Sundyne LMC 341F - Process Conditions Verification; Process Parameter Matching

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flatness on these seal noses are two light bands or .00002” flatness. Install a seal repair
kit for the specified seals in your unit. See your Sundyne Compressor Specification Sheet
or Recommended Spare Parts List Bill of Materials for the part numbers.
Step 14 Inspect all rotating faces in your unit (process and gearbox). If rotating faces are nicked,
cracked, or have wear rings from seal contact replace them with new hardware. Check
the flatness of the rotating faces to factory specifications. Flatness is specified at two light
bands or .00002” flatness. The rotating face for the gearbox seal (51D) is to have a matte
finish applied. The matte finish is specified as 10-15 Ra micro finish, and still maintaining
the flatness of .00002” or two light bands.
Step 15 Inspect the high speed shaft shoulder where the gearbox rotating face locates. Check for
nicks or dings, and raised surfaces on this shoulder. If any abnormalities are found, the
shoulder will need to be relapped to factory specification of two light bands flatness or
.00002”. If this specification cannot be met replace the high speed shaft (A130).
Step 16 Inspect the high speed shaft (A130) thrust surfaces. If these show abnormal wear, burns,
gouges, deep circular scratches or wear patterns, replace the high speed shaft (A130)
with a new assembly.
Step 17 Lubricate all other parts thoroughly with light turbine oil.
Table 7.1 Bearing and Shaft Clearances
Item
No.
Description Characteristics Critical Size
101B HO06AY01/HO06AY02
Upper, Gearbox Housing
Upper, Input Bearing Bore Ø 4.3311±.0005
Upper, Idler Bearing Bore Ø 3.6255±.0005
102 PL01AY01 Bearing Plate Lower, Input Bearing Liner Ø 4.3311±.0005
Upper High Speed Shaft
Bearing Bore
Ø 3.1880±.0005
101A HO05AY01/HO05AY02/HO05AY03
Lower, Gearbox Housing
Lower, High Speed Bearing
Bore
Ø 3.1880±.0005
Lower, Idler Bearing Bore Ø 3.6255±.0005
151D BE09AY01A, Upper Idler Bearing Journal Inside Diameter Ø 2.5065±.0005
151C BE09AY02A, Lower Idler Bearing Journal Inside Diameter Ø 1.7545±.0005
151B Upper High Speed Bearing Maximum Bore Diameter Ø 1.5015
151A Lower High Speed Bearing Maximum Bore Diameter Ø 1.5015