Plane-Power R1224 User manual

R1224 Regulator
Installation Instructions
Page: i
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
R1224 REGULATOR
INSTALLATION
INSTRUCTIONS
P/N 12-1001
Plane-Power Aero
2900 Selma Highway
Montgomery, AL 36108, USA
Tel: [phone] Fax: [phone]

R1224 Regulator
Installation Instructions
Page: ii
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
Revision Date Page Description
G09/08/14 1 First release of Drawing No. 12-1001 into Hartzell Engine
Technologies Design Data.
H09/08/14 1 Updated Master Drawing No. 12-1001 Title Block from Plane-
Power, LTD to Harzell Engine Technologies, LLC
J11/18/14 4 Changed Instruction for Continued Airworthiness to
Maintenance Instructions.
K02/01/17 2 Added website reference to Master Drawing No. 12-1001
L04/30/18 All Revised all pages to conform to iSpec 2200 Standards.
iAdded HET standard Cover Page.
ii Added Record of Revisions
iii Added Table of Contents
2-1 thru 2-7 Removed redundant (Table 1) information from Installation
Guides A thru M.
RECORD OF REVISIONS

R1224 Regulator
Installation Instructions
Page: iii
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
TABLE OF CONTENTS
Record of Revisions .....................................................................................................................................ii
Table 1 - Supplement Information Reference ...........................................................................................1-1
Figure 1 - Drawing No. 12-1001 Rev. K....................................................................................................1-4
Section 1 - Installation Instructions ...........................................................................................................1-5
Single Engine ............................................................................................................................................1-5
Multi-Engine...............................................................................................................................................1-6
Maintenance Instructions ..........................................................................................................................1-6
Section 2 - Installation Guides ..................................................................................................................2-1
Guide A .....................................................................................................................................................2-1
Guide B .....................................................................................................................................................2-1
Guide C .....................................................................................................................................................2-2
Guide D .....................................................................................................................................................2-2
Guide E .....................................................................................................................................................2-3
Guide F......................................................................................................................................................2-3
Guide G .....................................................................................................................................................2-4
Guide H .....................................................................................................................................................2-4
Guide I.......................................................................................................................................................2-5
Guide J ......................................................................................................................................................2-5
Guide K .....................................................................................................................................................2-6
Guide L......................................................................................................................................................2-6
Guide M.....................................................................................................................................................2-7

