EDGE - CUTTING 9U8057 - Caterpillar

On-Highway Engine: C13 (S/N: KCB1-UP)Introduction
Do not perform any procedure in this Special Instruction until you read this information and you understand this information.Procedure for Removing the Continuous Regeneration Trap Diagnostic Module (CRTdm) and Installing a New CRTdm in a New Location
The following Special Instruction provides the proper procedure for replacing the CRTdm and for relocating the CRTdm on MotorCoach Industries (MCI) buses equipped with Caterpillar C13 Engines.
Table 1
Required Parts    
Part Number     Description     Qty    
302-1563     Exhaust Monitor Gp     1    
Parker 68C--4-2     6.35 mm (0.25 inch) to
3.175 mm (0.125 inch) male NPT brass compression fitting     1    
Parker 170-PMTNS-4-2     90°
6.35 mm (0.25 inch) to
3.175 mm (0.125 inch) male NPT brass air brake fitting     1    
Parker 66PMT-4-4    
6.35 mm (0.25 inch) PTC to
6.35 mm (0.25 inch) female NPT brass air brake fitting     1    
Parker PFT-4A-BLK    
6.35 mm (0.25 inch) air brake hose    
1219 mm (4 ft)    
03 - 59 - 2187     Mounting Bracket     1    
03 - 59 - 2188     Mounting Bracket     1    
N/A     Jumper Wire Harness     As Needed    
Table 2
Required Tools    
Description     Qty    
Hole Saw     1    
Rivet Gun     1    Removing the CRTdm
Illustration 1 g01354420
Disconnect the CRTdm power, the CRTdm output, and the thermocouple pigtails from the MCI Orginal Equipment Manufacture (OEM) wiring harness (1) .
Illustration 2 g01354423
Disconnect the copper tubing (2) from the CRTdm.
Remove the 4 mounting screws that attach the CRTdm to the luggage bay bulkhead.
Remove the CRTdm from the vehicle and return the CRTdm to Johnson Matthey 380 Lapp Rd. Malvern, PA 19355.
Illustration 3 g01354426
Remove the OEM CRTdm wiring harness from the bundle of wires and pull back to where the copper tubing (2) comes through the conduit from the engine space (3) .
Use a tube cutter to cut the copper tubing (2) that is referred to in Step 2. Cut the copper tubing in the area where it comes out of the conduit into the luggage comparment (3). Discard the copper tubing after the copper tubing has been cut. Refer to Area (3) in Illustration 3 for the proper location to cut the copper tubing. Installing the New CRTdm in the New Location
Illustration 4 g01354427
(4) The locations to drill the holes to mount the CRTdm. (5) Mounting brackets (03 - 59 - 2187) and (03 - 59 - 2188)
Drill holes in the locations of callout (4) to mount the mounting brackets. Refer to the supplier drawing 08-20-1082 for the proper location to drill the mounting holes.
Install the CRTdm 302-1563 Exhaust Monitor Gp as shown in MCI drawing 08-20-1082. Mount the 302-1563 Exhaust Monitor Gp using the supplier's mounting brackets 03-59-2187 and 03-59-2188.
Illustration 5 g01368113
(6) The pressure transducer on the CRTdm
Apply anti-seize compound or Teflon tape to the threads on the pressure transducer (6) on the CRTdm.
Thread the new air brake fitting (Parker 66PMT - 4 - 4) onto the pressure transducer (6) on the