Page Issue 01
Chapter - Scheduled Maintenance
7:7
VT551 - Maintenance
Please refer to the Operator’s Guide Section 6 for the Routine Maintenance Schedules.
The following covers items not included in the above guide.
HYDRAULIC OIL RETURN FILTER
The filter should be changed every B Service, however there is an integral filter indicator on the side of
the filter head and, should this indicate red whilst the suction fan is operating, i.e. body raised, then the
filter is contaminated and requires changing at an earlier interval.
HYDRAULIC OIL RESERVOIR
Note: The filters can only be changed when the tank has been drained.
RENEWING THE RETURN FILTER
Unscrew cover (A) with a suitable spanner and lift out the cartridge element (B). Refit cartridge and screw
on the cover, some force will be required to compress the carriage retaining spring.
SYSTEM DRAINING
The oil can be drained by opening the tap
(G) and draining into a suitable receptacle.
RENEWING THE SUCTION FILTER
Change the filter whilst the system is empty.
The filter is changed as follows:
Remove the hydraulic hoses (D) to gain
access to the filter element (E). Replace
element and reassemble.
SYSTEM REFILLING
The system capacity dry is 80 litres. Refer to
Chapter 6 of the Operator’s Guide detailing
the correct oil level in the reservoir.
This should only be changed when the oil is cold, as the system could be
pressurised. Leave for 60 seconds after stopping for any pressure to be
dissipated before removing the return filter.
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