Impco E Series Manuale utente

November, 2014 IMPCO Technologies Inc. PPI-2 REV. J

3030 South Susan St. Page 1 of 16

Santa Ana, CA 92704

www.impcotechnologies.com

3030 S Susan Street, Santa Ana, CA 92704

Ph: +1 714 656 1200 Fax: +1 714 656 1400

MODEL E & PE SERIES

TWO-STAGE REGULATOR REPAIR KIT 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-2 repair kit instructions will

provide the technician information to

successfully repair the model E and PE

regulators. 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

regulator being serviced. Diaphragms are

color coded and have different performance

characteristics:

BLACK: Hydrin diaphragm material is the

standard material and is well suited for the

most common applications.

YELLOW: Silicone diaphragm material is the

optional upgrade material that provides

excellent flexibility in cold weather climates

and is more resistant to chemical

contamination.

BLUE: Fluorosilicone diaphragm material

provides excellent high and low temperature

durability with increased chemical resistance.

This material is recommended for turbo

applications.

Model E Two Stage Regulator

Do not use Teflon tape to seal any fuel fittings.

Failure to follow this warning may cause the

regulator to leak internally, that may cause

serious injury and/or property damage.

Part # Description

RK-E Repair Kit Model E, Hydrin Diaphragm

RK-E-2 Repair Kit Model E, w/Silicone Diaphragm

RK-E-3 Repair Kit Model E, Fluorosilicone Diaphragm

RK-PE Repair Kit Model PE, Hydrin Diaphragm

RK-TE Repair Kit Model E, Turbo w/Silicone Diaphragm

REPAIR KIT PART NUMBERS

PPI-2 REV. JIMPCO Technologies Inc November, 2014

3030 South Susan St. Page 2 of 16

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Ph: +1 714 656 1200 Fax: +1 714 656 1400

MODEL E & PE SERIES REGULATORS

MODEL E SHOWN

ITEM # PART # DESCRIPTION

1S7-1 (NSS) Screen, Atmospheric Vent

2S1-3* Screw, 10-24 x 5/8" SEMS (8)

3AC1-22-10298-001 (NSS) Cover, Secondary

AD1-14-1* (1) (NSS) Diaphragm, Secondary, Hydrin Model E

AD1-23* (2) (NSS) Diaphragm, Secondary, Silicone Model E

AD1-23-4* (3) (NSS) Diaphragm, Secondary, Flourosilicone E

AD1-14-2* (4) (NSS) Diaphragm, Secondary, Hydrin PE

AD1-23-2* (5) (NSS) Diaphragm, Secondary, Silicone PE

5L1-86* (NSS) Lever, Secondary w/ or w/o Hole

6S4-37* (NSS) Seat, Secondary

S2-22 Spring, Secondary Regulator (Blue), Standard

S2-23 Spring, Secondary Regulator (Orange), Option

P1-7 (NSS) Pin, Secondary Lever Fulcrum (Early Model)

P1-8 (NSS) Pin, Secondary Lever Fulcrum (Later Model)

9S1-40* (NSS) Screw, 10-24 x 3/8" SEMS

10 S1-1555-002* (1)(2)(3)(NSS) Screw, 12-24 x 1 1/8" SEMS Model E Only

C1-20 (NSS) Cover, Primary Diaphragm (Early Model)

C1-50815-001 (NSS) Cover, Primary Diaphragm (Later Model)

12 S2-13 (NSS) Spring, Primary Regulator EB (2)

13 AD1-15* (NSS) Diaphragm Assy, Primary

14 P1-11* (NSS) Pin, Primary Valve

15 AB1-20A-10307-001 (NSS) Body, Regulator E Series

16 G1-37* (NSS) Gasket, Regulator Body

17 F3-1* (NSS) Sponge

18 S4-7* (NSS) Seat, Primary

19 AB1-19-10309-001 (NSS) Body, Assy, Heat Exchanger

20 P3-13 (NSS) Plug, Hex Head, 1/8 NPT (3)

21 G1-30079-1* Gasket, Heat Exchanger Cover

22 C1-21PM (NSS) Cover, Heat Exchanger

23 W1-27* (NSS) Washer, hand primer

24 S1-1560-004 (NSS) Screw 8-32 x .25" (Later Model)

25 W1-14187-016 (NSS) Flat Washer (Later Model)

26 P1-8* (NSS) Pin, Lever Diaphragm Link

7†

NSS = Not Serviced Separately

* Repair kit components. (1) = RK-E; (2) = RK-E-2;

