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CHASSIS AR 2278300 - Caterpillar

2278300 CHASSIS AR Caterpillar parts 621G CHASSIS
Alternative (cross code) number:
Caterpillar 2278300 CHASSIS AR

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Compatible equipment models: 2278300:

WHEEL TRACTOR  621G   Caterpillar
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Table 1
Tools Needed
Part Number Part Description Qty
198-4240 Engine Pressure Group
Digital Pressure Indicator 1
Illustration 1 g00293196
1U-5470 Engine Pressure Test Group
Refer to Special Instruction, SEHS8907, "Using the 1U-5470 Engine Pressure Group" for the instructions that are needed to use the 1U-5470 Engine Pressure Test Group. Refer to Operation Manual, NEHS0818, "Using the 198-4240 Digital Pressure Indicator" for the instructions that are needed to use the 198-4240 Digital Pressure Indicator.
Illustration 2 g01140264
Pressure Test Location
(1) Plug Use the following procedure in order to measure the inlet manifold pressure:
Remove plug (1) from the air inlet cover.
Connect the 1U-5470 Engine Pressure Group to the air inlet cover at the pressure test location. Note: A tee fitting or some other plumbing component will be necessary to allow the boost pressure sensor to be connected with a test location.
Record the value.
Compare the value that was recorded in Step 3 to the pressure that is given in the TMI.

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