09/16/96
MGA and RGA SERIES
SPLIT-SHAFT
PTO DRIVE GEARBOX
INSTALLATION MANUAL
All Hale products are quality components: ruggedly designed, accurately machined, precision inspected, carefully assembled and
thoroughly tested. In order to maintain the high quality of your unit, and to keep it in a ready condition, it is important to follow the
instructions on care and operation. Proper use and good preventive maintenance will lengthen the life of your unit. ALWAYS
INCLUDE THE UNIT SERIAL NUMBER IN CORRESPONDENCE.
HALE PRODUCTS, INC. l A Unit of IDEX Corporation l 700 Spring Mill Avenue l Conshohocken, PA 19428 l TEL: 610-825-6300 l FAX: 610-825-6440
MANUAL P/N 029-0020-46-0, REV A, © 1996 HALE PRODUCTS, INC., PRINTED IN U.S.A.
Hale Products cannot assume responsibility for product failure resulting from improper maintenance
or operation. Hale Products is responsible only to the limits stated in the product warranty. Product
specifications contained in this material are subject to change without notice.
SPLIT-SHAFT PTO GEARBOX
TABLE OF CONTENTS
Section Page
1 SAFETY ...................................................................................................................1
2 DESCRIPTION.........................................................................................................2
3 DRIVE LINE INSTALLATION PLANNING................................................................8
4 INSTALLATION........................................................................................................9
NOTE TO INSTALLER
IMPORTANT: Please provide two copies of the Split-Shaft PTO Gearbox manual to the end user of
the equipment. For additional manuals, contact Hale Products, Inc. at (610) 825-6300.
Ask for Manual P/N 029-0020-46-0.
iINSTALLATION MANUAL
SAFETY
SPLIT-SHAFT PTO GEARBOX
Before attempting to install a Hale Gearbox, read all of
the following safety precautions and follow carefully.
1. WARNING: The gearbox is heavy. When
lifting gearbox into position use proper lifting
devices to support the gearbox.
2. WARNING: Any electrical system has the
potential to cause sparks. Take care to
eliminate explosive or hazardous
environments during installation or service.
3. CAUTION: Before lay out and installation
of the drive line, consult apparatus and/or
drive line component manufacturer for
guidance in drive line design.
4. CAUTION: Drive shafts less than 15
inches (381 mm) long should have no more
than 1
5. CAUTION: The gearboxes are shipped
without oil. Before placing the apparatus in
service fill the gearbox to the proper level
with SAE EP90 or SAE 80W-90 gear oil.
o
30’ angularity.
6. CAUTION: Make sure interlocks and
indicator lights required by NFPA standards
are properly installed.
7. CAUTION: DO NOT exceed the rated
current of the shift switch, 4 AMPS at 12
VDC, when connecting other devices.
8. CAUTION: The gearbox IS NOT a “hot
shift” device. Before shifting from ROAD to
PUMP or back make sure the apparatus
drive shaft has stopped turning. Attempting
to shift with the drive shaft turning will result
in damage to the gears.
9. CAUTION: When driving high inertia
auxiliary equipment such as a generator,
make sure the equipment shaft stops
rotating before shifting back to ROAD
position. Shifting to road position before the
shaft stops turning will result in damage to
gears.
1INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
DESCRIPTION
Hale MGA and RGA Series Split-Shaft PTO
gearboxes provide a cost effective means
for driving a pump, generator, air
compressor, winch or other auxiliary
equipment from the truck engine without
resorting to high cost, heavy, dedicated
engines.
The gearboxes are heavy duty drive units
capable of withstanding drive line input
torque during road use of up to 16,000 lb-ft
(21,693 N-m).
The gearboxes are installed in a midship
position on the truck between two sections
of a split drive shaft. (See figure 1)
Mounting holes on the gearboxes permit
attaching the gearbox directly to the truck
frame or through the use of brackets
manufactured by the gearbox installer. The
main drive shaft sections connect to the
gearboxes by drive flanges piloted and
predrilled for compatibility with 1600, 1700
and 1800 series Spicer drive flanges.
Each gearbox model (the MGA and RGA)
can be ordered with the rear drive flange
blanked off for operation with a transmission
mounted PTO. When the PTO drive option is
used the gearbox is not mounted in the
apparatus drive line. (Refer to figure 1)
When shifted from road to auxiliary output
operation the RGA gearbox transmits up to
2300 lb-ft (3188 N-m) torque from the
apparatus drive shaft to the 2 inch by 10
spline rear facing auxiliary drive shaft to
drive the auxiliary equipment.
