6
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 with compressor models.
If compressor still does not produce proper pressure,
send unit to a Gast Authorized Service Facility for repair.
Disassembly
1. Remove hex nuts from cover(Diagram F).
2. Remove cover and cover gasket.
3. Gently lift out electromagnet and casing block.
4. Remove head asembly from diaphragm casing
block, discard if replacing.
5. Remove phillips screw from center of diaphragm
and remove the diaphragm.
Re-assembly
1. Reinstall new diaphragm, make sure it fits securely
into diaphagm casing (note the two locating notches
for re-assembly).
2. Reinstall and tighten the phillips screw
3. Reinstall or replace the head assembly.
3. Fit electromagnet unit over casing mechanism and fit
components back into housing of pump
4. Reinstall cover gasket and cover.
5. Tighten hex nuts in place
Replacing Head and Diaphragm Assemblies
(DDL5)
DIAGRAM F
60 Hz
50 Hz
DDL5
K898
--
N/A
DDL8
K890
--
N/A
DDL8B
K890
--
N/A
DDL15
K890
--
N/A
DDL15B
K890
--
N/A
DDL30
K887
K932
K891
DDL30B
K887
K932
N/A
DDL40
K887
K932
K891
DDL40B
K887
K932
N/A
DDL60
K888
K931
K891
DDL80
K888
K931
K891
DDL120
K889
K930
K892
DDL150
K889
K930
K892
DBP25
K941
K941A
N/A
DBP40
K943
K943
K891A
DBM30B
K947
K947A
N/A
DBM20
K951
K951
N/A
DBM40
K942
K942
K891B
DBM60
K944
K944A
K891B
DBM80
K950
K950A
K891B
DBMS60
--
K952A
K891B
DBMS80
--
K953A
K891B
DBMS600
K944
--
K891B
DBMS800
K950
--
K891B
DBMX80
K945
K945A
K891
DBMX100
K949
K949A
K891
DBMX120
K956
K956
K891
DBMX150
K946
K946
K891C
DBMX200
K946
K946
K891C
MODEL
DIAPHRAGM
FILTER
& HEAD ASSY
SERVICE KIT INSTALLATION
c
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
SERVICE KITS *
* The service kit may contain parts for more than one
model or style of linear pump. Parts not needed may
be discarded. Kits listed are for stock models.
For specific OEM models, please consult the factory.
When corresponding or ordering kits, please give
complete model and serial numbers.
