Emerson Vilter VSS User Manual

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Section 5 • Maintenance/Service
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
Compressor Shaft Seal Replacement - For VSH/
VSSH Units
Shaft Seal Removal - For Part# 25985Y and
25985YA
(see Table 5-16 and Figure 5-62)
WARNING
Follow local lock-out/tag-out procedure. Compressors
must be depressurized before attempting to do any
work on them. Failure to comply may result in serious
injury, death and/or damage to equipment.
NOTE
There will be a small amount of oil drainage as the
shaft seal housing is removed.
1. Remove bolts (281) securing shaft seal housing
(218) to compressor.
2. Insert two bolts (281) into threaded jacking holes
to assist in removing shaft seal housing (218).
3. Remove silicon carbide rotating face (219.6) &
O-ring (219.7) from shaft.
4. Remove spring holder (219.8) from shaft.
5. Remove oil seal (230) from shaft seal housing (218).
6. Remove retaining ring (219.5) from seal housing.
7. Flip the seal housing over and carefully tap the
stationary silicon carbide piece (219.3), retainer
(219.4), and O-ring (219.2) out of the seal housing
using brass drift and hammer.
8. Remove O-ring (260).
NOTE
VSH/VSSH compressors are designed using the
following shaft seals, see Table 5-16 for their VPN
and pressure ranges.
Table 5-16. VSH/VSSH Shaft Seals
Figure 5-62. Shaft Seal Breakdown (28985Y & 28985YA)
Shaft Seal
Pressure (PSI)
O-Ring Material
Static Dynamic
25985Y 1800 1350 Fluoroelastomer
25985YA 1800 1350 EPDM
25985W 1800 1350 Fluoroelastomer
25985WA 1800 1350 EPDM

Emerson Vilter VSS Specifications

General

Brand	Emerson
Model	Vilter VSS
Category	Air Compressor
Language	English