Komatsu PC88MR-10 Shop Manual page 494

40 Troubleshooting
Table of contents
E-42 Boom LOWER is not displayed correctly with monitoring function ................................. 40-438
E-43 Arm OUT is not displayed correctly with monitoring function......................................... 40-439
E-44 Arm IN is not displayed correctly with monitoring function ............................................ 40-440
E-45 Boom RAISE is not displayed correctly with monitoring function ................................... 40-441
E-46 Bucket CURL is not displayed correctly with monitoring function................................... 40-442
E-47 Bucket DUMP is not displayed correctly with monitoring function.................................. 40-443
E-48 Boom swing left is not displayed correctly with monitoring function ............................... 40-444
E-49 Boom swing right is not displayed correctly with monitoring function ............................. 40-445
E-50 Swing is not displayed correctly with monitoring function.............................................. 40-446
E-51 Travel is not displayed correctly with monitoring function ............................................. 40-447
E-52 Blade RAISE ON is not displayed correctly with monitoring function ............................. 40-448
E-53 Blade LOWER ON is not displayed correctly with monitoring function ........................... 40-450
E-54 KOMTRAX system does not operate normally ............................................................ 40-452
Troubleshooting of hydraulic and mechanical system (H-mode) .................................................. 40-454
Information described in troubleshooting table (H-mode) ..................................................... 40-454
System chart of hydraulic and mechanical systems............................................................. 40-455
Failure mode and cause table ........................................................................................... 40-457
H-1 All of work equipments, swing and travel operations lack speed or power ....................... 40-465
H-2 Engine speed drops significantly or engine stalls .......................................................... 40-467
H-3 Any of work equipment, swing and travel does not work ................................................ 40-468
H-4 Unusual sound is heard from around hydraulic pump .................................................... 40-469
H-5 Fine control performance or response is poor ............................................................... 40-470
H-6 Boom speed or power is low ....................................................................................... 40-471
H-7 Arm speed or power is low .......................................................................................... 40-474
H-8 Bucket speed or power is low...................................................................................... 40-476
H-9 Boom swing speed or power is low .............................................................................. 40-478
H-10 Blade speed or power is low...................................................................................... 40-480
H-11 Work equipment does not move in single operation ..................................................... 40-482
H-12 Hydraulic drift of boom is large .................................................................................. 40-483
H-13 Hydraulic drift of arm is large ..................................................................................... 40-484
H-14 Hydraulic drift of bucket is large ................................................................................. 40-485
H-15 Hydraulic drift of blade is large................................................................................... 40-486
H-16 Time lag of work equipment is large ........................................................................... 40-487
H-17 In combined operation of work equipment , equipment having heavier load moves
slower................................................................................................................ 40-489
H-18 In combined operation of swing and boom RAISE, boom rising speed is low ................. 40-490
H-19 In combined operation of work equipment or swing and travel, travel speed drops
largely................................................................................................................ 40-491
H-20 Machine does not travel straight ................................................................................ 40-493
H-21 Travel speed is slow ................................................................................................. 40-495
H-22 Machine is hard to steer or travel power is low ............................................................ 40-497
H-23 Travel speed does not change, or travel speed is too slow or fast ................................. 40-500
H-24 One of tracks does not run ........................................................................................ 40-501
H-25 Upper structure does not swing to the right or left ........................................................ 40-503
H-26 Upper structure swing only to the right or left .............................................................. 40-504
H-27 Swing acceleration or swing speed is low in both directions (right and left) .................... 40-505
H-28 Swing acceleration performance is poor or swing speed is slow in only one
direction............................................................................................................. 40-506
H-29 Upper structure overruns excessively when it stops swinging (both right and
left).................................................................................................................... 40-507
H-30 Upper structure overruns excessively when it stops swinging (either right or left) ........... 40-508
H-31 Shock is large when upper structure stops swinging.................................................... 40-509
H-32 Large unusual noise is heard when upper structure stops swinging .............................. 40-510
H-33 Swing drift on a slope is large while swing parking brake is applied............................... 40-511
H-34 Swing drift on a slope is large while swing parking brake is released............................. 40-512
H-35 Oil flow in attachment circuit cannot be controlled ....................................................... 40-513
Troubleshooting of engine (S-mode)......................................................................................... 40-514
Information mentioned in troubleshooting table (S mode)..................................................... 40-514
S-1 Engine does not crank when starting switch is turned to START position......................... 40-515
40-6 PC88MR-10