PDF Service Manual New Holland E35B SR E39B SR Mini Excavator - 8 MB
This service manual provides complete repair and maintenance information for the New Holland E35B SR and E39B SR hydraulic mini excavators.
It is designed for technicians and contains detailed instructions for troubleshooting, disassembly, and reassembly of all major components.
The manual includes hydraulic and electrical schematics to aid in complex diagnostics.
This guide is essential for keeping your mini excavator in peak operating condition.
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--- Page 1 ---
TO THE READER
This manual has been printed for a skilful engineer For any question or remark, or in case of any error
to supply the necessary technical information to in the contents of this manual, please contact:
carry out service operations on this machine.
CNH ITALIA S.p.A.
Carefully read this manual to obtain correct infor- Via Plava, 80
mation regarding repair procedures. 10135 TORINO - Italy
REFERENCE
Beyond this Service Manual, also refer to the doc-
uments listed below:
- Operator’s Manual
- Parts Catalogue
COMPLETE SERVICE MANUAL The Service Manual for “Hydraulic Mini Excava-
The Service Manual consists of one volume: tors” contains the necessary technical information
to carry out maintenance and repair operations on
- E35B SR - E39B SR - Service Manual “Hydraulic the machine, the necessary tools to carry out
Mini Excavators” maintenance operations, the information on serv-
ice standards, the procedures for removal, instal-
lation, disassembly and reassembly.
The Service Manual relevant to the excavator
models E35B SR - E39B SR consists in the follow-
ing volume, which is identified through the rele-
vant print no. as reported below:
VOLUME MACHINE TYPE PRINT NUMBER
Service Manual for “Hydraulic Mini Excavators” E35B SR 84553640A
E39B SR
--- Page 3 ---
1. DESCRIPTION
1.1 GENERAL PRECAUTIONS FOR (2) Suspend warning tag “DO NOT OPERATE” from the
doorknob or the operating lever, and have a preliminary
REPAIRS
meeting before starting work.
1.1.1 PREPARATION BEFORE DISASSEMBLING (3) Stop the engine before starting inspection and
maintenance to prevent the operator being caught
in machine.
(4) Identify the location of a first-aid kit and a fire extin-
(1) Understanding operating procedure guisher, and also where to make contact in a state
Read OPERATION AND MAINTENANCE MANU- of emergency.
AL carefully to understand the operating procedure.
(5) Choose a hard, level and safe place, and place the
(2) Cleaning machines attachment on the ground securely.
Remove soil, mud, and dust from the machine be-
(6) Use a lifter such as a crane to remove heavy parts (20 kg
fore carrying it into the service shop to prevent loss
or more) from the machine.
of work efficiency, damage of parts, and difficulty in
rust prevention and dust protection while reassem- (7) Use proper tools, and replace or repair defective
bling. tools.
(3) Inspecting machines (8) Support the machine and attachment with supports
Identify the parts to be disassembled before start- or blocks if the work is performed in the lifted condi-
ing work, determine the disassembling procedure tion.
by yourself considering the workshop situations 1.1.3 DISASSEMBLING AND ASSEMBLING
etc., and request procurement of necessary parts in HYDRAULIC EQUIPMENT
advance.
(4) Recording
Record the following items for communication and
prevention of recurring malfunction. (1) Removing hydraulic equipment
1) Inspection date and place. 1) Before disconnecting pipes, release the hy-
2) Model name, applicable machine number, and draulic pressure of the system, or open the re-
hourmeter read. turn side cover and take out the filter.
3) Trouble condition, place and cause. 2) Carefully drain oil of the removed pipes into a
4) Visible oil leakage, water leakage and damage. containers without spilling on the floor.
5) Clogging of filters, oil level, oil quality, oil con- 3) Apply plugs or caps on the pipe ends to avoid
tamination and loosening of connections. oil spillage and dust intrusion.