The MGA gearbox transmits up to 1200 lb-ft
(1627 N-m) torque from the apparatus drive
shaft to the auxiliary drive shaft. The
auxiliary drive shaft on the MGA gearbox
has a 1-½ inch by 10 spline on one end and
3
a1-
/8 inch by 10 spline on the other and
can drive two pieces of auxiliary equipment
simultaneously. The MGA gearbox can be
configured with the auxiliary drive shaft
positioned with either spline facing in either
the front or rear position. Additionally the
MGA gearbox can be mounted in either a
vertical or horizontal position.
Chrome nickel steel spur gears provide the
necessary rotational energy transmission.
The auxiliary drive shaft of each gearbox is
rigidly supported by two ball bearings with
double lip oil seals to prevent gearbox
contamination.
CAUTION: The gearbox IS NOT a “hot
shift” device. Before shifting from ROAD
to PUMP or back make sure the
apparatus drive shaft has stopped
turning. Attempting to shift with the
drive shaft turning will result in damage
to the gears.
The standard gearboxes are shifted from
road to auxiliary output operation with a
manual shift lever. Other shift options
available are vacuum power and air power
shift mechanisms. Movement of the shift
controls while the apparatus transmission is
in neutral will engage the drive shaft to
drive the auxiliary equipment. After shifting
the gearbox from road to auxiliary output
mode, placing the transmission back into
drive gear provides power to the gearbox.
Indicator lights mounted in the driver’s
compartment and at the pump operator’s
panel provide visual indication as to when
the gearbox has been shifted from road to
auxiliary output mode and when all
interlock conditions have been met for safe
operation. Electrical signals for these lights
are provided by switches that are actuated
by the gearshift shaft.
2
INSTALLATION MANUAL
APPARATUS
ENGINE
SPLIT-SHAFT PTO GEARBOX
AUXILIARY
DRIVE SHAFT
APPARATUS
TRANSMISSION
FRONT DRIVE
SHAFT
SECTION
RGA
GEARBOX
RGA GEARBOX DRIVE LINE MOUNTED
APPARATUS
ENGINE
APPARATUS
TRANSMISSION
FRONT DRIVE
SHAFT
SECTION
REAR DRIVE
SHAFT
SECTION
AUXILIARY
DRIVE SHAFT
MGA
GEARBOX
REAR DRIVE
SHAFT
SECTION
MGA GEARBOX DRIVE LINE MOUNTED
APPARATUS
ENGINE
TRANSMISSION
MOUNTED PTO
GEARBOX
DRIVE SHAFT
APPARATUS
TRANSMISSION
AUXILIARY
DRIVE SHAFT
MGA
GEARBOX
APPARATUS
DRIVE SHAFT
TRANSMISSION PTO DRIVEN GEARBOX (MGA SHOWN)
Figure 1. Gearbox Location in Drive line
3INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
CAUTION: When driving high inertia
auxiliary equipment such as a generator,
make sure the equipment shaft stops
rotating before shifting back to ROAD
position. Shifting to road position before
the shaft stops turning will result in
damage to gears.
The gearbox is shifted back to road position
by placing the apparatus transmission in
neutral and waiting until auxiliary
component shaft has stopped turning.
Movement of the shift controls while the
apparatus transmission is in neutral will
engage the drive shaft to drive the
apparatus.
NOTE: In most cases cooling water must
be connected to the gearbox when the
power required for the auxiliary
component is 200 hp (149 kw) or greater.
