Cashco Ranger QCT - Manual (Page 7)

IOM-Ranger 7
5 Short Bearing
4 Long Bearing
2
6
“Tongue” on plug (6) stub shaft, to en-
gage with stem assembly (7) “groove”.
“Flat” on cage (2)
“Vane”
on back
side of
plug (6)
Shown with plug (6) in
“closed” position
FIGURE 5
Back-end view of Cage/Plug Subassembly
Back-End
LN1 Trim
FIGURE 6
Lo-Noise Trim – LN2 through LN4
CAUTION
1. For ATC-FO Valve without handwheel (58) re move
slotted “C” washer from push rod (10) be tween lower
case (2) and the upper jam nut (43) before changing
supply pressure.
2. If the tongue and groove are not mated together, trim
parts could be damaged.
FIGURE 4: Quick Change Trim Parts
Seal
Gasket
TFE Seal
Ring
Cage
Tongue on
plug shaft
Groove on stem
Valve Body
Inconel X-750
Seal Ring
Plug rotated 180° from
closed position for dis as sem bly
Short
Bearing
Seat Retainer
Long Bearing
4. Slip bearings (4)(5) onto the plug (6) stub
shafts.
NOTE: Bearings (4) (5) are not the same length.
The shorter bear ing (5) fi ts the plug (6) stub shaft
that has the tongue end. See Figure 5.
5. Rotate plug (6) to the closed position. Ensure
that the plug (6) is fully pulled into the me-
chan i cal stop (5) on the cage (2). See Figure
7. Ensure that the closing torque is nil; i.e.
actuator assembly (AA) linkage is “loose” or
“slack”.
6. Insert the cage/plug subassembly (2)(4)(5)(6)
into the body (1). On 1-1/2" and 2" sizes with
lo-noise inserts or abra sion sleeve, make sure
these pieces and the cage (2) slip together
on the back of the cage (2). Make sure the
tongue on the plug (6) stub shaft and the
groove in the stem sub as sem bly (7) mate
to geth er. Check by look ing in through the
back-end of the body (1) or by ad just ing the
supply pres sure to the ac tu a tor within limits
of bench range as spec i fi ed on name plate
(21), watch ing for plug (6) move ment as stem
sub as sem bly (7) ro tates.
2. If at the body assembly (BA) level, ensure
that the stem sub as sem bly (7) is pulled back
into the bonnet of the body (1) so that the
stem (7) is in contact with the retainer sleeve
sub as sem bly (8).
3. Place plug (6) into cage (2). The ori en ta tion
must be such that the short stub shaft of the
plug (6) with the ma chined tongue extends
through the fl at side of the cage (2) toward
the stem (7). The plug (6) must be rotated
135° to 180° open before the plug (6) stub
shafts will slip into the cage's (2) bearing (4)
(5) slots. See fi gures 4 and 5.