MAINTENANCE
235 MM331 (3--93)
3-14
HYDRAULIC SYSTEM TROUBLESHOOTING
Problem
Cause
Remedy
Machine travels slowly or not
at all
Parking brake set
Release parking brake
Machine travels slowly or not
at all
Control linkage broken or not
adjusted properly
Replace and/or adjust linkage
Relief valve stuck open (leaking)
valve
Clean or replace relief valve -- one
forward, one reverse
Motor failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING
: Hydraulic
motor failure
Pump failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING
: Hydraulic
piston pump failure
Hydraulic fluid level low
Fill hydraulic fluid reservoir
Side brush turns slowly or not
at all
Hydraulic control valve failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING
: Hydraulic
control valve failure
Hydraulic motor failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING
: Hydraulic
motor failure
Relief valve in control valve
sticking
Clean or replace relief valve
Gear pump failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING
: Hydraulic
gear pump failure
Hopper will not lift
Hydraulic control valve failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING
: Hydraulic
control valve failure
Hydraulic orifice at lift cylinder
plugged
Replace orifice
Lift cylinder failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING:
Hydraulic
cylinder failure
Gear pump failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING
: Hydraulic
gear pump failure
Hopper overloaded
Empty hopper
Lift arms binding
Replace and/or adjust lift arm
linkage
Hopper will not lower
Lift cylinder failure
See
HYDRAULIC COMPONENTS
TROUBLESHOOTING
: Hydraulic
cylinder failure
Lift arms binding
Replace and/or adjust lift arm
linkage
Hydraulic orifice at lift cylinder
plugged
Replace orifice
Summary of Contents for 235D
Page 1: ...235D MM331 ...
Page 6: ...ABOUT THIS MANUAL 235 MM331 3 93 d ...
Page 14: ...SPECIFICATIONS 235 MM331 3 93 1 2 ...
Page 18: ...SPECIFICATIONS 235 MM331 3 93 1 6 ...
Page 20: ...OPERATION 235 MM331 3 93 2 2 ...
Page 36: ...OPERATION 235 MM331 3 93 2 18 ...
Page 38: ...MAINTENANCE 235 MM331 3 93 3 2 ...
Page 49: ...MAINTENANCE 3 13 235 MM331 3 94 03460 HYDRAULIC SCHEMATIC ...
Page 60: ...MAINTENANCE 235 MM331 3 94 3 24 03490 ELECTRICAL SCHEMATIC ...
Page 61: ...MAINTENANCE 3 25 235 MM331 3 94 03490 ELECTRICAL SCHEMATIC AUXILIARY SIDE BRUSH ...
Page 78: ...MAINTENANCE 235 MM331 3 94 3 42 ...
Page 80: ...APPENDIX 235 MM331 3 93 4 2 ...
Page 84: ...STANDARD MODEL PARTS 235 MM331 3 93 5 2 ...
Page 134: ...STANDARD MODEL PARTS 235 MM331 3 94 5 52 4 2 3 1 Fig 29 Wire Harness Group ...
Page 138: ...OPTIONS 235 MM331 3 93 6 2 ...
Page 152: ...HYDRAULIC COMPONENTS 235 MM331 3 93 7 2 ...
Page 164: ...ENGINE PARTS DIESEL 235 MM331 3 93 8 2 ...