Case IH BHX1102 User manual

CASE
CASE
BHX1102 Backhoe for
D and DX Series Tractors
D25, DX25, D29, DX29, D33, DX33, D35, DX35,
D40, DX40, D45, DX45, DX48, and DX55
Operator’s Manual
87042342

F-3546-3-04 3
——————————— CONTENTS ———————————
INTRODUCTION....................................................................................................................................4
SAFETY PRECAUTIONS ......................................................................................................................5
OPERATION.....................................................................................................................................6-12
Pre-Operation Check List................................................................................................................6
Operating Directions........................................................................................................................6
Engine Speed..................................................................................................................................6
Controls...........................................................................................................................................6
Boom / Swing ..................................................................................................................................6
Dipperstick / Bucket.........................................................................................................................7
Left Hand Stabilizer.........................................................................................................................7
Right Hand Stabilizer.......................................................................................................................7
Operating the Backhoe....................................................................................................................7
Transporting the Backhoe ...............................................................................................................8
Placing the Stabilizers.....................................................................................................................8
Filling the Bucket.............................................................................................................................9
Dumping the Bucket........................................................................................................................9
Trenching Between a Building and Open Excavations ..............................................................9-10
Side Slope Excavating or Trenching .............................................................................................10
Miscellaneous................................................................................................................................10
Finishing Straight Walls.................................................................................................................11
Backfilling ......................................................................................................................................11
Seat Adjustment............................................................................................................................11
Swing Lock....................................................................................................................................12
Boom Lock ....................................................................................................................................12
Transporting Backhoe ...................................................................................................................12
Removal From Tractor and Storage..............................................................................................12
SERVICE.........................................................................................................................................13-14
Beginning of Season .....................................................................................................................13
Hydraulic Hoses ............................................................................................................................13
Hydraulic System Reservoir..........................................................................................................13
Bucket Tooth Points ......................................................................................................................14
Tightening Nuts and Bolts .............................................................................................................14
Lubrication.....................................................................................................................................14
HYDRAULIC TROUBLE SHOOTING.............................................................................................15-16
CYLINDER SERVICE ..........................................................................................................................17
VALVE SERVICE............................................................................................................................18-20
Backhoe Control Valve Illustration & Parts List.............................................................................18
Replacing Sections........................................................................................................................19
Replacing Section Seals ...............................................................................................................19
Spool Seal Removal......................................................................................................................19
Spool Seal Installation...................................................................................................................20
Replacing Damaged Backup Rings...............................................................................................20
Installing Spring Centering Spool Positioner and Float Positioner Kit...........................................20
Replacing Spool Ends...................................................................................................................20
Relief Valve Cartridge Table .........................................................................................................20
PARTS ILLUSTRATIONS ..............................................................................................................21-26
Mainframe .....................................................................................................................................21
Swing Frame .................................................................................................................................22
Boom.............................................................................................................................................23
Dipperstick.....................................................................................................................................24
Seat...............................................................................................................................................25
Hydraulics......................................................................................................................................26
SPECIFICATIONS ..........................................................................................................................27-29
SAFETY DECALS................................................................................................................................30
Page

4 F-3546-3-04
—————————— INTRODUCTION ——————————
This manual provides operation, maintenance, assembly and
parts identification for your new backhoe.
Your CASE IH BHX1102 backhoe is designed for use on
CASE IH D25, DX25, D29, DX29,D33, DX33, D35, DX35,
D40, DX40, D45, DX45, DX48, and DX55 tractors.
Successful operation and long life of your backhoe depends,
of course, on proper operation and the care given it. Please
read this manual carefully and follow all instructions. Correct
operation and maintenance will save much time and expense.
This SAFETY ALERT SYMBOL identifies
IMPORTANT SAFETY MESSAGES in this
manual. OBSERVE and FOLLOW all
SAFETY MESSAGES to prevent personal
INJURY.
Reference to left and right used in this manual refer to the
position when seated in the operating position on the
backhoe, unless otherwise specified.
If at any time you have a service problem with your backhoe,
or need parts, contact your local CASE IH equipment dealer.
Your dealer will need your backhoe model, serial number and
component number* to give you prompt efficient service.
Record your serial and component numbers below. Also
record date of purchase.
* Your backhoe serial and component numbers are stamped
on this plate located on right side of main frame.
Model Number
Product Identification Number
CNH America LLC
RACINE, WI 53404 U.S.A.
Made in U.S.A.
®
Serial Plate Location
DATE PURCHASED
BHX1102

