Gast 5565 Series Lubricated Vacuum Pumps and Compressors - Manual (Page 5)

Disposal (Please note current regulations)
Parts of the rotary vane pumps and compressors,
shafts, iron or aluminum castings, plastic or glass
parts or bearings, may be recycled as scrap
materials.
Pump Disassembly:
1. Remove dead end shroud, fan and fan spacer.
2. Use a wheel puller to remove dead end plate and
bearing from unit body; note direction of vane’s bevel
edge. Do not damage dowel pins between end plate
and body.
3. Save bearing spacer on shaft’s dead end for
re-assembly.
4. Remove snap ring from end plate.
5. Save snap ring, Belleville springs, and washer for
re-assembly.
6. Remove bearing from dead-end plate.
7. Check exposed surfaces of rotor, body, and end plate
for scoring. If no scoring is found, perform Minor
Rebuild to replace only vanes and dead end bearing.
If severe damage is found, perform Major Rebuild.
Gast will NOT guarantee field-rebuilt product
performance. For performance guarantee, the product
must be returned to a Gast Authorized Service Facility.
Service Kit contents vary. Most contain vanes, gaskets
oiler wick and filter elements.
SERVICE KIT INSTALLATION
Ꮨ
Disconnect electrical power supply cord before
installing Service Kit.
If product is hard wired into system, disconnect
electrical power at the circuit breaker or fuse box
before installing Service Kit.
Disconnect air supply and vent all air lines to
release pressure or vacuum.
Failure to follow these instructions can result in
death, fire or electrical shock.
WARNING
Electrical Shock Hazard
We have Gast Certified Service Centers throughout the world. For the most up-to-
date listing, contact one of our sales offices :
Minor Rebuild:
Install new vanes supplied with kit. Be careful to face
vane bevels in proper direction (as noted in step 2).
9. Place end plate over shaft with dowel pins aligned.
10. Place bearing spacer on dead end of shaft.
11. Place new bearing in its bore in dead end plate. Be
careful to press only on inner bearing race.
12. Install and tighten unit body bolts.
13. Install Belleville springs with washer between them and
snap ring.
Major Rebuild:
8. Remove drive end cap.
9. Use a wheel puller to remove drive end plate and
bearing from body. Do not remove or damage dowel
pins in body.
10. Save bearing spacer and endplate gasket for
re-assembly.
11. Place one of new bearings in its seat in drive-end plate,
then place one of shoulder rings on drive-end of shaft.
12. Using an arbor press, press bearing onto shaft. Be
careful to press only on inner bearing race.
13. Tighten unit body bolts.
14. Install new vanes supplied with kit. Be careful to face
vane bevels in proper direction (as noted in step 2).
15. Perform steps #9-11 from Minor Rebuild.
16. Install Belleville springs with washer between them an
snap ring.
17. Install and tighten unit body bolts.
18. Apply a thread-lock adhesive.
19. Start drive end cap into its thread in drive end plate, but
do not tighten it.
20. Place a dial indicator against dead-end of shaft to
measure axial movement.
21.Tighten drive end cap until indicator shows .002" to
.003" of shaft movement against Belleville springs.
22. Replace filter elements.
23. Verify unit rotates freely by hand before reconnecting
power.
24. Before putting unit into service, ensure that any
external accessories have not been damaged.
25 .Reconnect power.
26. Check for proper rotation if unit is three-phase motor.
If unit fails to produce proper vacuum or pressure, or is
excessively noisy, turn off and return unit to an Authorized
Service Facility.
Gast Manufacturing, Inc.
2300 S. Highway M139
Benton Harbor, MI 49022
Ph: 269/926-6171
FAX: 269/925-8288
www.gastmfg.com
Gast Hong Kong
Unit 12, 21/F, Block B
New Trade Plaza
6, On Ping Street, Shatin
N. T. Hong Kong
Ph: (852) 2690 1066
Fax: (852) 2690 1012
www.gasthk.com
Gast Group Limited, United Kingdom
Unit 11, The I O Centre
Nash Road
Redditch, B98 7AS
United Kingdom
ph: +44 (0) 1527 504040
Fax: +44 (0) 1527 525262
www.gastmfg.com
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