ITR LDR33
- 1. REPORT DATE : July 25 2012 MACHINE MODEL : WA800-3 BRANCH : Phoenix MACHINE S/N : 50085 CUSTOMER BUSINESS : Mining ENGINE MODEL : SA12V140-1 CUSTOMER NAME : Moolmans ENGINE S/N : MACHINE LOCATION : Phoenix Mine, Tati DELIVERY DATE : TROUBLE DATE : July 23, 2012 SMR TROUBLE : 28,059 CAUSE OF THE FAILURE / ANALYSIS : (Describe detail of failure, analysis of the cause, operating conditions & ATTACHED PHOTOGRAPHS or Drawing) CORRECTION MADE : The internal situation of the faulty fuel injection pump will be figured out OTHERS INFORMATION Part Number : 6215-71-1930 as soon as the REMAN Center is done with the inspection. Replaced Fuel Injection Pump Customer Reported That The machine Does Not Have Power When Loading. Fuel Injection Pump INFORMATION TROUBLE REPORT SYMPTOM : Machine Powerless FAILURE : Crack, Dent, Worn, Scratch, Short Circuit, Burn, Bend, Loose, Rusty, Pitting, Broken etc Injector Pump Low Fuel Supply HOW WAS THE FAULT NOTICED MAIN COMPONENT PROBLEM 2. Performed Full PM Clinic (results below)1. Checked the Linkages for faults and adjustments Governor Lever Servo Valve Link Actuating RH Bank Fuel Supply Adjustable Link Rod 3. Findings and Application of Necessary Adjustments A D c B From Step 1, Linkages work properly and measurement are on specs only to find out that the Servo Valve(Figure D) sometimes does not retract affecting the idling of the engine. It does not rev when it gets stocked internally. Replacement of Servo was done to have proper movement on the Linkages. From Step 2, Obtaining low engine speed results, we tried to play with the Linkages. Pushing manually Figure B increases the engine RPM. But it is raising the output(via exhaust temp) on right bank giving us big difference compared to the left bank. Then adjustments made on a rod link(Governor) to balance the output and obtain the standard specifications on Engine Speed (High and Low). At T/C Stall and Hydraulic Stall, engine speed is still low, meaning the machine is still POWERLESS. Apparently boost pressures is still bad especially in the left bank even after doing some linkages adjustments. We've been looking for pressure leaks but everything is intacked. From these findings, we suspected that there is an internal failure on the fuel injection pump. ***highlighted items are not on specifications Page 1 glenv@komatsu.co.za 25/07/2012