SAFETY PRECAUTIONS
Following are precautions suggested to help prevent accidents.
Whenever you see this symbol it means: ATTENTION!
BECOME ALERT!
YOUR SAFETY IS INVOLVED!
5
F-3546-3-04
A careful operator operates best. Most accidents can be avoided
by observing certain precautions. Read all precautions that
follow before operating your tractor and loader to help prevent
accidents. Equipment should be operated only by those who are
responsible and instructed to do so.
GENERAL
1. Read your Operator's Manuals carefully before using
tractor, backhoe or loader. Lack of operating knowledge
can lead to accidents.
2. Replace damaged or illegible safety decals. See page 30
for required decals.
3. Operate tractor, loader and backhoe only from operator's
seat.
TRACTOR
1. Use of seat belt is recommended. Overturning a tractor
without use of a seat belt can result in death or injury.
2. Add recommended wheel ballast and/or rear weight as
recommended in owner's manual to providegood stability.
3. Move rear wheels to widest settings recommended by
CASE IH to increase stability.
4. Do not start the engine or operate controls while standing
beside the tractor. Always sit in the tractor seat when
starting the engine or operating controls.
5. Do not park the tractor on a steep incline.
6. Move and turn tractor at low speeds.
BACKHOE
1. Never allow anyone to get under the backhoe bucket when
the bucket is raised.
2. To prevent upsets, avoid full reach and swinging the
backhoe bucket to the downhill side when operating on a
slope.
3. Watch out for overhead and underground high-voltage
electrical lines when operating the backhoe.
4. Do not enter the platform from the rear.
5. Always attach the backhoe transport locks before
transporting the unit.
6. Always place the tractor transmission in neutral before
operating backhoe.
BACKHOE / LOADER OPERATION
1. Always be sure of water, gas, sewage and electrical line
locations before you start to dig. Call 888-258-0808 for
location of utilities.
2. Watch out for overhead and underground high-voltage
electrical lines when operating the loader or backhoe.
3. Operate the loader or backhoe controls only when properly
seated at the controls.
4. Never attempt to lift loads in excess of loader or backhoe
capacity.
5. Always lower the loader and backhoe buckets to the
ground, shut off the engine and apply the parking brake
before getting off the unit.
6. Always be watchful of bystanders when operating the
loader, when lowering the stabilizers, or when operating the
backhoe.
7. Use care when operating on steep grades to maintain
properstability. Alwayscarrythe bucketas lowas possible.
8. Never attach chains, ropes, cables, etc. to the loader or
backhoe for pulling purposes.
LOADER
1. Do not transport anyone in the loader bucket.
2. Always carry the loader bucket low for maximum stability
and visibility, whether the bucket is loaded or empty.
3. Always use the recommended amount of counterweighting
to ensure good stability.
4. Be careful when handling round objects such as round
bales, poles, etc. Lifting too high or rolling bucket too far
back could result in these objects rolling rearward down the
loader arms on the operator.
5. Never allow anyone to get under the loader bucket or reach
through the lift arms when the bucket is raised.
6. Exercise caution when operating the loader with a raised
bucket or fork.
MAINTENANCE
1. When servicing or replacing pins in cylinder ends, buckets,
etc., always use a drift and hammer of non-sparking
material. Failure to do so could result in injury from flying
metal fragments.
2. Do not modify or alter or permit anyone else to modify or
alter backhoe or any of its components or any backhoe
function without first consulting a CASE IH Dealer. If you
have any questions regarding backhoe modifications
contact CASE IH.
3. Always wear safety goggles when servicing or repairing
backhoe, tractor or loader.
4. Escaping hydraulic/diesel fluid under pressure can
penetrate skin causing serious personal injury.
•
DO NOT use your hand to check for leaks. Use a piece of
cardboard or paper to search for leaks.
•
Stop engine and relieve pressure before connecting or
disconnecting hydraulic or diesel lines.
•
Tighten all connections before starting engine or pres-
surizing lines.
If any fluid is injected into skin, obtain medical attention
immediately or gangrene may result.
5. Do not tamper with relief valve setting. Valve relief is
factory-set. Changing relief setting can cause overloading
and serious operator injury may result.

