Inlet Manifold Pressure For Turbocharged 3054 Machine Engines Caterpillar

INTEGRATED TOOLCARRIERS

Problem:

Formerly, there were no boost pressure specifications for the turbocharged 3054 Machine Engines in these applications. This made it difficult to troubleshoot "low power" complaints.

Solution:

In these wheel loader and integrated toolcarrier applications, the turbocharged 3054 Machine Engine will produce:

* 41 ± 7 kPa (6.0 ± 1.0 psi) boost pressure at High Idle

* 55 ± 7 kPa (8.0 ± 1.0 psi) at single torque converter stall rpm (approximately 2300 rpm).

* 72 ± 7 kPa (10.5 ± 1.0 psi) at double torque converter stall rpm (approximately 2250 rpm).

Use these specifications when troubleshooting a low power complaint on one of these engines.

The boost pressure can be measured at the port where the cold start heater (thermostart) is installed. Remove the cold start heater and install a suitable fitting to measure the boost pressure. A 7W-6217 Adaptor may be used to adapt the 7/8 inch - 14 threaded port to the 1/8 inch - 27 pipe thread.

NOTE: Variations in altitude, barometric pressure, fuel quality, humidity, and air temperature will have affects on boost pressure. Be aware of these affects when conducting the test.

NOTE: When reinstalling the cold start heater, be sure to remove all the air from the fuel line to the cold start heater while priming engine fuel system with the hand priming pump. Failure to remove all the air from the line may result in damage to the cold start heater.

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