SECTION 24: LUBRICATION
2
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version – Rev.2 April 2016)
1. LUBRICATION
The efficiency and life expectancy of mechanical
equipment is largely dependent on proper
lubrication and servicing. All mechanical
components rely on a lubricating film between
moving parts to reduce friction, prevent wear
and oxidation. Proper lubrication also helps cool
the parts and keep dirt particles away from
mating surfaces. Efficient lubrication depends
upon using the right type of lubricant, at
specified intervals and by filling to correct
capacities. Past experience shows that many
service problems can be traced to an improper
lubricant or to incorrect lubrication procedures.
A comprehensive maintenance and lubrication
program is important to ensure the long service
life this vehicle was designed for and to avoid
costly repairs and associated downtime caused
by premature part failure.
A lubrication schedule is included in this section
to give the location of key service points on the
vehicle as well as the lubricant specifications for
each component to be serviced. Specific
instructions on how to check and service
different components are covered in their
respective sections in this maintenance manual.
The recommended lubrication intervals are
based on normal operating conditions and
mileage accumulation.
Shorten the intervals if your vehicle operates in
more severe conditions. Severe conditions
include heavy towing, high vehicle weight or
operation in mountainous areas. Some parts
and equipment referred to in this section may
not be installed on your vehicle. Check your
vehicle’s “Coach Final Record” for equipment
list.
Dispose of used lubricants and filters in an
environmentally safe manner, according to
federal and/or local recommendations.
2. LUBRICATION AND SERVICE SCHEDULE
Following this service schedule is the most
economical and easiest way to ensure your
vehicle performs at its best, safest and longest.
Also, unscheduled maintenance will be
minimized since inspection should expose
potential problems before they become major
ones.
2.1
FLEXIBLE HOSE MAINTENANCE
The performance of engine and equipment are
greatly related to the ability of flexible hoses to
supply lubricating oil, air, coolant, and fuel oil.
Maintenance of hoses is an important step to
ensure efficient, economical, and safe operation
of the engine and related equipment.
2.1.1 Hose
Inspection
Check hoses daily as part of the pre-starting
inspection. Examine hose for leaks, and check
all fittings, clamps, and ties carefully. Ensure
that hoses are not resting on or touching shafts,
couplings, heated surfaces including exhaust
manifolds, any sharp edges, or other obviously
damaging areas. Since all machinery vibrates
and moves to a certain extent, clamps and ties
can fatigue with time. To ensure proper support,
inspect fasteners frequently and tighten or
replace them as necessary.
2.1.2 Leaks
Investigate leaks immediately to determine if
fittings have loosened or cracked, and also if
hoses have ruptured or worn through. Take
corrective action immediately. Leaks are not
only potentially detrimental to machine
operation, but can also result in added expenses
caused by the need to replace lost fluids.
WARNING
Personal injury and/or property damage may
result from fire due to the leakage of
flammable fluids, such as fuel or lube oil.
2.1.3 Service
life
The limited service life of a hose is determined
by the temperature and pressure of the gas or
fluid within it, the time in service, its installation,
the ambient temperatures, amount of flexing,
and the vibration it is subjected to. With this in
mind, it is recommended that all hoses be
thoroughly inspected at least every 500
operating hours or after 15,000 miles (24 000
km). Look for surface damage or indications of
damaged, twisted, worn, crimped, brittle,
cracked, or leaking lines. Hoses having a worn
outer surface or hoses with a damaged metal
reinforcement should be considered unfit for
further service.