Some aircraft models were manufactured with different regulators and different wiring arrangements,
plugs, etc. Some installations can be accomplished using the basic R1224 Installation Instructions
in (12-1001 pages 2, & 3). Supplemental information for individual regulators is provided where
necessary. To account for model differences follow the steps below to ensure proper replacement:
1. Find your aircraft model and OEM P/N in the Installation Guide.
2. Follow basic Installation Instructions (12-1001) and the supplemental information when listed.
Note: All twin engines must replace both regulators OEM Part Number PP Part# Supplement
Information
Aircraft Parts and Development Corp
A InterAV 625-61623 R1224 Guide M
Alexandria Aircraft, LLC
14-19 InteraAv 625-61623 R1224 Guide M
American Champion
7ECA, 7GCAA, 7GCBC, 7KCAB, 8GCBC, 8KCAB FVR-4224, Lamar B-00371-14,
VR371
R1224 Guide B
Augustair, Inc
2150A InterAv 625-61623 R1224 Guide M
Beechcraft
V35B, V35B-TC, 36, A36, A36TC, B36TC Beechcraft P/N 60-389017-3, 36-
380056-5, 36-380096-1 ** R1224B Guide E
23, H35, J35, K35, M35, N35, P35, 35-33, 35-A33, 35-
B33, 35-C33, 35, A35, B35, C35, D35, E35, F35, G35,
35R
InterAv 625-61623 R1224 Guide M
Camair Aircraft Corporation – Fred Garcia
480 InterAv 625-61623 R1224 Guide M
Cessna Aircraft Company
182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 210,
210A, 210B, 210-5 (205), 185, 185A, 185B, 185C, 180,
180A, 180B, 180C, 180D, 180E, 180F, 180G, 206, P206
InterAv 625-61623 R1224 Guide M
152, A152, 172I, 172K, 172L, 172M, 172N, 172P, R172,
172RG, R172K, FR172, 177, 177A, 177B, 177RG, 180H,
180J, 180K, 182G, 182H, 182J, 182K, 182L, 182M, 182N,
182P, 182Q, 182R, R182, T182, TR182, 185D, 185E,
188, 188A, 188B, A188, A188A, A188B, T188C, P206A,
P206B, P206C, P206D, P206E, TP206A, TP206B,
TP206C, TP206D, TP206E, U206, U206A, U206B,
U206C, U206D, U206E, U206F, U206G, P206A, P206B,
P206C, P206D, P206E, TU206A, TU206B, TU206C,
TU206D, TU206E, TU206F, TU206G, 207, T207, 210B,
210C, 210D, 210E, 210F, 210G, 210H, 210K, 210L,
210M, 210N, P210N,T210F, T210G, T210H, T210J,
T210K, T210L, T210M, 182Q, 182R, T182, R182, TR182,
188, 188A, 188B, A188, A188A, A188B
Cessna 0750216-1, 611001-0101,
C611001-0102, C611001-0201, R1224 Basic
(Two Wire) Cessna C611004,
611005-
0101, C611005-0102, C611005-
0103
R1224 Guide B
(Four Wire) Cessna C611501-
0102, 611504-0103 ** R1224 Guide C
C611002-0102, 611002-0105,
611004-0101, C611004-0102, R1224 Guide L
TABLE 1 - SUPPLEMENT INFORMATION REFERENCE
** Requires purchase of adapter plate P/N: 12-1021
Page: 1-1
R12-1001 24-20-01
Rev. L: 09 Sept. 2018 © 2018 - Hartzell Engine Technologies - All rights reserved
R1224 Regulator
Installation Instructions

Note: All twin engines must replace both regulators OEM Part Number PP Part# Supplement
Information
Cessna Aircraft Company (cont’d)
337F, 337G, 337H, FT337P, T337F, T337G, T337H,
F337H, F337G, P337H
C611002-0102, C611002-0105 R1224 Guide B
310R, T310R, 335, 340, 340A, 402C,404, 414, 421,
421A, 421B, 421C
9910126-2, 9910126-3 R1224B Guide H
Commander
114, 114A, 114B, 114TC Rockwell B-00331-1 R1224 Guide A
114B, 114TC (4 Wire Regulators) Electrodelta
VR515G ** R1224 Guide C
Helio Aircraft LLC
H-250, 500 InterAv 625-61623 R1224 Guide M
KAWAD Company
Super-V Interav 625-61623 R1224 Guide M
Lockheed Aircraft
402-2 InterAv 625-61623 R1224 Guide M
Lake
LA4-200, Serial 500 and on, Lake Model 250 Electrodelta VSF-7202, VSF-7204 R1224 Guide G
LA-4, Colonial C1 & C2 InterAv 625-61623 R1224 Guide M
LAVIA
PA-25, PA-25-235, PA25-260, PA-25, PA-25-235, PA-28-
260 InterAv 625-61623 R1224 Guide M
Mooney
M20, M20A, M20B, M20C, M20D, M20E, M20F, M20G InterAv 625-61623 R1224 Guide M
Piper
PA-16, PA-16S, PA-18, PA-18S, PA-18 “105” (Special),
PA-18S-105 Special, PA-18A, PA-18 “125” (Army L-21A),
PA-18S “125”, PA-18AS “125”, PA-18-135, PA-18A”135”,
PA-18S-135, PA-18AS “135”, PA-18-150, PA-18A-150,
PA-18S-150, PA-18AS “150”, PA-19, PA-19S, PA-20, PA-
20S, PA-20 “115”, PA-20 “135”, PA-22, PA-22-108, PA-
22-135, PA-22S-135, PA-22-150, PA-22S-150, PA-22-60,
PA-22S-160, PA-28-140, PA-28-150, PA-28-160, PA-28-
180, PA-28-235, PA-28S-160, PA-28S-180, PA-28R-180,
PA-28R-200, PA-12, PA-12S, PA-18A (Restricted),
PA-8A-135Restricted, PA-18A “150” Restricted PA-30
InterAv 625-61623 R1224 Guide M
PA-28-140 (Cherokee Cruiser), PA-28-150, PA-28-160,
A28-180, PA-28R-180, PA-28R-200, PA-28-151, PA-28-
161, PA-28-181, PA-28-201T, PA-28-R201, PA-8R-201T,
PA-28-236, PA32-300, PA-32-R300, PA-32 RT-300,
PA32-301, PA-32-301T
Piper 765-055, 68804-03 (-04 & -05) R1224 Guide A
PA-34-200 Piper 584 340, VR710 ** R1224 Guide F
Table 1 - Supplement Information Reference (cont’d)
** Requires purchase of adapter plate P/N: 12-1021
Page: 1-2
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
R1224 Regulator
Installation Instructions

