Types 1098-EGR and 1098H-EGR
16
Replacing Travel Indicator Assembly
The Types 1098-EGR and 1098H-EGR travel indicator
assemblies now incorporate a redesigned O-ring
retainer (key 6), Polytetrauoroethylene (PTFE)
backup rings (key 36), and an additional indicator
tting (key 35).
When performing maintenance on the original
Type 1098-EGR or 1098H-EGR body ange,
travel indicator replacement is recommended. The
redesigned travel indicator assembly is incorporated
into all Quick-Change Trim kits (e.g. 25A3170X012)
and on the Travel Indicator Kits (see table by size).
The elastomer repair kits contain the components for
the redesigned travel indicator assembly.
1. Remove the travel indicator assembly by
removing lower indicator tting (key 5) from the
body ange (key 2).
2. Coat the threads of the lower indicator tting
(key 5) with a good grade of general-purpose grease.
3. Install travel indicator assembly (10C1212), torque
to 40-inch-pounds.
4. Check indicator zeroing by unscrewing the
indicator protector (key 19) and seeing if the
ange of the indicator nut (key 22) lines up evenly
with the bottom marking on the indicator scale
(key 18). If not, remove the indicator scale
and separate the indicator nut and hex nut
(key 8). Hold the indicator scale against the
indicator tting (key 5) with the scale base
resting against the shoulder of the tting, and turn
the indicator nut until its ange is aligned with
the bottom scale marking. Then lock both nuts
against each other, and install the indicator scale
and protector.
Replacing Trim Parts
Perform this procedure when inspecting, cleaning, or
replacing individual trim package parts. Key numbers
are referenced in Figures 12 and 13.
Note
O-ring, travel indicator parts, or
optional travel stop (key 32) in step 1
can be gained without removing the
1. Remove the indicator tting (key 5) and attached
parts. Proceed to step 5 if only maintenance on
the tting or attached parts is performed.
2. Remove the cap screws (key 3) on a cast iron
body or remove the hex nuts (key 29, not shown)
on a steel body, and pry the body ange loose
from the valve body (key 1).
3. Use the valve body as a holding xture if desired.
Flip the body ange over, and anchor it on the
valve body as shown in Figure 10, removing the
pipe plug (key 31) rst if necessary.
4. To gain access to the port seal (key 12), upper seal
(key 15), or valve plug part, unscrew the seat ring
(key 13) from the cage (key 11) and the cage from
the body ange. For leverage, a wrench handle
or similar tool may be inserted into the seat
ring slots (Figure 10) and a strap wrench may be
wrapped around a standard or a Whisper Trim
TM
cage, or a soft bar may be inserted through the
windows of a standard cage. To remove the piston
ring (key 14) and/or plug O-ring (key 20), remove
the valve plug (key 16) from the body ange, insert
a screwdriver into the precut fold over area of
the piston ring, and unfold the piston ring. Proceed
to step 6 if no further maintenance is necessary.
5. To replace the body ange or gain access to the
spring, indicator stem (key 10), stem O-ring
(key 7), spring seat (key 28), E-ring (key 23),
or optional travel stop, remove the indicator
protector (key 19) and indicator scale (key 18).
Since some compression is left in the spring,
carefully remove the anged nut (key 22) and hex
nut (key 8). A screwdriver may be inserted
through the press-t bushing (key 6) to remove the
stem O-ring without removing the bushing. If
necessary, unscrew the travel stop (if used), and
unclip the E-ring from the indicator stem.
6. Replace and lubricate parts such as the gasket
(key 4) and cage O-ring (key 17) as necessary,
making sure that if the port and upper seals were
removed they are installed in their retaining slots
with the grooved sides facing out. Also lubricate
SIZE, INCHES (DN) m)
1 (25) 75 to 95 (102 to 129)
2 (50) 55 to 70 (75 to 95)
3 (80) 100 to 130 (136 to 176)
4 (100) 160 to 210 (217 to 285)
6, 8 x 6, 12 x 6
(150, 200 x 150, 300 x 150)
375 to 425 (509 to 577)
Type EGR Cap Screw (key 3) Torque, FOOT-POUNDS (N•m)
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