LeeBoy 8616 - Page 119

8
LeeBoy Model 8616 Conveyor Paver 8-3
Troubleshooting
SYMPTOM CAUSE REMEDY
Tracks not running smooth Tracks too loose Tighten track pad bolts
Too low engine rpm to hold
track tension
Rev engine to 1400 RPM and throttle back to one-
half
Track rollers worn Replace
Track tension pressure Check pressure
NOTE: Pressure should be set to 1200 PSI
Machine will not pull on one
or both sides
Faulty hydraulic motor Replace
Pump pressure too low Pump pressure should be 3000 PSI
Faulty torque hub Rebuild or replace
Engine runs but no
hydraulics
Pump drive coupling faulty Replace
Defective pump Replace
Auger hanging up or will not
turn
Chain too loose Adjust
Chain broken Replace
Faulty motor Replace
Solenoid valve defective Replace solenoid
Asphalt set up around auger Keep clean and oiled
Overload of material to augers Set conveyor to proper speed in Auto or use
paddles in Manual position
Screed extensions binding Asphalt set up around extension Keep clean and oiled
Screed extension loose
(work up and down)
Out of adjustment Adjust hold downs on extensions
Screed leaving streak down
center of pavement
No lead crown in screed Crown leading edge of screed
Screed worn out Replace
Extensions set too low
Adjust extension. Always start out in the morning
with extensions all the way up, no down pressure
Screed not heated properly Check elements and heat control box
Screed leaving ripples Extension set too low Readjust extensions
Extensions work up and down Adjust top guide
Extension rod bushings worn Replace bushings
Flight screw locking up Twisting screed too far Give screed time to react
Screw seized Replace screw
Flight screw bearing
damage
Twisting screed too far Give screed time to react
Loading and unloading Check ramps for easy access
Hydraulic oil running out of
breather cap
Hydraulic oil tank overlled Drain
Oil over-heated Slow paver down about 10% to 15%
Check oil cooler and thermostat
Hydraulic pump cavitation
or lost power
Low level in hydraulic tank Fill
Clogged lters Replace
Suction hose loose Retighten
Charge pump worn Rebuild
Table 8-1. Paver Troubleshooting (Continued)
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