6) Result of consideration if any problem exists based 4) Clean off the external surface of the equipment be-
on the operation rate per month calculated from fore disassembling, and drain hydraulic and gear oil
hourmeter indication after the last inspection date. before placing it on the workbench.
(5) Arrangement and cleaning in service shop (2) Disassembling hydraulic equipment
1) Tools required for repair work. 1) Do not disassemble, reassemble or modify the
hydraulic equipment without the permission of
2) Prepare space to place the disassembled parts.
the manufacturer, who is not responsible for the
3) Prepare oil containers for draining oil etc.
performance and function of the product after
1.1.2 SAFETY IN DISASSEMBLING AND modification.
ASSEMBLING 2) When disassembling and reassembling for unavoid-
able reason, refer the work to qualified personnel
who have the specific knowledge or completed the
parts service training.
(1) Wear appropriate clothes with long sleeves, safety 3) Provide matching marks to facilitate reassem-
shoes, safety helmet and protective glasses. bling work.
4) Before starting the work, read the manual of disas-
sembling procedure, if it is provided, and decide
whether the work can be performed by yourself.
1-1
--- Page 4 ---
2. SPECIFICATIONS
Unit: mm
(3) E39B SR (CANOPY)
160
660
R850
1700
660
50
60
4710
1910
1550 1460
850
2570
(13.6")
345
330
570
1600
300 1700
1400 2150
1700 2680
(4) E39B SR (CAB)
160
660
R850
1700
50
660
60
4710
1910
1550 1460
850
2570
(13.6")
330
345
570
1600
300 1700
1400 2150
1700 2680
2-3
--- Page 5 ---
2. SPECIFICATIONS
2.9 LUBRICANT, FUEL AND COOLANT SPECIFICATIONS
The following table indicates the proper oils, lubricants and fuel to be used with various climates and service condi-
tions.
Operating range
Specifica-
Components Technical name Quantity (ambient temperature °C)
tions
-20° -10° 0° 10° 20° 30° 40°
Selenia IDRAULICAR AP31
Selenia IDRAULICAR AP46 Tank: 38 l
Hydraulic oil tank QKF 583/HD
Selenia IDRAULICAR AP51 System: 54.5 l
Ambra HI-TECH 46
API CH4
H level: 6.7 l
Engine oil pan Ambra Supergold ACEA E5
L level: 2.8 l
QFK 583/HD
Fuel tank 38 l EN590
NH 900 C
1.6 l ASTM D
Cooler Ambra Agriflu - OT
Total q.ty 4.6 l 3306
Type 1
Travel motor 0.7 l X 2
API GL5
Upper rollers Ambra HYPOIDE 90 45 cc X 2
NH 520 A
Idel wheels 80 cc X 2
Attachment and
dozer pin 20 - places
Swing cylinder pin
NLGI 2
Slewing bearing Ambra GRS PLUS 1 - place
QFK 586/GR
Idler adjuster 2 - place
Operating lever and
When required
pedal
NLGI 2
Rotation gear MG 2 1 - place
QFK 586/GR
Air conditioner R134A 700 g
Compressor Sanden SP-10 120 cc
(*) The systems are filled with the products indicated with the asterisk.
NOTE:
USE OF BIO-DEGRADABLE OILS
When you use bio-degradable oil, please refer to following:
• there are two types of bio-degradable oil available: vegetable-based and synthetic-based. We recommend using
synthetic oils, because vegetable ones have a maximum operating temperature of 80 °C.
For this reason, the degradation of vegetable-based oil occurs more rapidly, and they have a reduced service life;
• do not mix Bio-oil with original factory-filled mineral oil; in case it is necessary to use Bio-oil, flush the hydraulic
system that was filled with bio-oil three times;
• if you use Bio-oil, the performance of the rotation brake and that of the parking/travel brake will be reduced, be-
cause of the lower friction factor of Bio-oil compared to that of mineral oil;
USE OF COOLANT
• There are two types of coolantdepending on the corrosion inhibitors base: ORGANIC-base and INORGANIC-
base.