Note: All twin engines must replace both regulators OEM Part Number PP Part# Supplement
Information
Piper (cont’d)
PA-31, PA-31-300, PA-31-325, PA-31-350, PA-23,
PA-23, PA-23-160, PA-23-235, PA-23-250, PA-E23-
250,PA-34-200, PA34-200T, PA-34-220T, PA-44-180,
PA44-180T
Piper 550 390, 550 393, 84199-
006, 84199-007 R1224B Guide H
PA-28-140 (Cherokee Cruiser), PA-28-150, PA-28-160,
PA28-180, PA-28-
235
756-055 R1224 Basic
PA-32-300, PA-32RT-300, PA-32-301, PA-38-301T, PA-
34-200
Piper 765-055, 68804-03 (-04 &
-05) R1224 Guide A
PA-23, PA-23-160, PA-23-235, PA23-250, PA-E23-250,
PA-30 InterAv 625-61623 R1224 Guide M
Interceptor
200, 200A, 200B, 200C, 200D InterAv 625-61623 R1224 Guide M
Revo, Incorporated
Colonial C1, Colonial C2, Lake LA-4 InterAv 625-61623 R1224 Guide M
NAVION
Navion D, Navion E, Navion F, Navion G InterAv 625-61623 R1224 Guide M
SOCATA Group Aerospatiale
GA-7 Lamar Paralleling Regulators
(Twin Engine) B-00288 R1224B Guide H
True Flight Holdings, LLC
AA-5, AA-5A, AA-5B C6FF-10316BA, D4FF-10316-BA R1224 Guide D
AA-1B Prestolite FVR-4004, LW- 11357,
Wico X17990, X16300B R1224 Guide A
AA-1C Wico X17990 R1224 Guide A
AG-5B R1224 Guide J
Vulcanair, S.p.A
P68C, P68C-TC, P68 “Observer” P68TC “Observer”,
P68 “Observer 2” Vulcanair NOR7.375-3 R1224B Guide H
Table 1 - Supplement Information Reference (cont’d)
Page: 1-3
R12-1001 24-20-01
Rev. L: 09 Sept. 2018 © 2018 - Hartzell Engine Technologies - All rights reserved
R1224 Regulator
Installation Instructions

Figure 1 - Drawing No. 12-1001 Rev. L
Page: 1-4
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
R1224 Regulator
Installation Instructions

