Emerson Fisher 785C, Instruction Manual

Page: 28 / 72

Instruction Manual
D104483X012
785C Actuator
May 2022
28
Table 10. Tie Bolt Torque
(1)
BOLT DIAMETER TIE ROD MATERIAL NUT MATERIAL
TORQUE
N
w
m lbf
w
ft
M10 x 1.5
ASTM A320-L7 ASTM A194 GR 7 S3
40 30
M12 x 1.75 70 52
M16 x 2 160 118
M20 x 2.5 320 236
M24 x 3 550 406
M27 x 3 800 590
M10 x 1.5
ASTM A320 B8M CL-2 EN ISO3506-2 A4-80
30 23
M12 x 1.75 58 43
M16 x 2 130 96
M20 x 2.5 250 185
M24 x 3 440 325
M27 x 3 535 395
1. For other bolting materials or lubricants contact your Emerson sales office for torque information.
Lubrication
The type of grease used and recommended for lubrication purposes at normal operating temperature, is described in
table 11.
Table 11. Recommended Lubricant
MANUFACTURER AGIP
TYPE GR MU/EP2
NLGI GRADE 2
WORKED PENETRATION (DMM) 280
DROPPING POINT ASTM (
5
C) 185
ISO GRADE X2
EQUIVALENT GREASE
ESSO BEACON EP2
BP GREASE LTX2
SHELL ALVANIA GREASE R2
ARAL ARALUB HL2
CHEVRON DURALITH GREASE EP2
CHEVRON SPHEEROL AP2
TEXACO MULTIFAK EP2
MOBILPLEX 47
PETROMIN GREASE EP2
Check and Restore Manual Handpump Hydraulic Oil Level
During the actuator operation, the oil tank has to be closed (not in connection with the atmosphere). To avoid
cavitation, it is necessary to proceed as follows to check the oil tank oil level.
Refer to figure 45 and 46 unless otherwise indicated:
1. Remove the oil tank dipstick (key 2751-1.7).
2. Move the actuator into the open position.
3. Check that the oil level in the oil tank (key 2751-4) corresponds to the maximum level mark of the dipstick
(figure 22).
4. With the dipstick still removed, move the actuator to the closed position using the handpump.