6 F-3546-3-04
——————————— OPERATION ———————————
CAUTION: To avoid possible injury, observe the
following safety rules BEFORE OPERATING
backhoe.
•
Be sure area is clear of underground utilities or other
hazards.
•
Position a barricade around work area.
•
Provide adequate front end weight to counter balance
backhoe at all times.
•
Keep bystanders a safe distance away.
PRE-OPERATION CHECK LIST
This backhoe is designed for safety, durability and operator
convenience. To insure satisfactory performance complete
the following check list and make all necessary adjustments
before initial operation.
1.All safety shields must be in place.
2.Safety and operation decals must be in place, undamaged
and clean.
3.Hydraulic hookup must be correct and all connections tight.
4.All bolts and pins which attach backhoe to tractor must be in
place. Check tightness of bolts and check that all pins are
retained.
5.Tractor must be in proper operating condition.
6.Lubricate backhoe, see SERVICE.
7.Controls must operate properly according to lever operation
diagrams on backhoe decals. Refer lever operation
diagrams, which are also shown in OPERATING
BACKHOE on the following page.
8.Cycle all cylinders slowly to purge air from hydraulic system.
9.Hydraulic system oil level must be correct.
OPERATING DIRECTIONS
The terms right, left, front and back shall be from the position of
the operator when seated in the operating position on the
backhoe.
ENGINE SPEED
Speed at which backhoe operates is partially dependent on
engine RPM. Use a moderate engine speed to start and
increase it as your experience permits.
CONTROLS
The backhoe has two major control levers, Boom/Swing and
Dipperstick/Bucket. These controls are located on the control
panel directly ahead of the operator.
The stabilizer control levers are located between the two
major control levers.
Direction of movement of operation corresponds to movement
of operating lever.
BOOM/SWING
Push lever forward, boom moves down, away from operator.
Pull lever back, boom moves up, toward operator.
Pushing lever farther forward into detent position puts boom
into float.
Move lever to left, backhoe swings to left. Move lever to right,
backhoe moves right.
By moving lever to one of the intermediate positions, boom
can be swung left or right at the same time as it is being raised
or lowered, performing two operations simultaneously.
Swing left and lower boom by moving control lever forward
and to the left.
Swing left and raise boom by moving control lever back and to
the left.
Swing right and lower boom by moving control lever forward
and to the right.
Swing right and raise boom by moving control lever back and
to the right.
DIPPERSTICK /
BUCKET
BOOM /
SWING
LEFT
STABILIZER
RIGHT
STABILIZER
In
Out
Backhoe
Valve
Quick
Coupler
Quick
Coupler
Tractor
Sump Port
Tractor
Hydraulic
Manifold
Loader
Valve
Power Beyond
Port
Power
Beyond
Port
General Hydraulic Circuit -
Disables 3-pt Hitch

