Types 1098-EGR and 1098H-EGR
16
SIzES
TORquE
NPS
DN
F
oot-Pounds
N•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 200
217 to 271
6, 8 x 6, 12 x 6
150, 200 x 150,
300 x 150
275 to 300
373 to 407
Type EGR Main Valve Cap Screw (key 3) Torque
1. Remove the travel indicator assembly by
removing lower indicator fitting (key 5) from the
body flange (key 2).
2. Coat the threads of the lower indicator fitting
(key 5) with a good grade of general-purpose grease.
3. Install travel indicator assembly (10C1212), torque
to 40 foot-pounds / 54 N•m.
4. Check indicator zeroing by unscrewing the
indicator protector (key 19) and seeing if the
flange 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 fitting (key 5) with the scale base
resting against the shoulder of the fitting, and turn
the indicator nut until its flange 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
Access to the spring (key 9), flange
O-ring, travel indicator parts, or
optional travel stop (key 32) in step 1
can be gained without removing the
body flange (key 2).
1. Remove the indicator fitting (key 5) and attached
parts. Proceed to step 5 if only maintenance on
the fitting 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 flange (key 2)
loose from the valve body (key 1).
3. Use the valve body (key 1) as a holding fixture
if desired. Flip the body flange (key 2) over,
and anchor it on the valve body as shown in
Figure 10, removing the pipe plug (key 31) first
if necessary.
4. To gain access to the port seal (key 12), upper seal
(key 15), or valve plug (key 16) part, unscrew the
seat ring (key 13) from the cage (key 11) and the
cage from the body flange (key 2). 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
®
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 flange, 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 flange (key 2) or gain access
to the spring (key 9), indicator stem (key 10), stem
O-ring (key 7), spring seat (key 28), E-ring
(key 23), or optional travel stop (key 32), remove
the indicator protector (key 19) and indicator scale
(key 18). Since some compression is left in the
spring,carefully remove the flanged nut (key 22)
and hex nut (key 8). A screwdriver may be
inserted through the press-fit 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 (key 12) and upper
seals (key 15) were removed they are installed
in their retaining slots with the grooved sides
facing out. Also lubricate any other surfaces as
necessary for ease of installation. No further main
valve maintenance is necessary if just the
indicator fitting (key 5) and attached parts
were removed.
7. Install the plug O-ring (key 20) and piston ring
(key 14) onto the valve plug (key 16). Insert the
valve plug into the body flange (key 2), install the
cage (key 11) plus upper seal (key 15) and O-ring
(key 17) into the body flange and then install the
