Section 3: Assembly To Valves; Threaded Valve Stem; Locknut Lockpin Installation; Stem Nut Installation (Multi-Turn) - Emerson EIM E796 M2CP Installation And Maintenance Manual

Installation and Maintenance Manual
E2K-402-0817 Rev. 2

Section 3: Assembly to Valves

3.1

Threaded Valve Stem

3.1.1

Locknut Lockpin Installation

Figure 3
1.
2.
3.
NOTE:
Install Locknut Lockpin (56) into drilled hole to prevent Stem Nut Locknut from working
loose and turning. When installing, the Locknut Lockpin - it should extend 1/4 inch above
the Drive Sleeve assembly to allow for future removal.
3.1.2

Stem Nut Installation (Multi-turn)

1.
2.
Assembly to Valves
( 56)
( 55)
(52)
(54)
With actuator in place on valve, ensure proper flange mating and valve actuator
orientation.
Use a number 30 (.1285) drill bit to drill a hole 3/4 inch deep into the Drive Sleeve
assembly threads for the Locknut Lockpin (56) using groove in Stem Nut Locknut
as drill guide.
Install Locknut Lockpin (56) into drilled hole to prevent Stem Nut Locknut from
working loose and turning.
Unscrew Locknut (55) holding Bronze Stem Nut (54) and remove the Stem Nut and
Key (52).
Lubricate Stem and run Stem Nut down Stem to check acme thread fit, then
remove Stem Nut and set aside.
Section 3: Assembly to Valves
August 2017
6