 Code    CDL Code    Code Description
(code descriptions may vary)    Comments    
102-1     E1045 (3)     Engine Intake Manifold #1 Pressure : Low - most severe (3)     The code is logged.
Engine power is derated.    
102-18     E1045 (2)     Engine Intake Manifold #1 Pressure : Low - moderate severity (2)     The code is logged.
Engine power is derated.    
2630-1     E1107 (3)     Engine Charge Air Cooler Outlet Temperature : Low - most severe (3)     The code is logged due to a restriction in the intake manifold that can be causes by icing.    
Follow the troubleshooting procedure in order to identify the root cause of the problem.    
Table 2
Associated Diagnostic Trouble Codes    
E583    
107-15    
107-16    Complete the procedure in the order in which the steps are listed.
Table 3
Troubleshooting Test Steps    Values    Results    
1. Check for Diagnostic Trouble Codes
A. Connect to Cat® Electronic Technician (ET).
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Determine if an associated code listed in Table 2 is active or logged. Table 2 lists associated diagnostic codes.
   
Codes
   
Result: An associated code is active.
Repair: Refer to Troubleshooting, "Diagnostic Trouble Codes" in order to troubleshoot the associated diagnostic code.
Result: An associated code is not active or logged.
Proceed to Test Step 2.
Result: An E1045 or 102-18 code is active.
Proceed to Test Step 2.
Result: A code is not active or logged.
Proceed to Test Step 2.
   
2. Check the Air Inlet System for Restrictions
A. Visually inspect the air filter for cleanliness on engines without an electronic monitoring system on the inlet air system. A mechanical indicator may be used to monitor inlet air restrictions. Use the indicator to determine the cleanliness of the inlet air system. Also, inspect the piping for restrictions.
   
Restrictions
   
Result: The air filter is clean and a restriction is not found.
Proceed to Test Step 3.
Result: The inlet air system is restricted.
Repair: Clean the filter or replace the filter. Remove all obstructions in the inlet air piping. Verify that the problem has been resolved. If the problem still exists, proceed to Test Step 3.
   
Illustration 1 g02893499
Typical points of inspection
Table 4
Troubleshooting Test Steps    Values    Results    
3. Inspect the Air Piping and Connections
A. Inspect the piping and the hose connections from the turbocharger compressor outlet to the Air to Air Aftercooler (ATAAC) inlet ( if equipped). Remove the hose connections and inspect the hose connections for cuts or damage.
   
Connections
   
Result: The piping or hose connections were damaged.
Repair: Replace the damaged piping or hose connections. Verify that the problem has been resolved.
If the problem still exists, proceed to Test Step 4.
Result: The piping was not damaged.
Proceed to Test Step 4.
   
4. Perform an ARD Air System Service Test
A. Perform the