Flowserve L120-85 Actuator - Manual (Page 33)

gap “B” combined being .18 inches (4.57 mm) total. See Figure
20 and Table 4.
Figure 21: Shimming parts and their order of assembly
#6-1 & 6-2
Shims
#6-1 & 6-2 Remaining Shims
#4-1 Handwheel
Bushing
#44 O-ring
#43 O-ring
(not shown)
#4-2 Handwheel
Spacer
#52 Handwheel
Shaft
Washer
Figure 22: Shim location for gap “B” dimension/
#5 Handwheel
End Cap
#42-4 Gasket
#2 Handwheel Shaft
#4-1 Handwheel Bushing
#1 Housing face
(Handwheel end of actuator)
#4-2 Handwheel
Spacer
#Shims for
gap "B"
Shims for gap "A"
#4-3 Retaining Ring
#44 O-Ring
#43 O-Ring
#52 Handwheel
Shaft Washer
Table 5: Gap “B” shim thickness selection chart
Shim Thickness for Gap “B”
Shim Thickness
Used at gap “A” Required for gap “B”
.03" 0.76 mm .15" 3.81 mm
.06" 1.52 mm .12" 3.05 mm
.09" 2.29 mm .09" 2.29 mm
.12" 3.05 mm .06" 1.52 mm
.15" 3.81 mm .03" 0.76 mm
.18" 4.57 mm 0" 0 mm
10. Install Gasket (piece 42-4) and Handwheel End Cap (piece 5).
Secure these pieces with four Hex Head Cap Screws (piece
50-3) and Lockwashers (piece 50-4). Handwheel Shaft end play
can be examined but is not required. According to dimensional
tolerances, the Handwheel end play with proper shimming
techniques will be .000 to .034 inches (.00 mm to 0.86 mm).
11. When reassembling the thrust base, ensure EP-0 lithium base
lubricant is replaced.
8.2 Verifying Handwheel
Operation
After your actuator is completely assembled, test the Handwheel
for MANUAL operation. Put the Declutch Lever in MANUAL mode,
turn the Handwheel in either direction to ensure MANUAL opera-
tion is turning the Drive Sleeve mechanism. If there is resistance to
turning the Handwheel, the Declutch Lever Assembly is not properly
disengaging the Motor Cam from the Clutch Pinion Assembly. If
this occurs, review the Handwheel shimming procedure to ensure
Handwheel shimming is accurate. If you determine the shimming
procedure was correctly followed, call the Limitorque Service
Department for further assistance.
8.3 Thrust Base Assembly
and Shimming
NOTE: The piece numbers below are referenced on the Thrust Base
Group illustrated parts breakdown.
1. Install one set of Thrust Washers (piece 104) and Thrust Bearing
(piece 103) on each end of Stem Nut (piece 101). Ensure that
the Thrust Bearing (piece 103) is sandwiched between the two
Thrust Washers (piece 104) on either end of the Stem Nut as
shown in the drawing.
2. Install the two Quad Rings (piece 107) in the seal grooves on the
Stem Nut and lightly grease the seal and stem nut journal to aid
in installation.
3. Place the Stem Nut into the Thrust Base Housing (piece 100)
taking care not to damage the Quard Ring.
4. Install O-ring (piece 106) on the Thrust Base Plate (piece 102)
and lightly grease the seal and journal to aid in installation.
5. Test fit Thrust Base Plate (piece 102) onto the Stem Nut and
Thrust Base Housing taking care not to damage the two seals.
Do not install the Shim Set (piece 108) at this time. It may be
necessary to install several Cap Screws (piece 112) to temporar-
ily secure the assembly.

Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-00 – 11/05
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