GENERAL MAINTENANCE PROCEDURES.
All unit level maintenance shall be performed in
accordance with good and safe shop practices. Observe
the following general instructions and requirements when
performing paving machine components maintenance.
Areas of the paving machine exposed to
paving material buildup require cleaning
prior to disassembly. Use hammers,
chisels, and scrapers to remove thickest
sections of buildup. If available, use
heater gun to soften deposits adhering to
components; remove softened buildup
with putty knife.
When heating paving
material, keep second person with fire
extinguisher at hand and avoid
overheating. If heater gun is not available,
use solvent or fuel washdown system to
soften paving material.
Thoroughly clean hydraulic hoses and
fittings before disconnecting. Always plug
or cap off disconnected fittings to prevent
dirt and contaminants from entering the
system. Failure to clean hoses and fittings
and to plug or cap open fittings may result
in hydraulic system contamination and
Always tag mating connectors and fittings
before disconnecting. Tagging of mating
connectors and fittings will ease
reassembly and reduce assembly errors.
Use a backup wrench when loosening or
tightening inline fittings. Using a backup
wrench will prevent unnecessary damage
to attached lines and/or smaller fittings.
When removing tie wraps from hoses and
wiring, note or mark locations and anchor
points. The proper location and
installation of tie wraps will prevent undue
chafing of hoses and wiring.
Thread locking compound is used with
most threaded fasteners. If a threaded
fastener will not break loose, heat
threaded area of fastener from 500° to
6000F (2320 to 315°C) with heater gun. If
the special solvent used to remove thread
locking compound from screw threads
fails to remove buildup, discard fastener.
Discard all removed gaskets, seals,
preformed packings, self-locking nuts,
lockwashers, spring pins, and deformed
Inspect all removed components for
obvious wear or damage. Replace all
worn, bent, broken, or otherwise damaged
Inspect all removed fasteners for thread
damage. If thread damage is found,
replace fastener. Replace flat washers if
galled or bent. Use screw extractor set
(Item 15, Appendix E) to remove broken
studs or screws.
Clean painted surfaces thoroughly before
repainting. Do not paint over rust or
corrosion. Do not paint bearings or other
parts that require surface lubrication.
Reference TM 430139 for equipment
Torque values cited in the text apply to
modified SAE Grade 8 fasteners at
required clamping loads.
Use only authorized replacement parts.
Refer to TM 5389537324P, Repair Parts
and Special Tools List (RPSTL) for
authorized replacement parts.
Observe all warnings and cautions. Wear
protective clothing and equipment as
specified. Observe the Safety and Hazard
Warnings provided in TACOM technical
bulletin TB 43-0216.