Page: 1-5
R12-1001 24-20-01
Rev. L: 09 Sept. 2018 © 2018 - Hartzell Engine Technologies - All rights reserved
R1224 Regulator
Installation Instructions
SECTION 1 - INSTALLATION INSTRUCTIONS
WARNING: TO PREVENT DAMAGE TO AIRCRAFT OR UNIT, READ AND UNDERSTAND ALL
INSTRUCTIONS PRIOR TO APPLYING POWER TO UNIT.
Current applications and specic regulator conversion/installation guides are available online at
www.planepower.aero or www.hartzell.aero
NOTE: Use appropriately sized M7928/5 splices, M7981/1, ring lugs, and MIL-W-22759/16 wire.
Single Engine
1. Remove existing regulator and solid-state over-voltage module (if installed).
2. Install R1224/R1224B Regulator in same location as regulator being replaced. If mounting holes do not align add
mounting holes as required using acceptable methods, techniques and practices.
3. Connect GRND terminal to aircraft ground. It is critical that the regulator ground is connected to airframe ground.
Without this ground, the regulator and its internal overvoltage protection cannot function.
4. Connect the FLD terminal to the FIELD (brush) terminal of the alternator.
5. Connect the ENABLE terminal to the regulator/eld power source (the wire from the cockpit ALTERNATOR FIELD
switch which is fed from a 7.5 max amp breaker). Note: In order for the over voltage protection circuit to operate the
enable terminal must be connected to an operational circuit breaker. (In the event of an over-voltage condition the
over-voltage protection circuit will cause the circuit breaker to trip removing all power from the regulating circuit.) Do
not install R1224/R1224B in any aircraft that has an automatic resetting circuit breaker in the enable line.
6. If the regulator being replaced has a connection to the AUX terminal on the alternator, connect this wire to the AUX
terminal. If not, install a jumper wire between AUX and ENABLE. Note: No connection to AUX terminal is necessary
if an alternator out lamp is not installed.
NOTE: For superceded versions of the R1224/R1224B (Rev B & previous) indicated by silver label,
step 7 does not apply and no sense terminal exists. Wiring of a ‘Sense’ terminal on these
regulators will result in damage to the regulator.
7. If an ALTERNATOR out lamp is installed in the aircraft and is to be actuated by the R1224/R1224B regulator Connect
the negative wire of the lamp to the LAMP terminal of the R1224/R1224B regulator.
8. Remove the regulator cover and ensure that the internal jumper #1 and jumper #2 are set to the proper voltage for
the aircraft system. Refer to Figure 1.
9. With the engine running and the alternator switch turned on, using a small screwdriver, set the regulator’s voltage
adjustment so that the buss voltage, as measured at the ENABLE terminal is the desired value. Refer to aircraft
maintenance manual or battery manufacturer’s data for proper voltage setting.
10. Reinstall the R1224/R1224B cover.

Page: 1-6
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
R1224 Regulator
Installation Instructions
Multi-Engine
1. For both regulators, perform steps A thru J of the Single Engine procedure above.
2. Choose one regulator as the Master. It can be either. Connect the OUT terminal of the Master Regulator to
the IN terminal of the other Regulator.
Maintenance Instructions
1. Every 100 hours time-in-service or at the annual aircraft inspection, whichever occurrs rst, check voltage
level output. If the voltage level does not meet the Aircraft Manufacturer’s requirement, adjust the voltage as
per section 1-1 step I.
Inspect Regulator and wiring for secure electrical connectinos and physical connection to the air
frame.
To maintain inherent protection from HIRF and lightning, as well as over voltage protection of the
aircraft electrical system, ensure the cround connection between terminal 1 (GRND) and air
frame ground is less than 0.1 OHM.

Page: 2-1
R12-1001 24-20-01
Rev. L: 09 Sept. 2018 © 2018 - Hartzell Engine Technologies - All rights reserved
R1224 Regulator
Installation Instructions
Guide A
These regulators were connected via 3 color-coded
wires. Cut the wires near the regulator and crimp
appropriate ring lugs onto the wires.
1. Remove old regulator.
2. Ensure that the R1224 jumpers are set properly
for the aircraft voltage. Verify aircraft electical
system voltage. See Plane-Power R1224
Installation Drawing 12-1001.
3. Install R1224 Regulator.
4. Connect the Black wire to R1224 #1 (GND).
5. Connect the Yellow (Field) wire to R1224 #2
(Field).
6. Connect the Red (Power) wire to R1224
#3(Enable).
7. Jumper R1224 #3 (Enable) to #4 (Aux).
8. For R1224 Rev C and later (see drawing):
Remove jumper between #8 (Sense) and #3
(Enable). Connect the A (Sense) wire to R1224
#8 (Sense).
If the aircraft was equipped with an overvoltage relay, it
may be removed, as the R1224 has internal overvoltage
protection. Splice together the power input and output
wires that went to the overvoltage regulator.
Adjust voltage as necessary with engine running and
alternator enabled.
Guide B
These regulators were connected via 3 color-coded
wires. Cut the wires near the regulator and crimp
appropriate ring lugs onto the wires.
1. Remove old regulator.
2. Ensure that the R1224 jumpers are set properly
for the aircraft voltage. Verify aircraft electical
system voltage. See Plane-Power R1224
Installation Drawing 12-1001.
3. Install R1224 Regulator.
4. Connect the Black wire to R1224 #1 (GND).
5. Connect the Blue (Field) wire to R1224 #2 (Field).
6. Connect the Red (Power) wire to R1224 #3
(Enable).
7. Jumper R1224 #3 (Enable) to #4 (Aux).
8. For R1224 Rev C and later: Remove jumper
between #8 (Sense) and #3 (Enable). Connect
the A (Sense) wire to R1224 #8 (Sense).
If the aircraft was equipped with an overvoltage relay, it
may be removed, as the R1224 has internal overvoltage
protection. Splice together the power input and output
wires that went to the overvoltage regulator.
Adjust voltage as necessary with engine running and
alternator enabled.
SECTION 2 - INSTALLATION GUIDES

