Flowserve L120-85 Actuator - Manual (Page 32)

2. Before shimming the Handwheel Assembly and to assure proper
Handwheel Lug (piece 3-1) engagement with the Clutch (piece
19-1), push the Declutch Lever into the MANUAL mode until
Latch 32-1 is engaged with Clutch Bearing (piece 19-2) as
shown in figures 18 and 19. Once Clutch is engaged, leave the
Declutch Lever in the declutch position during the shimming
procedure.
Figure 19: Cut-away view of L120-85 actuator with Clutch Latch
positioned on face of Clutch Bearing
#19-2 Clutch Bearing
Special tool used in
place of motor for
cut-away view only
#21-1 Clutch Latch
3. Now insert the Handwheel Shaft Assembly (piece #s 2, 3-1, 3-2
and 3-3) (without the parts of the Handwheel Shaft Assembly
removed in step 1) into the actuator (see figure 18). Assure the
Handwheel Lug (piece 3-1) is fully seated into the Clutch Assem-
bly (piece 19) by rotating the Handwheel Shaft Assembly until
you feel it seat into engagement with the Clutch (piece 19-1).
4. After Clutch Latch (piece 32-1) is positioned on the Clutch Bear-
ing (piece 19-2) as described in step 2 and the Handwheel Shaft
Assembly is inserted into the actuator Housing as described
in step 3, insert the Handwheel Shaft Washer (piece 52) (see
Figure 22) into the actuator Housing.
5. Once the Handwheel Shaft is installed and fully seated, use a
feeler gauge to measure the gap that is identified as Dimension
“A” in Figure 20. Dimension “A” must be within the range of
.000 to .180 inches (.00 mm to 4.57 mm) prior to shimming.
If dimension “A” is not within the range of .000 to .180 inches
(.00 mm to 4.57 mm), the assembly is incorrect and Steps 1
through 5 should be repeated.
NOTE: When measuring the gap, verify that Spring (piece 3-2) is
at the “installed height” that is determined by the Handwheel Shaft
(piece 2), Handwheel Lugs (piece 3-1) and Roll Pin (piece 3-3). If
Spring (piece 3-2) is compressed an additional amount due to forc-
ing the Handwheel Shaft into the Housing the gap measurement will
be incorrect (see Figure 18).
Figure 20: Gap between Housing face and Handwheel Bushing
shown as dimension “A”
Shoulder on Handwheel
Shaft that positions shaft
when shimmed
#52 Handwheel
Shaft Washer
#2 Handwheel Shaft
#4-1 Handwheel Bushing
(without O-rings)
Dimension "A"
(Housing face
to Bushing)
#1 Housing face
(Handwheel end of
actuator)
6. Select a shim thickness to satisfy the following chart
(each shim is .030"):
Table 4: Gap “A” shim thickness selection chart
Shim Thickness for Gap “A”
Dimension “A” Nominal shim
thickness at gap “A” Greater than Less than or equal to
0" 0 mm .030" 0.76 mm .03" 0.76 mm
.030" 0.76 mm .060" 1.52 mm .06" 1.52 mm
.060" 1.52 mm .090" 2.29 mm .09" 2.29 mm
.090" 2.29 mm .120" 3.05 mm .12" 3.05 mm
.120" 3.05 mm .150" 3.81 mm .15" 3.81 mm
.150" 3.81 mm .180" 4.57 mm .18" 4.57 mm
7. Install O-rings (piece 43 and 44) on Bushing (piece 4-1).
Install the proper thickness of shims, based on step 6, on the
Handwheel Shaft (piece 2). The shims must rest on the major
shaft diameter and be held in place by installing the Handwheel
Bushing (piece 4-1) with O-rings (piece 43 and 44). The shims
that fill gap “A” must lie between the Handwheel Bushing (piece
4-1) and the Handwheel Shaft Washer (piece 52). Refer to figure
18 for assembly parts drawing.
8. Install Handwheel Spacer (piece 4-2) and Retaining Ring (piece
4-3) on the Handwheel Shaft (piece 2) and insert Handwheel
Shaft Assembly into actuator Housing.
9. Install the remaining shims (that were not used at gap “A”)
over the Handwheel Spacer (piece 4-2) and against Handwheel
Bushing (piece 4-1). The proper thickness for shims at gap “B”
is determined based on the total shim thickness for gap “A” and
Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-00 – 11/05
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