Flowserve Limitorque QXM Linear Base User Manual
USER INSTRUCTIONS
MXa/QXM Linear Base
FCD LMENIM2315-00 – 6/14
Installation
Operation
Maintenance
Experience In Motion
MXa/QXM Linear Base FCD LMENIM2315-00 – 6/14
Contents
1 Subassembly Instructions 3
1.1 LB Subassembly, QXM and MX Units 3
1.1.1 Optional LB Subassembly Removal From QXM and MX Units 3
1.1.2 Optional LB FA or EN (F) Base and Stop Nut Subassembly 4
1.1.3 Removal of Thrust Base Subassembly From LB Assembly 5
1.1.4 Disassembly of LB Subassembly 6
2 Reassembly Instructions 7
2.1 LB Reassembly 7
2.1.1 Reassembly of Optional LB Subassembly 7
2.1.2 Reassembly of Thrust Base to LB Subassembly 8
2.1.3 Reassembly of Optional FA/EN (F) Base to LB Subassembly 8
2.1.4 Assembly or Adjustment of Optional Stop Nut for LB Subassembly 10
2.1.5 LB Lubrication 11
2.1.6 Reassembly of QXM or MX Actuators to LB/Thrust Base Assembly 11
Figures
Figure 1.1 – LB Subassembly Removal From Actuator 3
Figure 1.2 – Optional LB FA/EN (F) Base and Stop Nut Subassembly 4
Figure 1.3 – Thrust Base with LB Assembly 5
Figure 1.4 – LB Assembly 6
Figure 2.1 – LB1 Subassembly Cross-Section 9
Figure 2.2 – LB2 Subassembly Cross-Section 9
Tables
Table 1.1 – Optional LB1 and LB2 Subassembly 4
2
MXa/QXM Linear Base FCD LMENIM2315-00 – 6/14
1 Subassembly Instructions
1.1 LB Subassembly, QXM and MX Units
1.1.1 Optional LB Subassembly Removal From QXM and MX Units
Step 1
c WARNING: Hazardous voltage! Turn off all power sources to actuator before removing actuator from LB assembly.
Power sources may include main power or control power. If necessary, disconnect incoming power leads L1, L2,
L3 and control wiring from terminal block.
Step 2
Remove the four bolts (#5) that secure the LB assembly to the actuator base plate and slide down the LB subassembly
until the LB shaft clears the unit actuator.
Step 3
Remove gasket (#5) and slide gasket off thrust base assembly or remove from actuator baseplate.
Step 4 (QXM actuators only)
Remove pilot spacer (#16-16) by sliding over LB shaft.
NOTE: Pilot spacer (#16-16) is used to pilot an ISO thrust base assembly to the QXM adapter plate. If an MSS thrust
base assembly is used on a QXM actuator, the pilot spacer is not required. The MX units do not require this pilot spacer
in this location on any assemblies as long as the MX base plate and thrust base are of the same type, i.e., ISO/ISO or
MSS/MSS.
Figure 1.1 – LB Subassembly Removal From Actuator
NOTE: The thrust base assembly is considered part of the LB subassembly. For this procedure the thrust base parts
are called out as item number (#5) in the figures. Other item numbers may be used in other manuals. For disassembly
and reassembly of the thrust base assembly (#5), refer to the QXM or MX manuals, (QXM) LMENIM3314 section 3
and (MX) LMENIM2306 section 3.
3
flowserve.com
MXa/QXM Linear Base FCD LMENIM2315-00 – 6/14
1.1.2 Optional LB FA or EN (F) Base and Stop Nut Subassembly
NOTE: The EN (F) base meets standard DS/EN 15714-2 but has the same mounting as an ‘F’ ISO style base.
Step 1
(Optional Stop Nut if supplied) Remove set screw (#13) and spin nut (#12) off shaft.
NOTE: Optional nut may only be used when LB is mounted to a QXM, MX-10 or MX-40 actuator.
Step 2
(Optional FA/EN (F) base) Remove the four bolts (#11) that secure the optional base to the anti-rotation base (#1) and
slide the base off over shaft (#2) and bellows (#7).
Table 1.1 – Optional LB1 and LB2 Subassembly
ITEM NUMBER DESCRIPTION QTY. NOTES
1 ANTI-ROTATION BASE 1
2 SHAFT 1
3 THRUST NUT 1
4 SOCKET HEAD CAP SCREWS 4
5 THRUST BASE ASSEMBLY 1
6 GASKET 1
7 BELLOWS AND TWO CLAMPS 1
8 GREASE FITTING 1
9 PIPE PLUG 1
10 OPTIONAL FA OR EN (F) BASE 1
11 SOCKET HEAD CAP SCREWS 4
12 OPTIONAL STOP, HW CLOSED 1 QXM, MX-10 AND MX-40 ONLY
13 SET SCREW, OPTIONAL STOP 1 QXM, MX-10 AND MX-40 ONLY
14 ANTI-ROTATION NUT 1 LB2 ONLY
15 O-RING 1 LB2 ONLY
16-16 SPACER, PILOT 1 SEE NOTES FOR USAGE
PART OF THRUST BASE ASSEMBLY, BUT MACHINED
TO MATE WITH LB ASSEMBLY
Figure 1.2 – Optional LB FA/EN (F) Base and Stop Nut Subassembly
LB1 assembly shown in this figure.
4
Loading...