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Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
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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.
#19-2 Clutch Bearing
Special tool used in
place of motor for
cut-away view only
#21-1 Clutch Latch
Figure 19: Cut-away view of L120-85 actuator with Clutch Latch positioned on face of Clutch Bearing
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 Assembly (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 Bearing (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
forcing 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)