Page: 2-2
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
R1224 Regulator
Installation Instructions
Guide C
Use R1224 and 12-1021 Adaptor Plate.
These regulators were connected via 5 color-coded
wires. Cut the wires near the regulator and crimp
the provided ring lugs onto the wires.
1. Remove old regulator.
2. Ensure that the R1224 jumpers are set properly
for the aircraft voltage. Verify aircraft electical
system voltage. See Plane-Power R1224
Installation Drawing 12-1001.
3. Install R1224 using 12-1021 Adaptor Plate.
4. Connect the Black wire to R1224 #1 (GND).
5. Connect the Blue (Field) wire to R1224 #2
(FIELD).
6. Connect the Red (Power) wire to R1224 #3
(ENABLE).
7. Connect the Yellow (Lamp) wire to R1224 #5
(LAMP).
8. Jumper R1224 #3 (ENABLE) to #4 (AUX).
9. For R1224 Rev B and earlier: Insulate the end
of the Orange (Sense) wire and stow it safely.
For R1224 Rev C and later: Remove jumper
between #8 (SENSE) and #3 (ENABLE).
Connect the Orange (Sense) wire to R1224 #8
(SENSE)
10. Insulate the end of the White (OV Lamp) wire
and stow it safely. (The R1224 indicates Over
Voltage and Low Voltage on a common lamp
connected to R1224 #5.)
11. Adjust voltage as necessary with engine running
and alternator enabled.
Guide D
The Ford regulators were connected via a flat plastic plug.
Label the wires and cut the plug off. Marking the wires is
important for reconnection. Crimp the appropriate ring lugs
onto the wires.
1. Remove old regulator.
2. Ensure that the R1224 jumpers are set properly
for the aircraft voltage. Grumman AA-5, AA-
5A and AA-5B are 14V. Single-engine Cessna
aircraft were 14V or 28V – Verify aircraft
electical system voltage. See Plane-Power
R1224 Installation Drawing 12-1001
3. Install R1224. The large holes in the base match
the mounting holes used to mount the Ford
regulator. Some mounting locations may have
protrusions under the regulator, as the Ford
units had a hollow area underneath. If this is
the case, mount the R1224 on standoffs or use
the 12-1021 Adaptor Plate. The 12-1021 can be
purchased from Plane-Power
4. Connect the G (Ground) wire to R1224 #1
(GRND).
5. Connect the Blue (Field) wire to R1224 #2 (Field).
6. Connect the S (Supply) wire to R1224 #3
(ENABLE).
7. Jumper R1224 #3 (Enable) to #4 (AUX).
8. For R1224 Rev B and earlier: Insulate the end of
the A (Sense) wire and stow it safely.
For R1224 Rev C and later: Remove jumper
between #8 (SENSE) and #3 (ENABLE).
Connect the Orange (Sense) wire to R1224 #8
(SENSE)
9. Adjust voltage as necessary with engine running
and alternator enabled.

