Type LR128
17
!
WARNING
Avoid personal injury or damage
to property from sudden release of
pressure or uncontrolled process
uid. Before starting to disassemble,
carefully release all pressures
according to the shutdown procedure.
Use gauges to monitor inlet, loading
and outlet pressures while releasing
these pressures.
1. Remove the indicator protector (key 22, Figure 7)
and indicator cover (key 21).
2. Remove the rst hex nut (key 4) and the indicator
washer (key 20).
3. Unscrew but do not completely remove the second
hex nut (key 4) on the top of the indicator stem
(key 15).
4. Use a wrench to remove indicator tting (key 19).
5. Lift out travel indicator assembly. If replacing travel
indicator with travel indicator plug, skip to step 9.
6. Compress the main spring (key 12). Remove the
second hex nut (key 4). Parts will separate easily
when the hex nut is removed.
7. Slide the indicator stem (key 15) out of the
indicator tting (key 19). The main spring (key 12)
and upper spring seat (key 17) will disengage.
8. If necessary, use the indicator stem (key 15) to pry
the back-up rings (key 16) and O-ring (key 18)
out of the indicator tting (key 19).
9. Check the indicator tting O-ring (key 6). Lubricate
and replace if necessary.
10. To replace travel indicator parts, lubricate
all O-rings, back-up rings and threads. To
reassemble, hold the indicator stem (key 15) and
place the parts on the stem in the following order
(see Figure 13).
• Main Spring (key 12), small end rst
• Upper Spring Seat (key 17), make sure to
place the large end toward the spring
• First Back-up Ring (key 16)
• O-ring (key 18)
• Second Back-up Ring (key 16)
• Indicator Fitting (key 19), the back-up rings
(key 16) and O-ring (key 18) should slide into
the indicator tting and the small end of the
upper spring seat (key 17) should slide into the
indicator tting.
• First Hex Nut (key 4)
• Indicator Washer (key 20)
• Second Hex Nut (key 4)
11. Install the indicator tting (key 19) into the bonnet
(key 2, Figure 7), tighten to the proper torque
(see Table 9). To set the travel indicator, hold
the indicator cover (key 21) next to the indicator
tting (key 19). Screw the hex nuts (key 4) and the
indicator washer (key 20) down on the indicator
stem (key 15) until the washer is even with the
lowest marking on the indicator cover. Lightly
lubricate the indicator cover threads and install.
Replace the indicator protector (key 22).
To
replace the travel indicator with the non-travel
indicator option, place the main spring (key 12)
into the bonnet. Install the indicator plug (key 19,
Figure 11) and tighten to proper torque (see
Table 9).
Figure 13. Travel Indicator Parts
INDICATOR COVER
(KEY 21)
HEX NUTS
(KEY 4)
INDICATOR FITTING
(KEY 19)
O-RING
(KEY 18)
UPPER SPRING
SEAT (KEY 17)
MAIN SPRING
(KEY 12)
INDICATOR STEM
(KEY 15)
BACK-UP
RINGS
(KEY 16)
INDICATOR
O-RING (KEY 6)
INDICATOR
WASHER (KEY 20)
W7400_1
(20 Seiten)
(1 Seiten)
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