Farr 80-0420-16, Technical Manual

Page: 140 / 165

KT5500 5-
1
/
2
” T
ong
& CLInCHER® B
aCKup
S
ECTIon
C
onTEnTS
7.12
T
ECHnICaL
M
anuaL
H
yDRauLIC
M
oToR
I
nfoRMaTIon
WARNING:
RINEER RECOMMENDS FOLLOWING ALL STANDARD SHOP SAFETY PRACTICES SPECIFICALLY INCLUDING WEARING OF EYE PROTECTION.
17 21
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23
24
18
19
20
7
1) Remove the rotor.
2) Remove both the rotor
and stator vanes.
3) Note: On motors
manufactured prior to
1987, rotor vane slots and
rotor vanes should be
numbered so that vanes
can be reassembled in the
same vane slot.
Inspect all springs and
seals. We recommend
replacement of all seals
and springs whenever the
motor has been
disassembled.
Inspect all parts and
replace any parts which
obviously show excessive
wear or damage.
VANES: Normal wear results
in slight flattening of vane tips
which does not impair motor
performance. Replace vane if
radius is reduced by 50%.
Clearance between the rotor
vane and rotor vane slot
varies with the vane
selection. The design allows
the vane to "lean" slightly in
the slot, providing the
required mechanical seal.
Note: Measure the rotor
and stator length to the
fourth decimal point and
supply measurement when
ordering rotor, stator, or
vanes.
STATOR: Normal wear results
in polishing of cam form which
does not impair motor
performances.
Noticeable wear may be
apparent along the corner of
one side of the staor vane
slot. This does not necessarily
require replacement of the
stator, but may slightly affect
volumetric efficiency.
ROTOR: Normal wear
results in polishing of rotor
faces which does not impair
motor performance.
Examine the rotor vane
slots closely. Polishing
down in the slots is normal,
but if there is any indication
of a "pocket" forming in the
wall of the slot, the rotor
should be replaced.
PLATES: Normal wear
results in marking of timing
plates which does not
impair motor performance.
Replacement of the timing
plate is required if any
smearing, galling, or heat
cracks are present.
INSPECTION AND REPLACEMENT
OF PARTS