SANY LATIN AMERICA
7-93
SY195/205/215/225C9 Crawler Hydraulic Excavator
Troubleshooting
Shop Manual - June 2013
7.7
Troubleshooting of Hydraulic and Mechanical Systems (H - Mode)
A Schematic of hydraulic system and mechanical system ........................................................ 7-94
Information contained in troubleshooting table .......................................................................... 7-96
H-1 Work equipment speed slow, or swing and travel speeds slow ......................................... 7-97
H-2 Engine speed drops sharply or engine stalls ..................................................................... 7-98
H-3 Work equipment, swing, and travel systems do not work .................................................. 7-99
H-4 Abnormal noise in hydraulic pump ................................................................................... 7-100
H-5 Auto deceleration not functioning..................................................................................... 7-101
H-6 Boom speed slow ............................................................................................................ 7-102
H-7 Arm speed slow ............................................................................................................... 7-103
H-8 Bucket speed slow ........................................................................................................... 7-104
H-9 Work equipment cylinders no response in separate operation ....................................... 7-105
H-10 Work equipment drifts excessively ................................................................................ 7-106
H-11 Work equipment moves sluggishly ............................................................................... 7-108
H-12 Other work equipment moves while single oil circuit is relieved .................................... 7-108
H-13 Travel speed drops considerably while swinging and travelling .................................... 7-109
H-14 Machine deviates during travel ...................................................................................... 7-110
H-15 Travel speed is low .........................................................................................................7-111
H-16 Machine is not steered well or steering power is low..................................................... 7-112
H-17 Travel speed cannot be changed................................................................................... 7-113
H-18 Travel system fails (only at one side)............................................................................. 7-114
H-19 Swing operation fails...................................................................................................... 7-115
H-20 Swing acceleration poor or swing speed low ................................................................. 7-117
H-21 Upper structure overruns remarkably when it stops swinging ....................................... 7-119
H-22 Large shock is produced when upper structure stops swinging .................................... 7-120
H-23 High noise is produced when upper structure stops swinging ....................................... 7-120
H-24 Swing drift excessive ..................................................................................................... 7-121
https://www.tractormanualpdf.info/