Gearbox coolers permit operation in a wide
range of ambient temperatures. An
integral gearbox cooler is standard on the
RGA gearbox and an optional auxiliary
cooler can be ordered to attach to the
MGA gearbox. For operation in temperate
climates the gearbox cooler must be
connected when the power required for
the auxiliary component is 200 hp (149 kw)
or greater. When apparatus is operated in
environments where high ambient
temperatures are normally encountered,
such as tropical regions, the gearbox cooler
must be connected when the power
requirement for auxilary components is less
than 200 hp (149 kw). Conversely when the
apparatus is normally operated in
environments where low ambient
temperatures are encountered the
gearbox cooler may not be required unless
the auxiliary equipment power requirement
is well above 200 hp (149 kw). ALWAYS
AIR VENT
OPTIONAL
COUNTER
FRONT
DRIVE
FLANGE
SHIFTING
SHAFT
SUPPORT BRACKET
MOUNTING HOLES
(5/8-11 UNC x 1 INCH DEEP)
SPEED
OIL DRAIN
PLUG
GEARBOX MOUNTING HOLES
(5/8-11 UNC x 1 INCH DEEP)
TO FRONT OF APPARATUS
AUXILIARY DRIVE
SHAFT
(2 INCH x 10 SPLINE)
REAR
DRIVE
FLANGE
SUPPORT BRACKET
MOUNTING HOLES
(5/8-11 UNC x 1 INCH DEEP)
COOLING
COOLING
WATER
CONNECTION
OIL FILL
AND LEVEL
PLUG
GEARSHIFT SHAFT CAP AND
SHIFT INTERLOCK SWITCHES
REAR
DRIVE
FLANGE
CONNECTION
LOOKING TOWARDS FRONT OF APPARATUS
WATER
SERIAL
NUMBER
PLATE
Figure 2. RGA Gearbox Component Identification
4
INSTALLATION MANUAL
consult with Hale Products to determine
gearbox cooler requirements.
Cooling water for the gearbox cooler is
provided from the fire pump discharge or
the apparatus engine cooling system.
The RGA Series Split-Shaft gearbox is
available with five different gear ratios to
provide a wide range of output speeds
from a large variety of engine and
transmission combinations. The available
RGA models and ratios are as follows:
MODEL RATIO
RGA-23 2.28:1
RGA-21 2.05:1
SPLIT-SHAFT PTO GEARBOX
RGA-19 1.86:1
RGA-17 1.71:1
RGA-15 1.58:1
The MGA Series Split-Shaft gearbox is
available with seven different gear ratios to
provide a wide range of output speeds
from a large variety of engine and
transmission combinations. The available
MGA models and ratios are as follows:
MODEL RATIO
MGA-30 3.00:1
MGA-26 2.67:1
MGA-21 2.18:1
MGA-19 1.92:1
MGA-17 1.71:1
MGA-12 1.27:1
MGA-10 1.00:1
5INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
SPECIFICATIONS:
Final Drive Ratios Available:
1.58:1, 1.71:1, 1.86:1, 2.05:1,
2.28:1
MGARGA
3.00:1, 2.67:1, 2.18:1, 1.92:1,
1.71:1, 1.27:1, 1.00:1
Weight:
Dimensions:
Overall Height:
Overall Width:
Face-to-face Length Between
Input Flanges:
Bottom of Gearbox to Center of
Input Flange:
Center of Input Flange to
Center of Output Shaft:
Maximum Input Speed
(RPM):
325 lbs (147 kg)
25-9/16 inches (649 mm)
16 inches (406 mm)
14-7/16 inches (367 mm)
7 inches (178 mm)
RGA-23: 13-
RGA-21: 13-9/16 inches (344 mm)
RGA-19: 13-¾ inches (349 mm)
RGA-17: 13-15/16 inches (354 mm)
RGA-15: 14-1/8 inches (359 mm)
RGA-23: 2630
RGA-21: 2920
RGA-19: 3220
RGA-17: 3500
RGA-15: 3800
3
/8 inches (340 mm)
200 lbs (91 kg)
19 inches (483 mm)
11-½ inches (292 mm)
13 inches (330 mm) with optional
oil cooler
7
/16 inches (367 mm)
14-
MGA-30, MGA-26, MGA-21,
MGA-19, MGA-17: 6-¾ inches
(171 mm)
MGA-12, MGA-10: 7 inches
(178 mm)
MGA-30, MGA-26, MGA-21,
MGA-19, MGA-17: 9-½ inches
(241 mm)
MGA-12, MGA-10: 9-¼ inches
(235 mm)
MGA-30: 2090
MGA-26: 2350
MGA-21: 2880
MGA-19: 3270
MGA-17: 3670
MGA-12: 4940
MGA-10: 6270
Maximum Auxiliary Drive
2300 lb-ft (3118 N-m)
1200 lb-ft (1627 N-m)
Shaft Torque:
Maximum Input Torque:
Auxiliary Drive Shaft:
Oil Capacity:
16,000 lb-ft (21,693 N-m)
2 inch x 10 spline
8 pints (3.8 Liters)
16,000 lb-ft (21,693 N-m)
1-½ inch x 10 spline
3
1-
/8 inch x 10 spline
Vertical: 5-½ pints (2.6 Liters)
[MGA-12, MGA-10: 7 pints (3.3
Liters)]
Horizontal: 6 pints (2.8 Liters)
Oil Type: SAE EP 90 (or 80W-90)
Drive Flanges: One piece shaft/flange design. Flanges are piloted and predrilled for compatibility with
1600, 1700 and 1800 series Spicer Flanges. Drive shaft is 2-¾ inches (70 mm) in diameter.
