Rugby LR-3510 User manual

RUGBY MANUFACTURING CO.
INDUSTRIAL PARK
515 1st St. NE.
RUGBY, NORTH DAKOTA 58368
1656589
LR-3510
Install and Operation
Manual
LATEST EDITION: July 24, 2020
FIRST EDITION: January 4, 2001

WARNINGS:
Warning: Not installing or operating equipment correctly can cause component damage or an accident
which may cause injury or death. "Always" install and operate equipment in accordance with
manufacturer's instructions. Read and understand this manual fully before proceeding.
Warning: Welding, oxy-fuel cutting, or grinding sparks can cause fuel to ignite which in turn can lead
to injury or death. "Always" take adequate steps to avoid ignition of fuel from fuel tanks
when welding, grinding, or oxy-fuel cutting during equipment installation.
Warning: Heat from the truck's exhaust system can cause hydraulic component failure and may lead to
a fire which could cause injury or death. "Always" install equipment in locations where heat
from the exhaust system will not damage any hydraulic component.
Warning: Being under a raised body can result in serious injury or death should the body inadvertently
descend. "Never" position yourself or allow others to position themselves under a "loaded"
body. "Always" prop the "unloaded" body up using the body prop or body props supplied.
"Remember" body props are to be used only on an "unloaded" body.
Warning: Malfunctioning equipment can cause property damage, injury or death. "Always" have faulty
equipment repaired before continuing its use. If required, consult the manufacturer.
Warning: Overloading of a truck can cause truck component damage or an accident which may cause
injury or death. "Never" exceed the gross vehicle weight (GVW) or the gross axle weight
(GAW) rating of your vehicle.
Warning: The inadvertent shorting of the truck's electrical supply can cause a fire or equipment damage
that could lead to injury or death. "Always" disconnect the vehicle battery prior to installing,
servicing or repairing the pump.
Warning: Never install a cable on a truck while the body is raised without first blocking, bracing, or
propping the body up to prevent the body from inadvertently falling when the control valve
lever is moved. A falling body will result in serious injury or death if the control valve lever is
moved while someone is under the non-supported body.
Warning: Damage to brake lines during equipment installation, or installing bolts or equipment in such
a way that the line will rub and become damaged can lead to brake failure which can cause an
accident and can lead to severe injury or death. "Always" take adequate steps to prevent
brake line damage during installation and isolate brake lines from installed equipment.
Warning: To prevent damage to the truck's electrical system, disconnect the positive battery cable and
alternator when arc welding on the truck.
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Stock No. 1656589
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LR-3510
Stock No. 1656589
Page 3 of 9
SECTION A –APPLICATION
The capacity and dump angle obtained with the LR-3510 will vary depending on where the hoist is
mounted in relation to the rear hinge, see Table A. Below is a list of dump angles and corresponding
capacities for different mounting distances (M), (Refer to Fig. #1). REMEMBER, all capacities listed
below are based on water level, non-diminishing loads.

LR-3510
Stock No. 1656589
Page 4 of 9
SECTION B - INSTALLATION OF REAR HINGE:
1. Determine the location of the rear hinge. This location should be immediately behind the rear wheel
leaf spring shackle.
2. Referring to Fig. #2, cut a notch as shown.
3. Position two rear hinge angles on the rear hinge shaft. Place this assembly into the notch, cut in Step
#2 as shown in Fig. #3. Weld into place.

LR-3510
Stock No. 1656589
Page 5 of 9
4. Place a rear hinge on each end of the rear hinge shaft installed in Step #3. Secure one end with a 2 1/8"
O.D. x 1 3/8" I.D. washer and a 1/4" x 2" cotter pin. On the opposite end of the shaft, slide the weld-in-
block supplied against the rear hinge. Weld the block in place. Cut off the excess rear hinge shaft.
NOTE: If an obstruction can not be cleared by moving the hoist forward or rearward, the hoist may be
reverse mounted as shown in Fig. #1, or the portion of the hoist that extends below the frame
may
be lifted to the frame level without affecting the capacity or performance of the hoist. Be aware
that lifting this portion of the hoist will raise the hoist mounting height.
NOTE: The distance between the rear hinge shaft center and the saddle center is referred to as the "M"
dimension. In Fig. #1, the "M" dimension for several dump angles are tabulated.
NOTE: Moving the hoist rearward or forward along the truck frame will affect the hoist's performance.
A forward movement will reduce the dump angle and will increase capacity while a rearward
movement will increase the dump angle and reduce capacity.
SECTION C -- INSTALLATION OF HOIST FRAME:
1. Slide a lock collar onto each saddle shaft. Slide each saddle shaft into the lower tube as shown in
Fig. #4.
2. Locate the hoist on the truck frame, making sure to center the hoist right and left, and to square the
hoist with the truck frame. The LR-3510 is designed to rest on the truck frame as shown in Fig. #1.
A small portion of the hoist extends below the truck frame level. The hoist therefore, may have to
be moved forward or rearward to avoid obstructions below the frame level.
3. When the hoist is positioned, place a mounting angle under each side of the hoist saddle. Secure
each mounting angle to the truck frame by drilling two 17/32" dia. holes and installing two 1/2" x 1
1/2" hex cap screws, two 1/2" lock washers and two 1/2" hex nuts (Fig. #4).
4. Weld each end of the hoist saddle bracket to the corresponding mounting angle (Fig. #4).
NOTE: Do not weld the hoist or mounting angle to the truck frame.
NOTE: The hoist saddle must set directly on the truck frame. If rivet interference is encountered,
counter sink the rivet head into the hoist saddle.
SECTION D -- INSTALLATION OF PUMP BRACKET:
1. Position and clamp the pump bracket to the chassis frame in a convenient location. Make sure the
location of the pump is close enough to allow the hose to connect the pump to the hoist cylinder.

