87U/88U Actuator; Mounting 4700P/4800P And 4700E/4800E On Series 87U/88U Actuators; Mounting Parts Reference 87U/88U - GE Masoneilan 4700P Maintenance Manual

87U/88U Actuator

Mounting 4700P/4800P and 4700E/4800E on Series 87U/88U
Actuators
1. Mount lever (1U) between two jam nuts (11U) on valve stem (Figure 7).
2. Attach turnbuckle screw (101) to lever (1U).
3. Assemble jam nut (107) to clevis (102). Assemble clevis to turnbuckle screw (101).
4. Install input shaft (42) in post hub with a washer (40) on each side of hub and
retaining ring (37) on cam end.
5. Attach back lever (103) to shaft with hex head screw (38) and lockwasher (39).
6. Attach bracket (5U) to positioner with screws (29) and lockwashers (30).
7. Mount positioner and bracket assembly to actuator yoke using cap screws (12U)
and lockwashers (30).
8. Attach clevis (102) to back lever (103) using clevis pin (104), retaining clip (105), and
washer (122).
9. Mount cam (26) on input shaft with desired lobe against cam follower using screw
(28) and washer (27).
Table 2: Mounting Parts Reference 87U/88U
Ref.
No.
1U
5U
11U
12U
26
27
28
29
30
26 | =GE Oil & Gas
Description
Lever
Bracket
Nut
Cap Screw
Cam
Washer
Pan Head Screw
Screw
Lockwasher
Ref. Description
No.
39 Lockwasher
40 Washer,.531 ID
42 Input Shaft
101 Turnbuckle Screw
102 Clevis
103 Back Lever
104 Clevis Pin
105 Retaining Clip
107 Locknut
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