Skyjack SJKB-40-D - Page 83

SECTION 4, Page 32 SJKB-40-D, SJKB-40-D/FJUN. 1999
TROUBLESHOOTING (Cont.)
TROUBLE PROBABLE CAUSE REMEDY
HYDRAULIC SYSTEM (Cont.)
NO DRIVE FORWARD 1. Defective relief valve RV7. 1. Check Valve. Replace if
defective.
NO DRIVE REVERSE 1. Defective relief valve RV6. 1. Check Valve. Replace if
defective.
NO HIGH DRIVE
1. Stuck or defective high speed drive
valve 2H-59.
2. Relief valve RV5 set to low.
1. Check Valve. Replace if
defective.
2. Refer to section 5, "drive pump
test procedure". If pressure is
lower than 300 PSI replace relief
valve RV5.
NO ELEVATED DRIVE
1. Defective or misadjusted hi/low
drive relief valve RV4.
1. Check Valve. Replace if
defective.