Controls:
Shift: Manual (standard), Air Po wer (optional), Vacuum Power (optional)
Warning Lights:
In cab: Two GREEN; “OK TO OPERATE”, “PUMP ENGAGED”
Operator Panel: GREEN; “WARNING: DO NOT OPEN THROTTLE UNLESS LIGHT IS ON”
6
INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
AUXILIARY DRIVE SHAFT
(1-½ INCH x 10 SPLINE)
OPTIONAL
SPEED
COUNTER
FRONT
DRIVE
FLANGE
SHIFTING
SHAFT
TO FRONT OF APPARATUS
GEARBOX MOUNTING
HOLES
(5/8-11 UNC x 1 INCH DEEP)
AUXILIARY DRIVE SHAFT
(1-
GEARBOX MOUNTING
HOLES
(5/8-11 UNC x 1 INCH DEEP)
3
/8 INCH x 10 SPLINE)
SERIAL
NUMBER
LOCATION
AIR VENT
OPTIONAL
GEARBOX
COOLER
GEARSHIFT SHAFT CAP AND
SHIFT INTERLOCK SWITCHES
GEARBOX MOUNTING
HOLES
(5/8-11 UNC x 1 INCH DEEP)
REAR
DRIVE
FLANGE
GEARBOX MOUNTING
(5/8-11 UNC x 1 INCH DEEP)
LOOKING TOWARDS FRONT OF APPARATUS
GEARBOX MOUNTED IN VERTICAL POSITION
SERIAL
NUMBER
PLATE
OIL FILL
AND LEVEL
PLUG
OIL DRAIN
PLUG
HOLES
SERIAL
NUMBER
LOCATION
GEARBOX
MOUNTING HOLES
(5/8-11 UNC x 1 INCH
DEEP)
SERIAL
NUMBER
PLATE
AIR VENT
GEARBOX COOLER
FRONT
DRIVE
FLANGE
(5/8-11 UNC x 1 INCH DEEP)
OIL FILL
AND LEVEL
PLUG
OIL DRAIN
PLUG
SHIFTING
SHAFT
LOOKING TOWARDS REAR OF APPARATUS
GEARBOX MOUNTED IN HORIZONTAL POSITION
Figure 3. MGA Gearbox Component Identification
OPTIONAL
GEARBOX MOUNTING
HOLES
7INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
DRIVE LINE INSTALLATION PLANNING
Before installing either the MGA or RGA
gearbox careful planning is necessary.
When planning the layout for the installation
of the gearbox careful attention must be
given to all factors that will affect total
system performance. To reduce the
possibility of drive line failure, proper layout
is necessary. When laying out the drive line
the following must be considered:
CAUTION: Before lay out and installation
of the drive line, consult apparatus and/
or drive line component manufacturer
for specific guidance in drive line design.
1. The drive shaft assembly between the
truck transmission and the split shaft PTO
gearbox must be independently phased
with u-joint angles cancelled. Likewise the
drive shaft assembly between the split shaft
PTO gearbox and the rear axle must also be
independently phased with u-joint angles
cancelled.
RPM ANGLE
2500 7
3000 5o50’
3500 5o00’
4000 4
4500 3o40’
5000 3
CAUTION: Drive shafts less than 15
inches (381 mm) long should have no
more than 1
3. The maximum length of a drive shaft
section should not exceed a length which
allows the drive line to run at or above:
o
30’ angularity.
o
o
o
00’
15’
15’
SHAFT CRITICAL×0852.
4. The maximum drive shaft speed shall not
exceed 5000 RPM.
2. Drive shaft angularity should be less than
that listed as maximum in drive line
component specifications. For specific
guidance consult with driveline component
manufacturer. The following chart provides
general guidance on maximum drive shaft
angularity based on drive shaft input speed
for normal length drive shafts:
5. Consideration must be given to all load
conditions.