• Mini excavators is ORGANIC-base type factory filled.
• Both type can be used, BUT THEY CANNOT BE MIXED. Flush the cooling system before change coolant type.
2-13
--- Page 6 ---
3. ATTACHMENT DIMENSIONS
3.2.2 DIPPER MAINTENANCE STANDARDS
(1) Clearance of pin and bushing
Fig. 3-5 Clearance of pin and bushing on dipper section
Table 3-5
• E35B SR Unit: mm
Standard dimensions Tolerance
Location Piece Tolerance on Standard
Pin Tolerance on pin Serviceability Remedy
bushing bore Standard value value for
diameter diameter limit
diameter repair
Dipper point
+0.11
A (Connected part of 0.08÷0.16
+0.06
bucket)
Bucket connecting rod +0.11
B 0.07÷ 0.16
(Bucket side) +0.05
Bucket link
+0.08
C (Connected part of 0.05÷0.13
ø40 +0.03
dipper)
Bucket connecting rod +0.09 Replace
D –0.02 0.05÷0.14
(Idler link side) +0.03 0.7 1.0 bushing
–0.05
Bucket cylinder +0.25 or pin
D' 0.07÷0.30
(Rod side) +0.05
Bucket cylinder +0.13
E 0.09÷0.18
(Bottom side) +0.07
Dipper foot
+0.10
F (Connection with 0.07÷0.15
+0.05
boom) ø45
Arm cylinder +0.13
G 0.09÷0.18
(Rod side) +0.07
3-7
--- Page 7 ---
3. ATTACHMENT DIMENSIONS
3.5 SWINGING
3.5.1 SWING BRACKET DIMENSIONAL DRAWINGS
Fig. 3-12 Swing bracket dimensional drawings
Table 3-15
Unit: mm
No. NAME SIZE
A Distance between swing centre pin and boom foot pin 96
B Distance between boom foot pin and boom cylinder pin 176.8
C - ditto - 266.9
D Distance between swing centre pin and swing cylinder pin R264
E - ditto - 257
F Inside width of swing centre 306
F1 - ditto - 78
F2 - ditto - 73.5
G Inside width of boom foot 178
H Inside width for installing boom cylinder 61
J Inside width for installing swing cylinder 67
d1 Pin diameter of swing center ø65
d2 Pin diameter of boom foot pin ø45
d3 Pin diameter of boom cylinder ø45
d4 Pin diameter of swing cylinder ø45
3-17
--- Page 8 ---
11. TOOLS
11.5 SPECIAL SPANNERS FOR TUBES
Applicable tube diameter HEX Dimensions of a special spanner
Item no.
mm mm mm
15 27
18 32
22 36
28 41
11.6 SPECIAL TOOLS
No. Name Tools no. Shape Use
Torx driver 4.4
(with tamper
For instrument
1 proof) —
right cover
T25
(for M5)
11.7 APPLICATION OF SCREW LOCKING AND SEALING COMPOUNDS
Service Loctite Features
#242 Low strength
Screw locking compound #262 Middle strength
#271 High strength
Sealing compound #515 Sealing
11-5
--- Page 9 ---
13. MAINTENANCE STANDARDS AND TEST PROCEDURES
13.3 MEASURING ENGINE SPEED
13.3.1 MEASURING ENGINE SPEED
(1) Measuring instruments 2
1) The speedometer (1) (measures the engine
1
speed through the application of a sampling
tool (2) to one of the injection pipes).
2) Surface thermometer (measuring the surface
temperature getting contact of the probe with
the surface of hydraulic oil tank and radiator)
(2) Engine warming up operation
Start the engine and take the coolant temperature
within the range of 60 to 90 °C.
Check the coolant temperature with the coolant Fig. 13-1 Engine speed measurement
thermometer on the control panel. The white colour (The above figure shows concept)
zone shows approximately 67 to 105 °C of temper-
ature range.
