Bandit 20XP - HYDRAULIC SYSTEM TROUBLE SHOOTING

Bandit
82
Copyright 12/17
MODEL 20XP
HYDRAULICS
HYDRAULIC SYSTEM TROUBLE SHOOTING
Before attempting any type of maintenance, disengage clutch, wait for the disc/drum to come to a complete
stop, turn o󰀨 engine, remove the ignition key, make sure the ignition key is in your possession, install the
disc/drum lock pin, and disconnect the battery.
PROBLEM POSSIBLE CAUSE SOLUTION
Feedwheel(s) turn
at normal speed
but does not chip
wood properly
1. Dull knives
2. Worn feed teeth
3. Low feedwheel relief valve setting
4. Pump is worn
5. Motor is weak
6. Feedwheel springs too loose
7. Clutch / belts out of adjustment
8. Engine not running at full RPMs
1. Replace knives
2. Replace
3. Readjust to specified PSI (bar)
4. Replace
5. Replace
6. Adjust
7. Adjust
8. Adjust
Feedwheel(s)
slow or stop when
feeding
1. Dull knives
2. Relief valve is worn or dirty
3. Pump is worn
4. Motor is worn
5. Feedwheel springs too tight
6. Feedwheel slide box sticking or hanging
up
1. Replace knives
2. Clean, reset, or replace
3. Replace
4. Replace
5. Adjust
6. Lubricate
Feedwheel(s) turn
slowly or not at all
1. Relief valve stuck open
2. Worn hydraulic motor
3. Pump is worn
4. Feedwheel relief pressure not correct
5. Pinched or damaged hydraulic hose
6. Feedwheel valve (control valve) worn &
leaking internally
7. Autofeed dump valve stuck open
8. Low hydraulic oil level
9. Plugged oil screen
10. Binding such as worn bearings, etc.
11. Control lever improperly shifting valve
1. Clean or replace
2. Replace
3. Replace
4. Reset to specified PSI (bar)
5. Replace
6. Replace
7. Lightly tap on dump block,
remove & clean, or replace
8. Fill 3/4” to 7/8” full
9. Replace
10. Repair
11. Readjust, valve must open
completely
Hydraulic oil
very hot, causing
system to operate
slowly
1. Dull knives
2. Low oil level
3. Pump is worn
4. Relief valve stuck open or opens easily
5. Damaged hose
6. Oil suction screen or filter plugged
7. Oil cooler plugged, if equipped
8. Motor is worn
9. Binding
10. Operator running oil over relief too much
11. Flow control is on for too long
1. Replace knives
2. Fill 3/4” to 7/8” full
3. Replace
4. Clean, reset, or replace
5. Replace
6. Clean or replace
7. Clean
8. Replace
9. Repair
10. Do not do this
11. Open flow control
MAINTAIN FEEDWHEEL HYDRAULIC PRESSURE AT SPECIFIED PSI (bar)
Follow typical hydraulic ow and relief settings on pages 76 - 81.
Follow proper hydraulic oil requirements on pages 74 - 75.