LR-3510
Stock No. 1656589
Page 6 of 9
2. Drill four 13/32" dia. holes through the chassis frame and the pump bracket. Fasten with four
3/8" x 1 1/4" hex cap screws, four 3/8" lock washers and four 3/8" hex nuts. (Fig. #5).
IMPORTANT: To maintain chassis frame strength, keep all four 13/32" dia. holes within the middle
third of the frame web (Fig. #5).
IMPORTANT: To install the pump, refer to the pump installation manual included with the pump
package.
SECTION E - BODY INSTALLATION:
1. Slide a lock collar onto each lifting
shaft. Slide a lifting shaft with
collar into each end of the hoist
lifting tube (Fig. #6).
2. Position the body with the long
beams (just long beams if they are
separate from the body) onto the
truck frame.
NOTE: A clearance of at least 2" is
required between the truck cab and
the closest point on the truck body.
The LR-3510 has a mounting
height of 5".

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Stock No. 1656589
Page 7 of 9
NOTE: On some models of trucks, the frame is not flat from front to rear. On these models,
provisions must be made to level the frame before installing the body.
3. Position the rear hinge brackets against the long beams. Once in position, weld the rear hinge
brackets to the body long beams.
4. Slide each of the lifting shafts all the way against the inside of the long beam. Weld all
around the lifting shaft plate to secure the shaft to the long beam. With the shaft secured,
slide the lock collars against the hoist lifting tube and lock them there by tightening the set
screw (refer to Fig. #6).
5. With the hoist and body completely installed, cycle the hoist several times to rid the hydraulic
circuit of air.
6. Raise the hoist and body. Position body prop and prop base as shown in Body Prop
Installation Manual. Weld prop base to body long beam.
NOTE: Before operating the hoist, read the operation section of this manual (SECTION G).
WARNING: If it is necessary to work on the hoist or body while in the raised position, ALWAYS block
the unloaded body up securely with the body prop or body props.
SECTION F -- LUBRICATION:
1. Install and grease the eight grease fittings in the hoist frame itself. Refer to Fig. #7 for grease
fitting location.
2. Install and grease the two grease fittings in the truck rear hinge.
3. All grease fittings should be greased periodically or at least every time the truck itself is greased.
4. Check oil level in the pump reservoir every time the oil is changed in the truck engine.
REMEMBER keep the oil clean. An annual oil change can prevent contaminants from ruining
your pump and hoist cylinder.

LR-3510
Stock No. 1656589
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ITEM
PART #
DESCRIPTION
QTY
1
1653827
SCREW, ½-13 X 1-1/2 HHC GR5 PLT
4
2
1653845
SET SCREW, 3/8-16 X 5/8 SQR HD BLK
4
3
1653860
NUT, ½-13 HEX GR5 STL PLT
4
4
1653880
WASHER, ½ LOCK PLATED
4
5
1520370
FITTING, ¼-28” THREAD FORMING GREASE
B
6
1654011
PIN, ¼” X 1-3/4” ROLL
3
7
1655043
ANGLE, MOUNTING
2
8
1655082
SHAFT, CYLINDER PIN
1
9
1655176
LOCK RING
4
10
1655198
BRACKET, LR-3510 LIFT
2
11
1655199
SET, LR-3510 SADDLE BRACKET
1
12
1655479
SHAFT, CYL. PNG
1
13
1655885
FRAME ONLY LR-3510
1
14
1621263
CYLINDER, 3.5 X 10, O-RINGS
1
FIGURE 7

LR-3510
Stock No. 1656589
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SECTION G -- OPERATION:
Single Acting Hoist Operation:
To insure long service and safety from your hoist, it is important that the following procedures be
followed every time the hoist is operated.
1. To raise the hoist, push in the "up" button on the control station. This will start the pump and
raise the box.
2. When the hoist reaches full extension, the pump will bypass. Care should be taken not to let
the pump bypass for long periods of time, for this will put stress on the whole hydraulic and
electrical system. To stop the pump from bypassing release the "up" button on the control
station.
3. To lower the hoist, simply push the "down" button in on the control station. This will activate
the pump and start the hoist down. To stop the hoist from lowering, simply release the
"down" button. The hoist will stop lowering and hold its position.
Double Acting Hoist Operation:
CAUTION: To insure long service and safety from your hoist, it is important that the following procedure
be followed every time the hoist is operated.
1. To raise the hoist, push in the control station button marked "up". This will activate the pump.
2. When the hoist has reached its full extension, the pump will bypass. Care should be taken not
to allow the pump to bypass for long periods of time for this will put stress on the entire
hydraulic system. To stop the pump from bypassing, release the "up" button on the control
station.
3. To lower the hoist, push the control station button marked "down". This will activate the
pump and start the hoist down. Hold the button down until the pump bypasses and then
release this button. This will lock the truck body against the truck frame.
WARNING: Anytime the hoist or truck body is worked on with the truck body in a raised position, be sure
the unloaded body is properly blocked with the body prop or body props.
©2001 Rugby Manufacturing Co.