O-rings (keys 26 and 28) for damage and replace
if necessary. Check sleeve (key 16) seating
surface for damage. Check O-rings (keys 3 and 4)
and anti-friction rings (key 2), replace if necessary.
6.
Reassemble in reverse order. Refer to Table 2 for
torque values. Tighten all bolts using a star pattern
and repeat 2 to 3 times to ensure proper torque.
Type FL Travel indicator Maintenance
A new and improved version of the travel indicator has
been phased in during 2013. The new version improves
the O-ring stem seal to minimize leakage and extend
service life. The components of the legacy and new
versions are not interchangeable. If maintenance is
performed on the travel indicator, it is recommended to
replace the entire travel indicator assembly with the new
version. Part numbers for the assemblies are shown in
the parts list. Figure 5 shows the difference between the
designs. The spare parts kits will support either design.
Take care to use the correct O-ring (key 37A or 37B)
when performing maintenance, see parts list for the
appropriate part number.
1.
Remove plastic travel indicator cover (key 40).
2.
Loosen travel indicator bushing (key 38) and
remove it by sliding it over the travel indicator stem
(key 34).
3. Remove indicator fitting (key 36) and inspect
O-ring
(key 35). Remove O-ring (key 37B) and back-
up rings (key 66). Replace and lubricate
O-ring
if damaged. Pull up on the travel indicator stem
(key 34) to force the spring collet (key 33) out of the
diaphragm head groove. Examine these parts and
the stem for wear and replace if necessary.
4. Insert the travel indicator stem (key 34) and
spring collet (key 33) back into the diaphragm
head groove. Replace the indicator fitting
(key 36) and O-ring (key 35) and tighten with a
reference torque of 20 ft-lbs / 27.1 N•m.
5. Lubricate the O-ring (key 37B) and back-up rings
(key 66, 2 required). Place one back-up ring on
the stem (key 34) followed by the O-ring and then
the other back-up ring. Push into groove of the
indicator fitting (key 36).
iMPROVED TRaVEL inDiCaTOR DETaiL
TOP ViEW
LEgaCY TRaVEL inDiCaTOR DETaiL
TOP ViEW
Figure 5.
Type FL Travel Indicator Assembly
aPPLY LUBRiCanT (L) / SEaLanT (S)
(1)
:
L1 = LiThiUM hYDROXYSTEgRaTE nLgi 2 gRaDE gREaSE
S1 = anaEROBiC METhaCRYLaTE SEaLanT FOR nUTS anD BOLTS
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
40
34
38
38
36
35
33
L1
S1
40
34
38
36
66
35
33
L1
S1
L1
37A
L1
37B
38
P1764
12
Type FL
North America
Only
