Flowserve MX-85 Actuator - Manual (Page 56)

Flow Control
Limitorque Actuation Systems
48 MX-85/140 Maintenance and Spare Parts FCD LMAIM1341-00
4.8.2 Remounting
STEP 4
NOTE: Lightly lubricate quad rings/O-rings before
remounting subassemblies.
Fit the handwheel worm gear assembly (#12) into
the top of the actuator housing. Slowly rotate the
assembly as it approaches its lower position in the
actuator; this will allow the quad ring (#12-3) to
ease over the end of the drive sleeve avoiding dam-
age to the quad ring.
4 Quad ring
(12-3)
located
inside hand-
wheel worm
gear
12
STEP 5
NOTE: Retainer plate (#1-32) may sit slightly above
actuator housing until screws are retightened.
c WARNING: The MX requires precaution to pre-
vent damage to the declutch latch. This applies
while installing the handwheel worm gear
assembly (#1-35), retainer plate (#1-32) and
screws (#1-33). If the unit is in the clutched
position (handwheel operation) during assem-
bly, a lug-to-lug condition can result between
the clutch and the handwheel worm gear.
In this situation the latch will be compressed
and damaged when the plate screws are
tightened.
Assure the clutch lugs are fully engaged to the
bronze gear lugs before installing the handwheel
worm gear assembly. The latch must be rotated
down and not holding the clutch off the bronze
worm gear. When installing the handwheel worm
gear, ensure these lugs fall between the clutch lugs.
This position will allow the handwheel worm gear
lugs to be fully engaged to the clutch lugs. The final
step is to install the retaining plate and socket head
cap screws.
Place the retainer plate (#1-32) on the top of the
actuator housing. Align the mounting taps, and
secure with screws (#1-33).
5
1-32