F-3546-3-04 7
——————————— OPERATION ———————————
DIPPERSTICK/BUCKET
Push lever forward, dipperstick moves away from operator.
Pull lever back, dipperstick moves toward operator.
Move lever to left, bucket curls in. Move lever right, bucket
extends out.
By moving lever to one of the intermediate positions,
dipperstick can be extended or retracted at the same time as
bucket is being loaded or dumped.
Extend and load bucket by moving lever forward and to the left.
Retract and load bucket by moving lever back and to the left.
Extend and dump bucket by moving lever forward and to the
right.
Retract and dump bucket by moving lever back and to the
right.
The two operations of the boom lever combined with the two
operations performed by bucket and dipperstick control levers
provide four simultaneous operations from the two levers. Oil
flow will go to the operation which requires the least pressure.
The ability to feather valve spools and balance pressure
comes with experience, and will result in reduced cycle times.
LEFT HAND STABILIZER
Push lever forward, left hand stabilizer lowers. Pull lever back,
left hand stabilizer raises.
RIGHT HAND STABILIZER
Push lever forward, right hand stabilizer lowers. Pull lever
back, right hand stabilizer raises.
OPERATING BACKHOE
CAUTION: To avoid possible injury, observe the following
safety rules WHEN OPERATING backhoe.
•
Operate from backhoe operators seat only.
•
Lower stabilizers until rear of tractor is totally supported
by them.
•
Do not dig near stabilizers.
•
Do not attempt to raise tractor off ground or move trac-
tor forward or backward using backhoe dipperstick or
bucket.
•
Do not lose stability by swinging bucket downhill when
positioned on a slope.
It is not difficult to become an efficient operator. Control
operating decals are located beside control levers. Study
these decals. They will assist you in becoming familiar with the
controls.
Smooth, light handling of the controls will result in the most
efficient backhoe operation.
Operate the backhoe control levers to become familiar with
their speed and movements. Engine speed will determine
speed of cylinder operation.
Swing the boom several times to practice controlling the speed
of swing. Do not operate swing more than 45 degrees each
way for the first few times. Gradually increase the arc.
Best results are obtained by digging near the center of the
swing arc so material can be dumped on either side.
As operator becomes more familiar with operation of backhoe,
it will be common practice to operate two controls at one time.
For example with the bucket extended and the dipperstick
extended, the lift control and dipperstick control can be
operated together to bring bucket toward operator with down
pressure on it. As dipperstick approaches operator, the
dipperstick and bucket controls can be operated together to
close bucket and trap material. At the end of the stroke, lift and
dipperstick controls are operated to move the load up and
away from the operator to save time in clearing the excavation.
This dual operation of controls will speed and simplify the
digging operation. Normally the two or more movements will
not be equal or even simultaneous but as pressure within the
cylinders, and the resistance of an operating member of the
hoe lessens, it will begin to move. It is balancing the force of
one member against the other.
NOTE: Actuating the bucket is the key to powerful digging.
Operating the dipperstick and bucket controls simultaneously
will insure a full bucket and prevent wasted motion and time.

8 F-3546-3-04
——————————— OPERATION ———————————
PLACING STABILIZERS
TRANSPORTING BACKHOE
CAUTION: To avoid possible injury, observe the
following safety rules WHEN TRANSPORTING
backhoe.
•
Travel slowly o ver rough terrain, on hillsides, and
around curves to prevent tipping.
•
Do not drive tractor near the edge of a ditch or excava-
tion.
•
Use accessory lights and slow moving vehicle emblem
when traveling on highways.
•
Be sure Slow Moving Vehicle emblem is always visible
from rear.
Before leaving backhoe operators seat position backhoe for
transport by raising boom, swinging to center, curling bucket
and dipperstick in and raising stabilizers.
Install swing and boom locks.
When transporting for long distances, periodically examine
backhoe. Make sure boom and swing remain securely locked
in transport position. Make sure bucket is at full curl position
and stabilizers fully raised. It is normal for backhoe to slowly
settle while being transported.
IMPORTANT: Position SMV sign on mounting bracket located
on bucket cylinder when transporting backhoe. During
backhoe operation, positon SMV sign on bracket located on
tractor.
Set the stabilizers to remove weight from the rear wheels.
Rear wheels are to remain touching the ground as this
provides for the widest stabilizer stance and lowest center of
gravity.
Raising the wheels off the ground will not only reduce stability
and digging depth, but impair performance and impose
unnecessary stress on the backhoe.
SMV Sign
Mounting Bracket
Figure 1
Mounting SMV Sign
Boom Lock
Stabilizer Lock
Swing Lock
Storage Swing Lock Pin
Figure 2
Lock & Pin Locations

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