(3) = RK-E-3; (4) RK-PE; (5) = RK-TE

† Two vapor outlet pressures are available. The Orange secondary

spring gives Neg. 0.50” w.c. (Neg 0.12 kPa) pressure. Blue secondary

spring gives a Neg. 1.50” w.c. (Neg. 0.37 kPa) pressure.

November, 2014 IMPCO Technologies Inc. PPI-2 REV. J

3030 South Susan St. Page 3 of 16

Santa Ana, CA 92704

www.impcotechnologies.com

3030 S Susan Street, Santa Ana, CA 92704

Ph: +1 714 656 1200 Fax: +1 714 656 1400

COMPONENT MODEL PE

MODEL PE COMPONENTS SHOWN

ITEM # PART#

DESCRIPTION

1S7-1 (NSS)

Screen, Atmospheric Vent

2S1-3*

Screw, 10-24 x 5/8" SEMS (8)

3C1-22-2 (NSS)

Cover Assembly

AD1-14-2*

Diaphragm, Secondary, Hydrin

AD1-23-2*

Diaphragm, Secondary, Silicone

S2-37

Spring, Secondary Standard PE

S2-42

Spring, Secondary, PE (Optional)

27 S1-101*

Screw, 6-32 x 1/4" SEMS (4)

28 H3-3 (NSS)

Housing, Spring

29 G1-84*

Gasket, Spring Housing

NSS-Not Serviced Separately

*Repair Kit Components

REBUILD INSTRUCTIONS

1.Under normal conditions, installation of a complete

repair kit should be necessary only at the time of a major

engine overhaul or when the regulator has been out of

service for an extended period of time. Each kit includes

the necessary gaskets, diaphragms, seals and some

replacement screws.

2. Model PE Only (Skip for E): Remove the spring

retainer housing cover screws (27) and cover (28).

Remove the housing gasket (29) and secondary spring

(7).

PPI-2 REV. JIMPCO Technologies Inc November, 2014

3030 South Susan St. Page 4 of 16

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3.Remove the diaphragm cover (3) by taking out the eight

screws (2) around the circumference of the top cover.

4.Remove the secondary diaphragm (4). This requires

the assembly be moved about one inch away from

the gas outlet to disengage the two prongs of the

diaphragm link from the lever (5).

5.Diaphragm (4) and cover (3) removed showing

secondary lever (5).

Early Models Only (Skip to Step 9 for later models):

6.Loosen the screw (10) retaining the fulcrum pin (8).

November, 2014 IMPCO Technologies Inc. PPI-2 REV. J

3030 South Susan St. Page 5 of 16

Santa Ana, CA 92704

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7. Extract the screw (10) in preparation for removal of

the fulcrum pin (8).

8. Slide out the fulcrum pin (8) and remove the pin.

Later Models Only (Skip to Step 10 for Early Models)

9. Using a T-20 Torx tool, remove the screw (24) and

washer (25) holding the fulcrum pin (8). Remove

fulcrum pin (8).

10. Remove the lever and seat assembly (5 & 6). E

Only: Remove Spring (7).

PPI-2 REV. JIMPCO Technologies Inc November, 2014

3030 South Susan St. Page 6 of 16

Santa Ana, CA 92704

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3030 S Susan Street, Santa Ana, CA 92704

Ph: +1 714 656 1200 Fax: +1 714 656 1400

11. Remove the primary diaphragm cover (11). This

requires removal of four fillister head screws (10)

and two pan head screws (9).

12. Remove springs (12) and the primary diaphragm

assembly (13).

13. Remove the primary valve pin (14) as shown by

the tip of the pen.

14. Remove the last two fillister screws (10).

November, 2014 IMPCO Technologies Inc. PPI-2 REV. J

3030 South Susan St. Page 7 of 16

Santa Ana, CA 92704

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3030 S Susan Street, Santa Ana, CA 92704

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15. Loosen and separate the body (15) from the heat

exchanger (19).

