Operation 19 - Change Hydraulic And Transmission Oil Filters - New Holland T7030 Operator's Manual

OPERATION 19
CHANGE HYDRAULIC AND TRANSMISSION
OIL FILTERS
The type of hydraulic filters is dependent upon tractor
specification. All filters are installed under the
right-hand side of the cab floor.
There are two filters, the main filter (3) which has a
replaceable cartridge, and the charge filter (1) which
is a disposable type.
Before changing a disposable filter, clean the area
around the mounting plate and filter, then unscrew
and discard safely.
Clean the inlet channel and the face of the filter
mounting. Smear clean oil around the rubber seal of
the new filter and install on the tractor.
Screw up until the faces just meet, then tighten a
3
further / of a turn. Do not overtighten.
4
Both types of main filter (3) have a replaceable
cartridge.
In Figure 64, access to the cartridge is gained by
removing the three retaining nuts (2) on the filter
head. Ensure filter cover is clean before installing the
new cartridge, lightly oil the sealing ring before
re--assembling to the tractor. Do not overtighten the
retaining nuts.
Before changing the main filter cartridge in
Figure 65, first release the air bleed valve (2) by
unscrewing fully. This will allow air into the filter so
that most of the oil can drain back into the hydraulic
system.
Wait a few moments and then remove the 19mm plug
(5) from the filter casing and allow the oil to drain out.
Using a 41mm socket or ring spanner, remove the
filter support plate by turning approximately 45° to
the left. Both plate and filter can now be removed
from the tractor.
Ensure the support plate is clean before installing the
new cartridge, lightly oil the sealing ring and refit the
assembly to the tractor. Ensure the plate locks into
place and the lug (4) aligns correctly with the arrow
on the filter casing.
SECTION 4 - - LUBRICATION AND MAINTENANCE
64
65
4--35