Flowserve Limitorque QXM Linear Base - Manual (Page 7)

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MXa/QXM Linear Base FCD LMENIM2315-00 – 6/14
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2 Reassembly Instructions
2.1 LB Reassembly
2.1.1 Reassembly of Optional LB Subassembly
See Figure 1.4 for the following steps.
NOTE: Steps 1 and 2 are for the LB2 assembly only. The LB2 anti-rotation base consists of three parts: the base (#1),
the nut (#14) and the O-ring (#15). The LB1 requires only one part for the anti-rotation base (#1).
Step 1
LB2 assembly only.
Lightly lubricate O-ring (#15) and carefully slide O-ring over anti-rotation nut (#14) and into the O-ring groove.
Step 2
LB2 assembly only.
Align anti-rotation nut (#14) lugs with key slots in the anti-rotation base (#1), and slide nut into the base until seated in
base.
Step 3
Generously lubricate shaft (#2) threads and slots and anti-rotation base (#1) or nut (#14) internal lugs with Mobil SHC
220 Mobilith grease. Align the shaft key slots with the anti-rotation base (#1) lugs or (#14) nut lugs, and slide the shaft
into the anti-rotation base (#1) from the bottom side.
NOTE: Before mounting the bellows boot per the following steps, 4 thru 6, the thrust base assembly may be mounted
per section 2.1.2. Mounting of the thrust base will hold the shaft in place for assembling of the bellows boot.
Step 4
Slide the big end of the bellows boot (#7) over the bottom of the shaft (valve side), and push boot onto the anti-rotation
base boss, making sure that the boot is completely pushed onto the base or nut boss.
NOTE: The mating boss for the boot is part of the base (#1) on LB1 and is part of the nut (#14) on the LB2 assembly.
Step 5
Slide the big clamp (#7) over the boot and up to the mating bellows and base boss. Rotate clamp screw for access thru
one of the two slots in the bottom of the anti-rotation base. Secure boot to the base with clamp by tightening the clamp
to 8–10 inch-pounds.
Step 6
Gently push the bellows boot (#7) onto the smaller OD on the shaft (#2). Slide the small clamp over the shaft and boot.
Secure boot to the shaft with clamp by tightening the clamp to 8–10 inch-pounds, ensuring boot and clamp are on the
smaller OD of shaft.