June, 2012 IMPCO Technologies Inc. PPI-124 REV. A
3030 South Susan St. Page 1 of 4
Santa Ana, CA 92704
www.impcotechnologies.com
REPAIR KIT RKD1-20-3 & RKD1-20-3B
FOR 600 DIAPHRAGM
INSTRUCTIONS
Important: Any maintenance, service or
repair should be performed by trained
and experienced service technicians.
Proper tools and equipment should be
used to prevent injury to the servicing
technician, property or system
components. Service repairs should
always be performed in a safe
environment and the technician should
always wear protective clothing to
prevent injury.
The IMPCO PPI-124 repair kit
instructions will provide the technician
information to successfully repair the
600 Mixer/Carburetor. Always inspect
the major casting pieces for damage,
corrosion or cracks before attempting a
service repair. Be sure the repair kit
part number you are using is correct for
the carburetor being serviced.
Repair Kit, P/N RKD1-20-3 with fluorosilicone
diaphragm, plate and bushing preassembled, plus 4
screws. RKD1-20-3B is identical, but also includes a
lower bushing.
Repair Kit & Related Parts
Item
Part
Number
Description
Repair
Kit Qty
1 B3-59 Bushing,A/V
Upper
600Vf3
1
2
D1-20-3
Diaphragm, Mixer Fvmq 600 Ser
1
3 P2-61-2
Plate-Diaphragm
1
4
S1-12
SCREW,PAN HD,8-32 x 5/16 L
4
5
B3-60
Bushing,A/V Lower 600Vf3
1*
6 S1-3 Screw
10-24x5/8
-
7 NSS
Body
-
8 NSS
Air
Valve
-
9 C1-32 Cover
-
10 Varies Spring
-
*Included in repair kit RK-D1-20-3B Only
PPI-124 REV. A IMPCO Technologies Inc. June, 2010
3030 South Susan St. Page 2 of 4
Santa Ana, CA 92704
www.impcotechnologies.com
INSTRUCTIONS:
1) Remove screws (6), cover (9), and spring (10).
Retain all of these items.
2) Remove diaphragm and air valve assembly (Items
1-4) from the body. Remove the four screws (4)
and diaphragm (2) from the air valve (8) and
discard screws (4) and diaphragm (2).
3) Inspect the body (7), cover (9) and air valve (8) for
damage and clean as necessary using a safety
solvent.
NOTE: Inspect the guide boss (shown by arrow at left
on the underside of the cover). Any unusual wear or
damage may affect performance and prematurely
wear down the upper bushing in the diaphragm
assembly.
