SCREEN AS-SUCTION 4153936 - Caterpillar

Group 2
1 -7C9710 Gaske2 -7N9785 Switch-temperature 2 -3S5849 Gasket1 -3S6228 Diaphragm1 -6V1179 Seal-O-Ring1 - 1107479 Control Group1 - 1131569 PlateAction Required
See attached rework procedure.
Service Claim Allowances
Groups 1 and 2
This is a 12-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
Group 1
1. Remove both existing high-pressure 4P4693 Turbochargers.2. Remove the wastegate.3. Underneath the right-hand turbocharger, remove the 4P4864 Bypass Housing that supports the wastegate. Also, remove the 4P4866 Coupling that directs bypassed exhaust gasses away from the wastegate (these are in the 9Y8911 Turbocharger Group).4. Install four 6V1525 Studs into the new 1054321 Bypass Housing where bypassed exhaust gasses will exit the housing.5. Install the 1054321 Bypass Housing on the engine.6. Install the 1131569 Orifice Plate on the four studs on the 1054321 Housing.7. Install the new 1054322 Coupling, four studs, and the existing nuts.8. Open up the wastegate and replace the existing diaphragm with a new 3S6228 Diaphragm.9. Install the wastegate and two 0R6757 Turbocharger Groups.10. When attaching the turbochargers to the 7E0087 Exhaust Coupling that is in between the smaller and larger turbocharger, replace the six existing 7L3195 Bolts with six new 5P7128 Bolts on each high-pressure turbocharger.11. Remove the two existing aftercooler water outlet temperature switches. They will be either 8N1425 (180° F) or 7N7849 (190° F). Install two new 7N9785 (225° F) Switches. One switch is located in the 2A6542 Wiring and Lighting Group and the other switch is located in the 7E6504 Electric Sensor and Mounting Group.12. Install the new 1107479 Control Group (personality module) in the engine control module. The new high-pressure 0R6757 Turbocharger Groups, new 1131569 Wastegate Orifice Plate, and new 1107479 Control Group (personality module) must be installed at the same time.
In the 793B, the new 1131569 Wastegate Orifice Plate is to be used for all altitudes from sea level to 12,000 feet