1. TROUBLESHOOTING INFORMATION
Troubleshooting [Page 1]
REPORT DATE 27th – November - 2015 MACHINE MODEL PC200-8MO
BRANCH Francistown MACHINE S/N C12150
MACHINE LOCATION Pandamatenga ENGINE MODEL SAA6D107E-1
BUSSINESS CONSTRUCTION ENGINE S/N 26614944
CUSTOMER DURAFLEX DELIVERY DATE 13th October 2013
TROUBLE DATE 30 - October - 2015 SMR 2441
REPORT FROM THE CUSTOMER:
WORKING EQUIPMENT SWING AND TRAVEL SYSTEMS DO NOT WORK
HOW WAS THE FAILURE NOTICED:
The machine was on production and started by not swing, and the operator tried to move the machine to a safe place. As
the machine reaches the place and immediately all the hydraulic systems shut off. The working equipment, swing and
travel were not working.
POSSIBLE CAUSE OF THE FAILURE:
# Malfunction of the PPC lock solenoid valve
# Malfunction of self-reducing valve
# Defective piston pump
# Defective damper
ACTION CARRIED OUT:
Checked oil levelsand started the machine to warm up oils. Operated the safety lock lever to release and
operated the PPC levers and there was no response on the hydraulic system. Disconnected the supply hose to
the PPC valve and tested, and there was no oil coming out of the hose. Disconnected the hose supplying the
solenoid block from the self-reducing valve and tested, and there was no oil coming out from the self-reducing
valve. Removed the self-reducing valve and dismantle it. Find the spool stuck. Cleaned the valve block and parts
with clean diesel. Assembled the valve together, installed it back on the machine, and tested. All the working
equipment swing and travel were ok. Carried out cylinder bypass and found the arm cylinder passing. Removed
the cylinder. Electrical circuit was tested and everything wasfunction well.
Self-ReducingValve
Stuck Spool in the Valve (14)

2. TROUBLESHOOTING INFORMATION
Troubleshooting [Page 2]
Cylinder Piston Seals In the Hydraulic Filter
Cylinder Damage Piston
Cylinder Damaged Barrel
Numberon the Cylinder

3. TROUBLESHOOTING INFORMATION
Troubleshooting [Page 3]
RECOMMENDATION
The hydraulic system needs flushing. Arm cylinder and hydraulic oil cooler needs replacement. Pm Clinic to be
carried out after flushing the hydraulic system.
CUSTOMER’S NAME:___________________________________________ SIG: _______________ DATE: _________________________
PRODUCT SUPPORT’S NAME: Moses Akuje SIG: _______________ DATE: 27 – November - 2015