918215/CP0407 66 Printed in U.S.A
TROUBLESHOOTING 1448 PLUS
GENERAL PAVER PROBLEMS DURING OPERATION
PAVER-RELATED MAT PROBLEMS
Problem Possible Cause Corrective Action
Engine operation erratic See “Engine” on page 65
Paver difficult to steer
(normal lead off to one side
may be as much as 1 to 2 ft.
in 100 ft. of travel under low or
no load conditions)
One forward/reverse lever not fully
engaged
Engage lever
Linkage for dual controls binding Free up linkage
Tracks not properly aligned Align tracks
Paver slowing down or exces-
sive power loss (travel speed
is 0-80 FPM)
Engine not running at rated speed Check fuel filter
Failure of hydraulic system component
(filter, motor, pump, etc.)
See “Hydraulic Pump and Motor System”
on page 69. Disassemble drive valve and
clean load checks.
Hydraulic controls stall too
freely or do not operate under
a load
Hydraulic system leaks Locate leaks and repair
Repair faulty component
See “Hydraulic Pump and Motor System”
on page 69. Disassemble drive valve and
clean load checks.
Screed not hot enough Ports at end of screed plugged Clear ports
Outside air too cold and/or windy Use propane heater while paving
Problem Possible Cause Corrective Action
Wavy surface (ripples) 1. Fluctuating head of materials Maintain full head of material
2. Finisher speed too fast Reduce speed with the pump speed
control lever
3. Excessive play in screed’s mechanical
connection
Replace attaching pullarm bolt, one of
two rear bolts attached to screed and
depth adjustment assembly
4. Screed riding on lift cylinder Lower lift cylinder completely
Wavy surface (long waves) See Causes 1, 3, 4
5. Overcorrecting thickness control
screws
Make moderate corrections as seldom as
possible
6. Running hopper empty between loads Stop paver before head of material
reaches screed area
7. Sitting long period between loads Empty hopper completely if waiting period
lets asphalt cool
Tearing of mat (full width) See Cause 2
8. Screed plates worn or warped Replace wear plate
9. Cold screed Check ports in screed
Tearing of mat (center streak) See Causes 8, 9
10. Too little lead crown in screed Increase lead crown
Tearing of mat
(outside streak)
See Causes 8, 9
11. Too much lead crown in screed Decrease lead crown
12. Screed extensions adjusted
incorrectly
Raise extension leading edge
Courtesy of Machine.Market
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