
225
WEBM1000 Maintenance and Lubrication Section (Pipelayer Attachment
Kit)
3. Remove filter (1, 2, and 4).
Note: Remove case drain hydraulic filter (1).
Discard
the used filter. Filter (1) must be removed for
access to hydraulic system filter (2). Replace both of
the filters at the same time.
4. In
spect the seal on the filter housings for filter (1,
2, and
4). If the seals are damaged or worn,
install new seals. Install a new filter element into
the filter housing for (1, 2, and 4).
Hydraulic System Oil Level –
Check
At operating temperature, the hydraulic tank is
hot and under pressure. Hot oil and components
can cause personal injury. Do not allow hot oil or
components to contact skin. Remove the filler
cap only when the engine is stopped, and the
filler cap is cool enough to touch with your bare
hand. Remove the filler cap slowly in order to
relieve pressure.
The hydraulic tank is on the right rear corner of the
machine.
301
Illustration 301
Hydraulic Tank
1. The counterweight should be fully retracted
when you check the oil level.
2. Maintain the oil level
to the “FULL” mark in sight
gauge (1).
3. If
the hydraulic system requires additional
hydraulic oil, re
move filler cap (2) and add oil.
Clean filler cap (2) and install filler cap (2).
Hydraulic System Oil
Sampling
Refer to the tractor’s operation and maintenance
manual for the specific procedures regarding
Hydraulic System Sampling.
Oil Filter Inspection
302
Illustration 302
Oil filter.
Use a Filter Cutter - CAT# 4C-5084, or similar to cut
the filter element open. Spread apart the pleats and
inspect the element for metal and other debris. An
excessive amount of debris in the filter element can
indicate a possible failure.
If metals are found in the filter element, a magnet
can
b
e used t
o differentiate between ferrous metals
and nonferrous metals. Ferrous metals would
indicate wear on steel parts and on cast iron parts.
Non ferrous metals would indicate wear of the brass
or aluminum part of the hydraulics such as main
bearings, pump sleeves, etc.
Small amounts of debris may be found in the filter
elem
ent.
This could be caused by friction and
normal wear. Consult your Caterpillar dealer in order
to arrange for further analysis if an excessive
amount of debris is found.
Using an oil filter element that is not recommended
by
Caterpillar could result in sever
e damage. This
could result in larger particles in unfiltered oil. These
particles could enter the system and cause damage.