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HARNESS AS-SENSOR 3599898 - Caterpillar



3599898 HARNESS AS-SENSOR Caterpillar parts 627H, 725C HARNESS
Rating:
10
Alternative (cross code) number:
CA3599898
359-9898
3599898
Caterpillar 3599898 HARNESS AS-SENSOR

Buy HARNESS AS-SENSOR 3599898 Caterpillar genuine, new aftermarket tractor parts with delivery
ARTICULATED TRUCK, WHEEL TRACTOR,

Compatible equipment models: 3599898:

ARTICULATED TRUCK  725C  
WHEEL TRACTOR  627H   Caterpillar
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Oil Pressure Test
Ensure that the engine oil pressure is within the correct operating range before you perform any tests on the compression brake. Low engine oil pressure can cause weak braking or no braking at all. High engine oil pressure may cause the compression brake not to operate at all. Refer to the Testing and Adjusting, "Engine Oil Pressure - Test" topic for more information.To properly troubleshoot the compression brake, the technician must know the oil pressure reading at the compression brake housings. The oil pressure reading on the oil pressure gauge in the instrument panel does not provide the same information as the oil pressure reading at the compression brake housings.Low oil pressure in the compression brake housings may cause weak braking or no braking at all. If the oil pressure in the compression brake housings is too high, the compression brake may not operate at all. High oil pressure may also prevent the compression brake from shutting off.Oil Pressure Test at Control Valve
Work carefully around an engine that is running. Engine parts that are hot, or parts that are moving, can cause personal injury.
Table 1
Tools Needed    
Part Number     Part Name     Quantity    
149-6111     Oil Pressure Test Kit     1    
Illustration 1 g00527135
(1) Pressure gauge (2) O-ring seals for the solenoid valve (3) Adapter (4) Test body for the control valve (5) Control valve adapter (6) Solenoid valve adapter
Assemble pressure gauge (1), control valve test body (4), and control valve adapter (5). Hand tighten the adapter assembly.
While the engine is not running, remove the control valve. Refer to Disassembly and Assembly, "Compression Brake - Disassemble" for more information.
Illustration 2 g00521294
Typical example (7) Bore
Insert the adapter assembly into bore (7) for the control valve. Hold the assembly approximately 3.18 mm (.125 inch) above the bottom of the bore in order to allow the oil to enter the adapter.
Start the engine. Ensure that the compression brake switch is in the OFF position.
Illustration 3 g00521295
Typical example (8) Solenoid armature
Hold the adapter assembly in place and depress solenoid armature (8). Record the oil pressure reading.Note: Hold the solenoid on only long enough to obtain the oil pressure reading. The oil pressure may be too low at idle in order to operate the compression brake. This condition is normal.
Increase the engine speed by 400 rpm.
Repeat Steps 5 and 6 up to the rated engine rpm.
Stop the engine. Install the control valve. Refer to Disassembly and Assembly, "Compression Brake - Assemble" for more information.The oil pressure readings above 1000 rpm should be 380 205 kPa (55 30 psi).If the oil pressure readings are too low, proceed to Testing and Adjusting, "Solenoid Valve (Compression Brake) - Test".If the oil pressure readings are too high in the compression brake housings, the engine oil pressure is too high. Refer to the Testing and Adjusting, "Engine Oil Pressure - Test" topic for more information.

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