6. The drive shafts must be concentric and
dynamically balanced to the standard
listed by the apparatus drive line and
transmission manufacturer.
7. Drive shaft joint and tube size must
match the chassis manufacturers original
design.
8
INSTALLATION MANUAL
INSTALLATION
SPLIT-SHAFT PTO GEARBOX
WARNING: The gearbox is heavy. When
lifting gearbox into position use proper
lifting devices to support the gearbox.
NOTE: Lock all bolts in place using
Loctite #242 (or equal) thread sealing
compound.
1. Fabricate brackets and attach to
apparatus frame at the location where the
gearbox is being mounted. When
fabricating brackets and attaching to the
frame, pay close attention to gearbox
mounting hole location, refer to figure 4 for
MGA mounting hole locations and refer to
figure 5 for RGA mounting hole locations.
2. Position gearbox at proper location on
apparatus frame. Support the gearbox and
clamp into place.
3. Apply a light coating of Loctite #242 (or
equal) thread sealing compound to the
11 UNC grade 5 mounting bolts. Insert the
5
/8-11 UNC grade 5 mounting bolts through
frame brackets into tapped mounting holes
on the side of the gearbox. See figure 4
and 5 for mounting hole locations. Make
sure the mounting bolts are long enough to
allow15/16 inch (23 mm) thread
engagement in the gearbox housing.
5
/8-
5. Attach Spicer flange yokes to the
companion flanges on the gearbox. Make
sure the flange yokes are capable of
withstanding the torque generated by the
apparatus drive line during road operations
(16,000 lb-ft (21,693 N-m) maximum).
6. Connect the sections of the apparatus
drive shaft to the flange yokes. Use only
grade 8 or better bolts when connecting
the drive line flanges together. 1600 and
1700 series flanges require3/8 inch (10 mm)
diameter bolts and 1800 series flanges
require7/16 inch (11 mm) diameter bolts.
7. Check and correct the following in
accordance with the apparatus and drive
line component manufacturer instructions:
a. Drive line phasing
b. Pinion angle
c. Transmission angle
d. Gearbox drive flange angles
e. Drive shaft section angles
f. Drive line offset
CAUTION: The gearboxes are shipped
without oil. Before placing the
apparatus in service fill the gearbox to
the proper level with SAE EP90 or SAE
80W-90 gear oil.
4. The RGA Gearbox requires a support
bracket attached to the top of the gearbox
housing. Manufacture and install a support
bracket from the apparatus frame to the
top housing of the RGA gearbox. Apply a
light coating of Loctite #242 (or equal)
thread sealing compound to the5/8-11 UNC
grade 5 mounting bolts. Secure bracket in
place using5/8-11 UNC grade 5 bolts. Make
suretheboltsarelongenoughtoallow15/16
inch (23 mm) thread engagement in the
screw holes on the gearbox housing.
8. Remove the ¾ inch NPT oil fill and level
plug and fill the gearbox with SAE EP 90 (or
SAE 80W-90) oil. Once the oil level is correct
(oil at the bottom of the oil fill and level
hole) replace and tighten the oil fill and
level plug.
9INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
5
/8-11 UNC x 1 IN.
DEEP (TYP.)
1-½ IN x 10
SPLINE
1-3/8 IN x 10
SPLINE
A
B
19 IN.
(483 mm)
C
5-1/8 IN.
(133 mm)
14-7/16 IN.
(367 mm)
3-¼ IN.
(83 mm)
E
11-1/8 IN.
(283 mm)
5-¾ IN.
(146 mm)
F
11-9/16 IN.
(294 mm)
