Flowserve ISC2 Dual metal bellows sea - 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 all O-rings by diametrical size. For most seals there are four
sizes total: quantity 1 of the largest size O-ring [18.1], quantity 4 of the
2nd largest size O-rings [14], [14.1], [76] and [76.1], quantity 1 of the 2nd
smallest size O-ring [19] and quantity 1 of the smallest size O-ring [71]. If
the seal has six different size O-rings, the 3rd smallest size [76] and [76.1]
has quantity 2. Prior to installing each O-ring at its respective step, lightly
lubricate with silicone grease and stretch slightly.
6.2 Place sleeve assembly [1] on a flat surface
with the drive end (set screw holes)
positioned upward.
For sizes ≤ 2.750 inch (70 mm) install the
bellows vibration dampener [183] into the
back counterbore of the sleeve assembly
and place inboard bellows O-ring [76] in the
groove behind the drive ring in the sleeve.
See Figure 10.
For sizes > 2.750 inch (70 mm) install the
O-ring [76] into the bellows assembly. See
Figure 11.
6.3 For sizes ≤ 2.750 inch (70 mm) align the 2
flats on the inboard bellows assembly [79]
with the 2 flats on the inside of the drive ring
in the sleeve end housing, and press the
Figure 10
Figure 11