Filter Drier - Hitachi SAMURAI Series Service Manual

3. Servicing
Cycle components

3.5.7 Filter drier

There are two possible main maintenance operations to do with the filter drier: the substitution of the inner core due to its
adsorption saturation or the substitution of the whole unit due to some damage.

Solid core substitution
Follow the next steps in order to proceed to replace the inner core of the filter drier:
1 Remove the 8 screws (1) that fixes the top cov-
er (2). Carefully, remove the spring (3), the top
cover gasket (4), the wing nut (5) and the lock
washer (6).
2 Retire the top plate (7) and then the felt gasket
(8)
3 Take the solid core (9) out and proceed to the
replacement.
4 When reassembling after replacing the solid
core, perform the procedure in the reverse order
than removing.
N O T E
At reassembling, oil or grease the top cover gasket
and the thread of the cover screws.

Filter drier unit replacement
Replace the filter drier unit if any leakage or malfunction is detected. Proceed following the steps explained below:
1 Protect the surroundings of the unit from the heat of the blowtorch.
2 Remove the brazed parts using a blowtorch and previously cooling the pipe side and the filter drier unit with wet cloth
in order to avoid brazing material enter inside the pipes.
RHME
C A U T I O N
After blowtorch operations, filter drier and the surroundings may be too warm. Take special care to use insulation
protection.V
91
SMGB0082 rev.1 - 07/2015
1 2
Brazed parts
3 4 5 6 7 8 9
RCME
Brazed parts
3