D
13 IN.
(330 mm)
CENTERLINE
OF DRIVE
FLANGES
DIMENSION
MODELABCDEF
MGA-30 2-¾ IN 9-½ IN 6-¾ IN 6-3/8 IN 1-1/8 IN 4-5/8 IN
(70 mm) (241 mm) (171 mm) (162 mm) (29 mm) (117 mm)
MGA-27 3-1/16 IN 9-½ IN 6-¾ IN 6-3/8 IN 1-1/8 IN 4-5/8 IN
(78 mm) (241 mm) (171 mm) (162 mm) (29 mm) (117 mm)
MGA-21 2-¾ IN 9-½ IN 6-¾ IN 6-3/8 IN 1-1/8 IN 4-5/8 IN
(70 mm) (241 mm) (171 mm) (162 mm) (29 mm) (117 mm)
MGA-19 3-1/16 IN 9-½ IN 6-¾ IN 6-3/8 IN 1-1/8 IN 4-5/8 IN
(78 mm) (241 mm) (171 mm) (162 mm) (29 mm) (117 mm)
MGA-17 3 IN 9-½ IN 6-¾ IN 6-3/8 IN 1-1/8 IN 4-5/8 IN
(76 mm) (241 mm) (171 mm) (162 mm) (29 mm) (117 mm)
MGA-12 3 IN 9-¼ IN 7 IN 6-5/8 IN
(76 mm) (235 mm) (178 mm) (168 mm) (22 mm) (124 mm)
MGA-10 3 IN 9-¼ IN 7 IN 6-5/8 IN
(76 mm) (235 mm) (178 mm) (168 mm) (22 mm) (124 mm)
7
/8 IN 4-7/8 IN
7
/8 IN 4-7/8 IN
Figure 4. Gearbox Mounting Dimensions (MGA Gearbox)
E
F
10
INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
Gearbox Oil Capacity:
RGA (All Models) ....... 8 pints (3.8 liters)
MGA:
Vertical:
MGA-30, MGA-26, MGA-21, MGA-19,
MGA17 ................... 5-½ pints (2.6 liters)
MGA-12, MGA-10 . 7 pints (3.3 liters)
Horizontal:
All Models .............. 6 pints (2.8 liters)
NOTE: The direction of water flow
through the gearbox cooler does not
5
/8-11 UNC x 1 IN.
DEEP (TYP.)
8-3/8 IN.
(213 mm)
2 IN x 10
SPLINE
matter. Either end of the gearbox cooler
can be selected as the water inlet.
NOTE: Cooling water must be
connected to the gearbox when the
power required for the auxiliary
component is 200 hp (149 kw) or greater.
9. Remove the protective shipping caps
and/or plugs from gearbox cooler tube
connections. Connect
3
/8 inch (10 mm)
diameter hose, with minimum working
4 IN.
(102 mm)
4 IN.
(102 mm)
2-½ IN.
(64 mm)
14-7/16 IN.
(367 mm)
(152 mm)
8 IN.
(203 mm)
6 IN.
25-5/16 IN.
(643 mm)
A
5 IN.
(127 mm)
MODEL DIMENSION A
RGA-23 13-3/8 IN
(340 mm)
RGA-21 13-9/16 IN
(344 mm)
RGA-19 13-¾ IN
(349 mm)
RGA-17 13-15/16 IN
(354 mm)
RGA-15 14-1/8 IN
(359 mm)
4-5/16 IN.
(110 mm)
16 IN.
(406 mm)
2 IN.
(51 mm)
9-½ IN.
(241 mm)
Figure 5. Gearbox Mounting Dimensions (RGA Gearbox)
11INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
pressure of 500 PSI (34 BAR), from the water
pump discharge to the gearbox cooler inlet
fitting.
10. Connect
tube, with minimum working pressure of 500
PSI (34 BAR), from the gearbox cooler outlet
fitting to the water pump suction.
CAUTION: Gearbox oil cooler and
associated tubing must drain during
cold weather to prevent damage to the
cooler and tubing from freezing.
11. Unless the gearbox cooler is attached to
the apparatus engine cooling system, install
water drains in the gearbox cooler lines.
12. Remove the 1-¼ inch long cap screw
and washer from the end of the auxiliary
output shaft(s).
3
/8 inch (10 mm) diameter
CAUTION: Make sure interlocks and
indicator lights required by NFPA
standards are properly installed.
WARNING: Any electrical system has the
potential to cause sparks. Take care to
eliminate explosive or hazardous
environments during installation or
service.
16. Mount the indicator lights in the driver
compartment and on the pump operator
panel. A typical shift switch and indicator
light wiring diagram is provided as figure 6.
NOTE: The gearboxes are equipped with
two shift switches.
One of the shift switches must be used to
control
in the driver’s compartment.
ONLY the “ENGAGED” indicator light
13. Place the auxiliary equipment drive
adapter on the auxiliary output shaft(s).
Secure in place using the washer and 1-¼
inch long cap screw.
