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Maintenance
LeeBoy 8608 Commercial Paver 5-15
Torque Hub Hydraulic Motor Torque Hub Hydraulic Motor
Gear AdjustmentGear Adjustment
Torque hub hydraulic motors are
calibrated and set at the factory. These adjustment
should only be performed by an authorized LeeBoy
dealer. Work not performed by an authorized dealer
can damage machine and void the warranty.
The low gear adjustment must be made to the slow
side drive motor only. The low gear adjustment screw
is located on the bottom of the drive motor. Make only
small adjustments at a time.
Your authorized LeeBoy dealer will perform the tracking
adjustment on the high side gear by adjusting the screw
on the top of the hydraulic motor. This adjustment on
the motor must be screwed in to equalize track speed.
Your LeeBoy dealer will perform the following
procedure to adjust either gear:
1. With paver running, push the 2-Speed switch.
2. Adjust screw (on bottom of the hydraulic motor for
low gear; on top for high gear) until you feel back
pressure on the adjustment screw. This indicates
the correct adjustment is close.
3. Finalize adjustment by making a one-quarter (1/4)
turn at a time until the correct adjustment is accom-
plished. Recheck tracking.
NOTE: If hydraulic motor has not been previously
set, ten revolutions of the adjustment screw may be
required before noticing any difference in travel.
ENGINE MAINTENANCE
The LeeBoy 8608 Commercial Paver features the latest
in emissions compliance and electronically-controlled
engine technology. Tier 4 engines comply with emission
requirements established by the U.S. Environmental
Protection Agency (EPA) to reduce diesel particulate
matter (DPM) and other toxins released into the air. As
part of the Clean Air Rules of 2004, the EPA requires
engine manufacturers to integrate controls into systems
that reduce exhaust emissions by 90 percent.
Advanced emission-control devices and low-sulfur fuel
requirements--only Ultra-Low Sulfur Diesel (ULSD) can
be used in these engines--combine with new after-
treatment methods such as Exhaust Gas Recirculation
(EGR), Diesel Particulate Filters (DPF), and Diesel
Oxidation Catalyst (DOC). This is described in more
detail on the following pages.
A common rail system optimizes combustion for a
durable, quiet and fuel-efcient, turbo-charged engine.
Preventive maintenance on the engine (and other paver
components) is important for longevity and avoiding
costly, unnecessary repairs. Even a dirty air lter
element can allow debris and dirt into the engine that
can cause major problems and costly repairs in time,
so be sure to follow the maintenance schedule on Page
5-5. Change oil and lters according to the maintenance
schedule, keep uids full, adjust and replace fan belt
(when needed), and inspect/repair hoses to reduce
wear and tear on the engine.
You can access the engine and other components
via the access panels on each side of the paver or
by pivoting the hood. (Page 5-6) The maintenance
procedures on the following pages are most often
required for the engine. Refer to the Engine Operator’s
Manual included with your paver for additional
information and procedures.
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