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PC58UU-3 20-101

TESTING AND ADJUSTING

Tools for testing, adjusting, and troubleshooting......................................................................................... 20-102

Measuring engine speed............................................................................................................................. 20-103

Measuring engine oil pressure.................................................................................................................... 20-103

Measuring compression pressure............................................................................................................... 20-104

Adjusting valve clearance ........................................................................................................................... 20-105

Testing and adjusting fuel injection timing................................................................................................... 20-106

Testing and adjusting alternator belt tension............................................................................................... 20-107

Adjusting fuel control linkage ...................................................................................................................20-107-1

Measuring exhaust color............................................................................................................................. 20-108

Testing clearance of swing circle bearing ................................................................................................ 20-108-1

Checking wear of sprocket.......................................................................................................................... 20-109

Testing and adjusting track shoe tension.....................................................................................................20-110

Adjusting brade control lever .......................................................................................................................20-111

Testing and adjusting hydraulic pressure in work equipment, swing, and travel circuits..............................20-112

Testing and adjusting LS differential pressure .............................................................................................20-114

Adjusting PC valve.......................................................................................................................................20-115

Testing and adjusting hydraulic pressure in control pump circuit.................................................................20-116

Measuring solenoid valve output pressure ..................................................................................................20-117

Measuring PPC valve output pressure ........................................................................................................20-119

Adjusting PPC valve ................................................................................................................................... 20-121

Testing swing holding brake inlet pressure ................................................................................................. 20-121

Testing and adjusting travel deviation ......................................................................................................... 20-122

Measuring oil leakage from work equipment cylinder ................................................................................. 20-124

Bleeding air from each part......................................................................................................................... 20-126

Releasing residual pressure from hydraulic circuit ..................................................................................... 20-128

Releasing residual pressure from hydraulic tank ........................................................................................ 20-128

Pressurizing hydraulic tank ......................................................................................................................... 20-128

Resetting procedure of electric system and check of its operation............................................................. 20-129

Procedure for replacing potentiometer........................................................................................................ 20-142

Procedure for testing diode......................................................................................................................... 20-143

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