Page: 2-3
R12-1001 24-20-01
Rev. L: 09 Sept. 2018 © 2018 - Hartzell Engine Technologies - All rights reserved
R1224 Regulator
Installation Instructions
Guide E
There is a round connector on these Beechcraft regulators.
A round plug on a cable is plugged into the connector on the
regulator.
Use R1224B with the Plane-Power 12-1016 Installation Aid
(round connector on a short cable. Purchase the 12-1016
connector from Plane-Power).
1. Remove old regulator.
2. Ensure that the R1224B jumpers are set
properly for the aircraft voltage. Verify aircraft
electical system voltage. See Plane-Power
R1224 Installation Drawing 12-1001.
3. Jumper R1224B #3 (Enable) to #4 (Aux).
4. For R1224B Rev. C and later: Ensure that
there is a jumper between #8 (SENSE) and #3
(ENABLE).
5. Unplug the cable from the regulator. Remove old
regulator
6. Install R1224 in the location from which the
Beechcraft regulator was removed.
7. Connect the cable to the round connector on the
12-1016 Installation Aid.
8. Adjust voltage as necessary with engine running
and alternator enabled.
Guide F
Use two R1224 regulators set for 14V. Use the 12-1021
adaptor plate for mounting (which can be purchased from
Plane-Power). Both regulators must be replaced.
1. Ensure that the R1224 jumpers are set properly
for the aircraft voltage. Verify aircraft electi-
cal system voltage. See Plane-Power R1224
Installation Drawing 12-1001.
2. Cut the wires close to the regulator case of the
Electrodelta or Wico regulators and crimp one
appropiate ring lug with the R1224 on each Red
and Blue (or Yellow) wire. Remove remaining
wires or insulate the ends.
3. Remove the old regulators and the associated
Over Voltage Relays (The R1224 has internal
over voltage control so the original units are not
needed).Connect the Blue (Field) wire to R1224
#2 (Field).
4. Install R1224 regulators with 12-1021 adaptor
plates in the location from which the original
regulators were removed. Ground is obtained
from the mounting so be sure that the regulators
are mounted securely. It is advisable to connect
a wire from #1 (Ground) of each R1224 to
aircraft ground.
5. Connect each Blue (or Yellow) wire to #2 (Field)
of the corresponding R1224.
6. Connect each Red wire to #3 (Enable) of the
corresponding R1224.
7. Ensure that there is a jumper between #3
(Enable) and #4 (Aux) of each R1224B. For
R1224B Rev C and later: Ensure there is a
jumper between #3 (Enable) and #8 (Sense) of
each R1224B.
8. Connect a wire from the right alternator’s R1224
#6 (In) to the left alternator’s R1224 #7 (Out).
This designates the right R1224 as Slave and
the left R1224 as Master for load-sharing oper-
ation.
Lamp Modification
The PA-34-200 is equipped with a press-to-test over voltage
Lamp for each alternator/regulator.

