The Cooler For The Hydraulic System; Hydraulic Filter; Hydraulic Lines - Husqvarna ZTH5223 Workshop Manual

The Cooler for the Hydraulic System

Removing
1. Remove the right rear wheel.
2. To eliminate any excess pressure, remove then replace the hydraulic tank cap.
3. Loosen the hose clamps (16) but leave the hoses attached to the cooler.
4. Remove the bolts (14), spacers (15) and nuts (12).
5. Hold the bottom of the cooler higher than the hydraulic tank and disconnect the hoses (27, 28)
from the cooler.
Fitting
The fitting procedure is the reverse of the removal procedure.

Hydraulic Filter

Use genuine Husqvarna filters only. The use of pirate parts can invalidate the warranty.
Changing Filters
When changing the oil in the hydraulic tank, change the filter also. Dispose of the used filter in accordance
with the environmental regulations relating to engine oil filters.
An oil filter chain may be used for removal but not for fitting.
1. Screw the filter (3) from the filter head (4) - refer to the "ZTH hydraulic system" diagram.
2. Smear the new filter's gasket with clean hydraulic oil.
3. Screw on the new filter until the gasket contacts the filter head.
4. Manually turn the filter a further one and a half turns.
Removing
1. Drain the hydraulic tank as per the instructions given above.
2. Disconnect the hoses (25, 26) and "O" rings (33) from the filter head (4).
3. Remove the bolts (10) and washers (11). Remove the entire filter unit.
Fitting
The fitting procedure is the reverse of the removal procedure.
Use new "O" ring flares.

Hydraulic Lines

Two types of hydraulic lines are used - high pressure hoses and pipes. For pipes (earlier mower models),
the fitting instructions given below apply (they do not need to be observed for mowers with hyrdaulic hoses
between pumps and motors).
HYDRAULIC SYSTEM
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