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Shop manual máy khoan hầm Boomer H282 (Phần 4) Phần động cơ
2-91. REQUIRED TOOL1. REQUIRED TOOLGROUP 4 FAN DRIVE CIRCUIT FOR COOLING SYSTEMGROUP 4 FAN DRIVE CIRCUIT FOR COOLING SYSTEMItem SpecPressure gauge 250~300 kgf/cm2 (3550~4270 psi)rpm gauge 200~2000 rpmToolWrench 13 mmHex. wrench 3 mm2. PRESSURE CHECK AND ADJUSTMENT2. PRESSURE CHECK AND ADJUSTMENTSpecificationSpecificationCooling fan speed (rpm) Pressure [kgf/cm2 (psi)]1100±10 120±5 (1710±70)1)1)Check pointCheck point2)2)Uni-dictional Bi-dictionalRelief valveRelief valveHarness connector (CN-154)Harness connector (CN-154)WTHCS01Pressure checkPressure checkInstall the pressure gauge to fan drive motor ( )Disconnect CN-154.Check the fan drive motor pressure at high engine rpm.Check the cooling fan speed using rpm gauge at high engine rpm. 3)3)(1)(2)(3)(4)AdjustmentAdjustmentTurn the adjusting screw clockwise to increase the cooling fan rpm and relief pressure.Turn the adjusting screw counter clockwise to decrease the cooling fan rpm and relief pressure.4)4)Adjusting screwWTHCS02(1)(2) . ADJUSTMENTSpecificationSpecificationCooling fan speed (rpm) Pressure [kgf/cm2 (psi)]1100±10 120±5 (1710±70)1)1)Check pointCheck point2)2)Uni-dictional Bi-dictionalRelief valveRelief. (CN-154)Harness connector (CN-154)WTHCS01Pressure checkPressure checkInstall the pressure gauge to fan drive motor ( )Disconnect CN-154.Check