Page: 2-4
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
R1224 Regulator
Installation Instructions
Guide G
These regulators were connected via screw terminals. Label
the wires and remove from regulator terminals. Labeling the
wires is important for reconnection. Cut the ring lugs off of the
wires crimp the provided (smaller) ring lugs onto the wires.
1. Remove old regulator.
2. Ensure that the R1224 jumpers are set for 14V.
See Plane-Power R1224 Installation Drawing
12-1001.
3. Install R1224 by drilling new mount holes in air-
craft or into 12-1021 Adaptor Plate to match the
original regulator mount holes in the aircraft.
4. Connect the wire marked Ito R1224 #3 (EN-
ABLE).
5. Connect the wire marked Fto R1224 #2 (Field).
6. Jumper R1224 #3 (Enable) to #4 (Aux).
7. Ensure that there is a jumper between R1224 #8
(Sense) and #3 (Enable).
8. It is advisable to connect a wire between the air-
craft ground (one of the regulator mounting bolts
is a good point) and R1224 #1 (GRND).
Adjust voltage as necessary with engine
running and alternator enabled.
Guide H
Use 2 R1224B as the mounting holes match the Lamar
regulators. Both regulators must be replaced.
1. Ensure that the R1224B internal jumpers are set
properly for the aircraft voltage. See Plane-Pow-
er R1224 Installation Drawing 12-1001.
2. Mark the wires on the Lamar regulators and
disconnect them. Wire Identication is
important for reconnection.
3. Remove the old regulators. If the aircraft as
equipped with Lamar Over voltage Relays you
can remove them if you desire. (The R1224B has
internal over voltage control so the Lamar units
are not needed).
4. Install R1224B regulators in the location from
which the Lamar regulators were removed.
5. If the ring lugs on the wires are too large, cut
them off and crimp on the provided lugs.
6. Connect each Gwire to #1 (Ground) of the
corresponding R1224B.
7. Connect each Fwire to #2 (Field) of the
corresponding R1224B.
8. Connect each Sor Bwire to #3 (Enable) of the
corresponding R1224B.
9. Ensure that there is a jumper between #3 (Enable)
and #4 (Aux) of each R1224B. For R1224B Rev
C and later: Ensure there is a jumper between #3
(Enable) and #8 (Sense) of each R1224B.
10. Connect the paralleling wire of the right alternator
regulator to #6 (IN), there by designating
this regulator as the SLAVE for load-sharing
operation.
11. Connect the paralleling wire of the left alternator
regulator to #7 (OUT), thereby designating
this regulator as the MASTER for load-sharing
operation.
Voltage Adjustment:
Remove the regulator covers. With the engines running,
nable only the left (MASTER) alternator and regulator. Make
sure that the right regulator & alternator are disabled. Adjust
the MASTER R1224B for the desired voltage.
Disable the left (MASTER) alternator and regulator and
enable the right (SLAVE) R1224B. Make sure that the left
regulator & alternator are isabled. Adjust the SLAVE R1224B
for the desired voltage.
Replace the regulator covers.

Page: 2-5
R12-1001 24-20-01
Rev. L: 09 Sept. 2018 © 2018 - Hartzell Engine Technologies - All rights reserved
R1224 Regulator
Installation Instructions
Guide I
Prepare the replacement regulator:
1. Use the R1224 regulator and a 12-1021
mounting plate (which can be purchased from
Plane-Power). Ensure regulator jumpers are set
to match aircraft battery voltage (12V or 24V).
2. Ensure that the factory installed jumper between
SENSE and ENABLE is in place.
Prepare the installation:
1. Cut the wires at the regulator body and new ring
lugs provided with the R1224 regulator.
2. Unplug the wire connector from the aircraft plug.
3. Connect the ring lugs to the R1224 regulator as
shown below:
- Red to ENABLE
- Blue to Field
- White to AUX
- Yellow to LAMP
4. Mount the R1224 regulator on the 12-1021 plate
using appropriate AN or MS hardware.
Replace the regulator:
1. Remove the original regulator from the aircraft.
2. Install the R1224 regulator on the 10-1021 plate
in the same location using existing hardware.
3. Plug the harness from the R1224 the aircraft
plug.
4. Remove the alternator lamp lead from the AL-
TERNATOR switch on the aircraft and connect it
to the aircraft positive BUS via a 1A in-line fuse
& holder.
The installation is complete after testing.
Guide J
The AG-5B regulators were connected via a 4-pin plastic plug
and a ground wire with a large ring-lug. Cut the wires near
the regulator and crimp the provided ring lugs into the wires.
Remove old regulator.
1. Ensure that the R1224 jumpers are set for 28V.
See Plane-Power R1224 Installation Drawing
12-1001.
2. Install R1224 using the 12-1021adaptor plate.
Put the large ring lug on the black wire under
one of the mounting bolts.
3. Connect the Black (Ground) wire to R1224 #1
(GND).
4. Connect the Blue (Field) wire to R1224 #2
(Field).
5. Connect the Red (Enable) wire to R1224 #3
(Enable).
6. Connect the Yellow (Lamp) wire to R1224 #5
(Lamp)
7. Jumper R1224 #3 (Enable) to R1224 #4 (Aux).
8. For R1224 Rev C and later: Ensure that there
is a jumper between R1224 #3 (Enable) and #6
(Sense).
Lamp Modification:
1. Remove wire EL36A20 from the output side
of the Alternator Control circuit breaker and
connect it to the input side of the circuit breaker
through a 1A fuse.
2. Adjust voltage as necessary with engine running
and alternator enabled.
The installation is complete after testing.

