[27]
Model
BHM-195
BHL-225
Structure weight (kg)
540
700
Max digging depth (m) A
1.95
2.25
Max digging radius (m) B
2.9
3.3
Max digging height (m) C
3.17
3.45
Max unloading height (m) D
2
2.3
Stabilizer width (m)
1.7
1.7
Swing angle for boom
180
180
Bucket turning angle
195
203
Bucket turning angle
0.02
0.035
Bucket width (mm)
15L/MIN
25L/MIN
Min. hydraulic flow req.
25L/MIN
40L/MIN
Max. hydraulic flow allowed
13MPA
13MPA
Min. hydraulic press. Allowed.
16MPA
16MPA
Bucket digging force (kg)
1100
1700
Dipper arm digging force (kg)
850
1100
Item
Service
Service Interval
Hydraulic System Oil Level
Check
Daily / 10 Hours
Hydraulic System Oil/Filter
Replace
Every 50 Hours
Tyre Inflation
Check
Weekly / 50 Hours
Backhoe Pivot Points
Lubricate / Grease
Daily / 10 Hours
Backhoe Hydraulic Lines, Hoses,
Connections
Check for leaks, wear
Daily / 10 Hours
Boom, Arm, Swing and Bucket
cylinder rod packing’s
Check for seepage, service as
needed
Daily / 10 Hours
Pivot Pin Bolts and Dust Covers
Check, replace if missing
Daily / 10 Hours
Pin Wear
Check, replace if necessary
Daily / 10 Hours
Backhoe Mount Hardware
Check visually
Daily / 10 Hours
Structural Bolts and Nuts
Re-torque
Every 25 Hours
PROBLEM
Possible Cause
Correction
Low hydraulic fluid level
Check and replenish hydraulic
fluid.
Hydraulic hoses connected
improperly
Check and correct hydraulic hose
connections.
Stabilizer Legs, Swing, Boom, Dipper
Arm and Bucket Cylinders not
working
Hydraulic hoses to / from control
valve blocked
Check for damage (kinked) hoses,
etc.
Backhoe control valve or tractor
main relief valve stuck open
Check system pressure, repair or
replace relief valve. Refer to the
tractor Operator’s Manual.
Lower system pressure supplied
from hydraulic pump
Check system pressure. Repair or
replace pump.
Control valve linkage broken
Inspect. Repair as required.
Quick disconnected coupler(s) are
not fully connected or “flow Check”
Check coupler connections.
Replace coupler(s) if necessary.
PROBLEM
Possible Cause
Correction
Stabilizer Legs, Swing, Boom, Dipper
Arm and Bucket Cylinders not
working
Hydraulic Hose or tube line blockage
Check for evidence of damage to
hoses or tube lines that would block
flow of oil between cylinders and
control valve
Cylinder piston assembly defective
(not sealing)
Check cylinder for internal leakage as
described in service section under
cylinder leakage tests.
Control Valve blockage
Inspect for blockage. Disassemble
valve if necessary.
Safety lock pins (2) not removed
Remove and store safety pins.
Stabilizer legs safety clip not released Release the clip
Cylinders operate in wrong direction
relative to control valve lever
position.
Hydraulic Hoses connected
incorrectly.
Correct hydraulic hoses connections.
Low hydraulic fluid level
Check and replenish hydraulic fluid.
Cold hydraulic fluid
Allow hydraulic system to warm up
to operating temperature
Summary of Contents for BHL-225
Page 1: ......
Page 7: ...6...
Page 8: ...7...
Page 16: ...15...
Page 24: ...23...
Page 30: ...FRONT ARM 29...
Page 31: ...MAIN BOOM 30...
Page 32: ...SWING JOINT 31...
Page 33: ...SIDE SHIEFT FRAME 32...
Page 34: ...BASE 33...
Page 35: ...OPERATION PANNEL AND OIL TANK 34...
Page 36: ...SUPPORTING LEG 35...
Page 37: ...SEAT 36...
Page 38: ...BUCKET 37...
Page 39: ...FRONT ARM ASSEMBLY 38...
Page 40: ...MAIN BOOM 39...
Page 41: ...40...
Page 42: ...BOTTOM SEAT ASSEMBLY 41...
Page 43: ...SWING POST ASSEMBLY 42...
Page 44: ...SEAT 43...
Page 46: ...45...