7 MAINTENANCE
81
VT-70 High Output US ISO O&M
0404-853 2019-09
7.8 Hydraulic Filter Change
The hydraulic filters should be changed every 250 hours. Hydrostatic components
require extremely clean oil in order to have a long service life. Use caution when
changing the hydraulic filters. Before beginning the procedure, make sure the
machine is in a clean working environment. Take any necessary measures to pre-
vent dirt or debris from entering the hydraulic system.
To change the hydraulic filters:
1. Shut the machine down according to the procedure in section 5.13.
2. Allow the machine to cool, then release any residual pressure in the
hydraulic system by following the procedure in section 4.7 of this manual.
3. Raise the hood, open the side panels and pivot the cooler to access the
hydraulic filters (items 2, fig. 7.7-2).
4. Clean around the filters, then thread the filters off and replace them.
Dispose of the used filters according to local mandates.
5. Reverse step 3 to complete the procedure.
Note: High flow equipped machines include a filter in the high flow auxiliary cir-
cuit case drain line. It protects the main hydraulic system in the event of cata-
strophic failure in a high flow attachment. This filter is designed to last the life of
the machine unless a high flow attachment equipped with a case drain has a
drive motor failure during use. (item 3 fig. 7.7-2)
Note: Should a hydraulic hose or fitting need to be removed for maintenance or
service, always inspect it for damage prior to re-installation. If none is found it
may be reused; if damaged, replace it.
7.9 Accessory Belt
The engine uses a belt to drive acces-
sories. The belt on the VT-70 High
Output should be visually inspected
every 250 hours for tension, condition
and presence prior to operation.
To check / tension the belt(s):
1. Shut the machine down according
to the procedure in section 5.13,
allow the machine to cool.
2. Raise the hood, open the side
panels and pivot the cooler at the rear of the machine.
Note: You will need to remove the fasteners securing the belt cover, then remove
the cover itself to inspect the belt.
3. Visually inspect the belt (or belts) to make sure it is present, tight around
the pulleys and in good condition. Reverse step 2 to reinstall the belt cover
and return the machine to operating condition.
7.9-1
To Next Page
Loading...