14. Torque the cap screw to 50 lb-ft (68 N-m)
and lock in place by applying Loctite #242,
or equal, thread locking compound to the
threads.
15. Connect the auxiliary equipment to the
drive adapter in accordance with drive
component manufacturer instructions.
CAUTION: DO NOT exceed the rated
current of the shift switch, 4 AMPS at 12
VDC, when connecting other devices.
The other switch can be used to energize
relay coils providing circuit completion for
other apparatus interlocks such as
transmission lockup, parking brake
engaged, OK to OPERATE indicator light,
etc. DO NOT use this switch to achieve
these interlocks directly as the current rating
of the switch may be exceeded.
12
INSTALLATION MANUAL
SPLIT-SHAFT PTO GEARBOX
IMPORTANT: ALL INSTALLER SUPPLIED
WIRE SHALL BE MINIMUM 14 AWG TYPE
SXL OR GXL (SAE J1128)
“DO NOT OPEN THROTTLE” INDICATOR LIGHT
(MOUNTED ON PUMP OPERATOR’S PANEL)
MATING CONNECTOR
(PROVIDED BY INSTALLER)
PACKARD WEATHERPACK
TERMINAL NO: ..................... 12010085
CONNECTOR NO:................. 12010973
SEAL NO: .............................. 12015359
“PUMP ENGAGED” INDICATOR LIGHT
(MOUNTED IN DRIVING COMPARTMENT)
“PUMP ENGAGED” INDICATOR
LIGHT ON OPTIONAL POWER
SHIFT PANEL
(MOUNTED IN DRIVING
COMPARTMENT)
POWER CONNECTION FOR “PUMP ENGAGED”
INDICATOR LIGHT (+12 VDC)
SWITCH CONNECTOR
(ATTACHED TO SWITCH ASSEMBLY)
INSTALLER MAY REMOVE THIS CONNECTOR AND
REPLACE WITH AN APPROPRIATE SEALED
CONNECTOR
SHIFT INDICATOR SWITCH TO BE USED FOR
“PUMP ENGAGED” INDICATOR LIGHT
TYPICAL RGA OR MGA
(FOR REFERENCE ONLY)
ONLY
GEARBOX
THROTTLE CONTROL
(ON PUMP OPERATOR’S PANEL)
TO CHASSIS
GROUND
INTERLOCK CONNECTION
TYPICAL INSTALLER SUPPLIED INDICATOR LIGHT AND INTERLOCK RELAYS.
(A SINGLE POTTER-BRUMFIELD VF4-1511 or MULTIPLE POTTER-BRUMFIELD
VF4-1511-SO1 SUPPRESSED COIL RELA YS ARE RECOMMENDED)
NOTE: TERMINAL 87A IS A NORMALLY CLOSED TERMINAL AND HAS
POWER AVAILABLE WHEN THE RELAY COIL IS DEENERGIZED.
THIS TERMINAL MAY BE USED FOR A SUPPLEMENTAL “ROAD
POSITION” INDICATOR LIGHT IN THE DRIVER COMPARTMENT.
IF TERMINAL IS NOT USED IT MUST BE PROPERLY INSULATED
87A 87A87 8786 30 8685 30 85
86
87
87A
TYPICAL CONTROL
RELAY WIRING DIAGRAM
85
30
TO CHASSIS
GROUND
“OK TO PUMP” INDICA TOR LIGHT
(MOUNTED IN DRIVING COMPARTMENT)
TO CHASSIS
SECOND SHIFT INDICATOR SWITCH. USED TO CONTROL RELAYS
FOR COMPLETION OF ADDITIONAL REQUIRED SHIFT INDICATOR
LIGHT CIRCUITS
(MAXIMUM LOAD LIMIT IS 4 AMPS AT 12 VDC)
POWER CONNECTION FOR RELAY COIL ACTUATION (+12 VDC)
POWER WILL NOT BE AVAILABLE UNTIL TRANSMISSION IS IN
NEUTRAL AND PARKING BRAKE IS SET. REFER TO NFPA 1900
SERIES FOR SPECIFIC GUIDANCE
POWER CONNECTION FOR RELAY CONTROLLED
INDICATOR LIGHTS AND INTERLOCKS (+12 VDC)
GROUND
Figure 6. Typical Gearbox Shift Indicator Switch Wiring Diagram
13INSTALLATION MANUAL
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