Page: 2-6
24-20-01 12-1001
© 2018 - Hartzell Engine Technologies - All rights reserved Rev. L: 09 Sept. 2018
R1224 Regulator
Installation Instructions
Guide K
Prepare the replacement regulators:
1. Use two R1224B regulators. Ensure regulator
jumpers are set to match aircraft battery voltage
(12V or 24V).
2. Ensure that the factory jumper between SENSE
and ENABLE is in place on both R1224B
regulators.
3. Add a jumper between SENSE and AUX on both
R1224B regulators.
Prepare the installation:
1. Tag the wires to both LAMAR regulators: BUS,
FIELD, GND, PAR.
2. Cut the terminals off the end of these wires and
install new ring lugs provided with the R1224B
regulators.
Replace the regulators:
1. Remove the Lamar regulators from the aircraft.
2. Install the R1224B regulators in the same
location using existing hardware.
3. Connect the wires removed from the LAMAR
regulators to the corresponding replacement
R1224B:
- GND to GRND
- BUS to ENABLE
- FIELD to FLD
4. Choose one R1224B as “MASTER” and connect
the PAR wire that was removed from one LAMAR
regulator to the OUT terminal.
5. Connect the other PAR terminal to IN on the
remaining R1224B regulator.
The installation is complete after testing.
Guide L
Prepare the replacement regulator:
1. Use the R1224 regulators. Ensure regulator
jumpers are set to match aircraft battery voltage
(12V or 24V).
2. Remove the factory jumper between SENSE and
ENABLE.
3. Remove the old regulators. If the aircraft as
equipped with Lamar Over voltage Relays you
can remove them if you desire. (The R1224B has
internal over voltage control so the Lamar units
are not needed).
4. Add a jumper between ENABLE and AUX.
Prepare the installation:
1. Cut the terminals off the end of these wires and
install new ring lugs provided with the R1224
regulator.
Replace the regulator:
1. Remove the FORD-type regulator from the
aircraft.
2. Install the R1224 regulators in the same location
using existing hardware.
3. Connect the wires removed from the FORD
type regulator to the corresponding replacement
R1224:
- Ato SENSE
- Sto ENABLE
- Fto FLD
The installation is complete after testing.

Page: 2-7
R12-1001 24-20-01
Rev. L: 09 Sept. 2018 © 2018 - Hartzell Engine Technologies - All rights reserved
R1224 Regulator
Installation Instructions
Guide M
INTERAV These are installed on aircraft, which have
been converted to an alternator from a generator by STC
SA334SW.
Use R1224.
Labeling the wires is important for reconnection. If the ring
lugs are damaged, crimp the provided ring lugs onto the wires.
1. Remove Interav regulator and over voltage relay.
The R1224 has internal over voltage protection,
so the Interav over voltage relay is no longer
needed.
2. Ensure that the R1224 jumpers are set for 14V.
See Plane-Power R1224 Installation Drawing
12-1001. Add a jumper between SENSE and
AUX on both R1224B regulators.
3. Install R1224 in the location from which the
InterAv regulator was removed.
4. Remove the wires on both terminals of the
ALTERNATOR switch (on the aircraft panel).
Connect one terminal of the switch to the 5A
breaker where the wire to “Red-Pos” of the
Interav OV Relay was connected. Connect the
other terminal of the switch to R1224 #3 (Enable).
5. Connect the GND (Ground) wire to R1224 #1
(GRND).
6. Connect the Field terminal of the alternator to
R1224 #2 (FLD).
7. Jumper R1224 #3 (Enable) to #4 (AUX). For
R1224 Rev C and later: Ensure that there is
a jumper between R1224 #8 (SENSE) and #3
(ENABLE).
8. Remove all disconnected and unused wires.
9. If a warning lamp is incorporated, connect one
terminal of the lamp to R1224 #5 (Lamp) and
the other terminal of the lamp to the aircraft bus
through a 1A fuse or breaker. Be sure the lamp
is a 100-milliamp bulb or it will not work properly.
10. Adjust voltage as necessary with engine running
and alternator enabled.
The installation is complete after testing.