16. Remove the old primary valve seat (18) and

sponge (17). Discard both.

17. Remove the back cover screws (2).

18. Tap the side of the cover (22) firmly with the

handle of the screw driver to break the cover

loose from the gasket (21).

PPI-2 REV. JIMPCO Technologies Inc November, 2014

3030 South Susan St. Page 8 of 16

Santa Ana, CA 92704

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3030 S Susan Street, Santa Ana, CA 92704

Ph: +1 714 656 1200 Fax: +1 714 656 1400

19. Deposits may accumulate from the use of hard

water. This condition can be alleviated through

the use of radiator additives or permanent

antifreeze solutions. Remove any accumulation

with a wire brush before assembly. Steel water

inlet and outlet fittings may cause erosion from

electrolysis. Use brass or plastic water fittings

only.

REASSEMBLY OF REGULATOR

•Carefully clean and inspect all metal parts; springs, levers, pivot pins and screws. Replace all parts

that are included in the repair kits.

•Carefully clean the body casting and inspect all sealing surfaces . Wipe with a clean rag. Inspect

the primary section for foreign materials that might loosen and damage the soft face valves.

•Clear out the inlet and outlet passages with compressed air. Be sure no foreign material remains in

these passages.

•Inspect the primary orifice and the secondary orifice for nicks, scratches or uneven wear.

IMPORTANT!

If the primary or secondary seats show any of the above mentioned conditions, the regulator is not

rebuildable and must be replaced.

20. Reassemble the back cover (22) and gasket (21)

to the heat exchanger body (19). Replace six

screws (2). Match the mounting bosses in the

cover with those on the heat exchanger. Tighten

the two screws shown in the photo first, then

upper and lower screws diagonally opposite to

draw the cover down evenly. Torque to 25-35 in-

lbs (2.8-4.0 Nm).

21. The pen indicates the recess cast in the body

(19) to retain the sponge (17). Be sure to

accurately install the sponge in the recess.

November, 2014 IMPCO Technologies Inc. PPI-2 REV. J

3030 South Susan St. Page 9 of 16

Santa Ana, CA 92704

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3030 S Susan Street, Santa Ana, CA 92704

Ph: +1 714 656 1200 Fax: +1 714 656 1400

22. After the sponge (17) is in place, the primary seat

(18) can be installed. Place the seat so the

rubber side is down towards the jet.

23. Reinstall the body (15) and body gasket (16).

Mount the body gasket on the primary pin boss

and two locating pins on the underside of the

body. Use two screws (10) to locate the body on

the heat exchanger body (19). Finger tighten the

screws to hold the two parts in place.

24. Replace the primary valve pin (14).

25. The new primary diaphragm assembly (13) is

ready to be put into place.

PPI-2 REV. JIMPCO Technologies Inc November, 2014

3030 South Susan St. Page 10 of 16

Santa Ana, CA 92704

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3030 S Susan Street, Santa Ana, CA 92704

Ph: +1 714 656 1200 Fax: +1 714 656 1400

26. Install the primary diaphragm (13) over the

locating pins and screw bosses, providing

alignment for the assembly of the springs (12)

and cover (11).

27. Place the two primary valve springs (12) on their

locating perches extruded from the backup plate

on the primary diaphragm (13).

28. Press the primary cover (11) in place over the

primary valve springs (12) and diaphragm

assembly (13). Insert two screws (9) and finger

tighten.

Note that two screws (9) securing the top of

primary cover (11) and in the center are different

from the other four screws (10).

29. Early Models: Replace four of the five screws

(10). DO NOT replace the one shown by the

arrow. Torque to 35-45 in-lbs. (4.0-5.1 Nm).

Torque the two inner screws (9) to 22-28 in-lbs.

(2.5-3.2 Nm).

Later Models: Replace all five screws (10) and

torque to 35-45 in-lbs. (4.0-5.1 Nm). Torque the

two inner screws (9) to 22-28 in-lbs. (2.5-3.2

Nm).

Skip to Step 35.

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