Flowserve ISC2 Dual Pusher Repair - Manual (Page 7)

7
5 Seal Assembly Preparation
Tools Needed:
• Sizes ≤ 2.750": 3/16", 1/8" hex key wrenches
• Sizes > 2.750": 1/8", 3/16" and/or 7/32" hex key wrenches
• Sizes ≤ 65 mm: 3 mm hex key wrench
• Sizes > 65 mm: 5 mm hex key wrench for standard bore
• Sizes > 65 mm: 6 mm hex key wrench for enlarged bore
• Silicone grease (included in repair kit)
• Ethyl alcohol and clean, lint-free towel for cleaning seal faces
• Needle nose pliers or tweezers
6 Seal Assembly Instructions
Some assembly steps include blind fits of pins and drive flats. Mark the locations
of the pins or drive flats with a felt tip marker, or align the feature with another
visible feature on the seal to assist with assembly. All seal faces should be
cleaned with ethyl alcohol prior to placing the faces together at each respective
step in the assembly process.
6.1 Arrange O-rings by diametrical size. There are four sizes total: quantity 1
of the largest size O-ring [18.1]; quantity 6 of the 2nd largest size O-ring
[13], [13.1], [13.2], [13.3], [76], and [76.1]; quantity 1 of the 2nd smallest
size O-ring [19]; and quantity 1 of the smallest size O-ring [71]. Prior to
installing each O-ring at its respective step,
lightly lubricate with silicone grease and
stretch slightly.
6.2 Place the sleeve assembly [1] on the work
surface with the drive end [set screw holes]
positioned upward.
For sizes ≤ 2.750 inch (70 mm) install the
vibration dampener [183] into the back
counterbore of the sleeve assembly [1]. See
Figure 10.
For sizes > 2.750 inch (70 mm) install the
square-headed pin [5] into the hole on the
counterbore of the sleeve assembly. Cut
a 0.25 inch (6 mm) slot in the vibration
dampener [183]. See Figure 11. Install
into the sleeve assembly [1] with the slot
positioned where the drive pin is located.
6.3 Select rotating face O-ring [76] and stretch
slightly. Lightly lubricate the O-ring and install
it into the sleeve assembly [1]. See Figure 12.
Figure 10
Figure 11
Figure 12