TROUBLESHOOTING /SYSTEM PERFORMANCE Troubleshooting
A-3. Drop in moving speed
C h e c kin g m o vin g spe e d W h e n a u se r c o m plain s th at th e m ac h in e c an n o t m o ve at fu ll spe e d, first m e asu re th e m o vin g spe e ds in th e wo rk m o de (fixe d in th e 1 st ge ar) an d th e n in th e trave l m o de (AUT O) fo r bo th th e fo rward an d re ve rse dire c tio n s in o rde r to de te rm in e wh e th e r th e u se r fe e ls th e m ac h in e to be to o slo w alth o u gh th e spe e ds are n o rm al o r th e ve h ic le is tru e ly to o slo w du e to s o m e m alfu n c tio n . M e asu re th e drivin g spe e d in ac c o rdan c e with th e de sc riptio n in th e m e asu re m e n ts o f syste m pe rfo rm an c e .
T o o slo w spe e d in all m o de s
W o rk m o de : stan dard spe e d T rave l m o de : m axim u m spe e d is n o t re ac h e d
In su ffic ie n t e n gin e po w e r
D raggin g brake s (se rvic e , parkin g)
Stan dard spe e ds
N o rmal
（ １） In su ffic ie n t e n gin e pow e r (lac k of spe e d) Me asu re th e e n gin e maximu m spe e d w ith n o load an d th e spe e d w ith th e sh ove l lifte d. Me asu re th e maxim u m n o- load e n gin e spe e d in ac c o rdan c e w ith th e de sc ription in th e se c tion o f m e asu re me n ts o f e n gin e pe rfo rman c e , 「 En gin e spe e d」 ．
B e low stan dard valu e
Stan dard valu e
Fin d ou t c au se s fo r to o lo w spe e d e ve n w ith n o lo ad on th e e n gin e .
Me asu re m e n t of spe e d w ith sh o ve l raise d
1 . Ac c e le rator lin kage is fau lty, so th e m axim u m spe e d position c an n n ot be re ac h e d e ve n if th e pe dal is fu lly de pre sse d. 2 . Th e fu e l filte r an d air filte r are c logge d. 3 . Th e fu e l pu m p an d n ozzle s are fau lty. 4 . Th e re are oth e r fau lts in th e e n gin e .
1 .Lift arm to th e h igh e st positio n 2 .Me asu re th e e n gin e spe e d du rin g o pe ratio n of th e sh ove l main re lie f valve by ke e pin g th e le ve r in th e " Raise " position . 3 .Re fe r Pe rfo rman c e stan dard list for stan dard valu e .
ᦨ㜞࿁ォ㩇㩎㨹㩔㩩 /CZKOWO URGGF RQUKVKQP
B e low stan dard valu e
Stan dard valu e
D raggin g brake s (se rvic e , parkin g)
Re pair th e e n gin e
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