Therefore, when the indicator is located at around
centre of the white zone, it is suitable for the engine
operation.
(3) Engine speed measurement
1) Apply the pick up of speedometer to one of
convenient injection pipes.
(See Fig. 13-1)
WATER TEMPERATURE
2) Measure the engine speed at idling with no
load, and compare it to the figure in the
STANDARD VALUE TABLE.
13-5
--- Page 10 ---
13. MAINTENANCE STANDARDS AND TEST PROCEDURES
13.7 MEASURING ATTACHMENT OPERATING PERFORMANCES
•TEST PROCEDURES
Measure 3-time each.
Apply average data of the above for judgement.
13.7.1 Cylinder speed
(1) Boom cylinder speed
• Engine: high idling
• Hydraulic oil temperature: 50 ÷ 60 °C
• Measurement position: completely retract the
arm cylinder, fully extend the bucket cylinder
and place the dozer blade on the ground.
• Then measure the time required for the bucket
to reach its highest point (lowest point) from its
lowest point (highest point) placing on the
ground. (Do not include the cushioning time).
(2) Arm cylinder speed
• Engine: high idling
• Hydraulic oil temperature: 50 ÷ 60 °C
• Measurement position: completely retract the
arm cylinder, fully extend the bucket cylinder,
position the arm horizontally and place the doz-
er blade on the ground.
• Then measure the time required for the arm
cylinder to completely retract (extend) from a
fully extended state (retracted state).
(3) Bucket cylinder speed
• Engine: high idling
• Hydraulic oil temperature: 50 ÷ 60 °C
• Measurement position: completely retract the
arm cylinder, position the arm horizontally and
place the dozer blade on the ground.
• Then measure the time required for the bucket
cylinder to completely retract (extend) from a
fully extended state (retracted state).
13-15
--- Page 11 ---
22. HYDRAULIC SYSTEM
22.3.3 TRAVEL OPERATING CIRCUIT 2) Travel motor
(Refer to fig. 71-3) a. The pressurized oil supplied to the travel
Pilot oil hydraulic system with operating lever motor shifts the spool of the counterbalance
valve (brake valve) (408), releases the
22.3.3.1 2nd speed operating circuit parking brake (403), opens the hydraulic
(Independent-forward travel) circuit having closed by the check valve
(1) Pilot circuit (407) and rotates the travel motor. It actu-
1) Shifting signal for 2nd speed travel. ates the speed shifting valve (404) when
When the “Rabbit and Turtle” mark (at the pow- the 2nd speed signal is sent. The high-pres-
er cut-off, it automatically takes back for 1st sure oil pumped through the shuttle valve
speed) on the knob of travel right lever is (406) passes through the speed change
pushed down, it actuates the 1st and 2nd speed valve (404), actuates the speed shifting pis-
travel shifting valve of solenoid valve (13). The ton (401) so that the engine rotates at high
pressurized oil signal for 2nd speed is generat- speed but with a low torque.
ed by the solenoid valve (13) and led to the b. When the motor reaches near to a self-run-
travel motor (4) through the swivel joint (10), ning condition (over-running) at going down
and shifts the 2nd speed shifting valve (404). a slope and so on, the oil pressure of supply
2) Changing travel valve spool side gets down to lower pressure, and the
The pilot secondary pressure is generated from counter balance valve [brake valve] (408)
pilot valve (12) by the operation for travel for- spool moves to the neutral position with the
ward. The pressurized oil is led to the Pb7 and spring force.
Pb6 ports on control valve (2) to shift the travel As the results, the passage in return oil side
valve spool. is throttled, and the motor speed is sup-
pressed by a back-pressure, then the motor
(2) Main circuit
is controlled to the speed corresponding to
1) Circuit up to travel motor (4)
the supplied oil volume of the pump.
The delivered oil from A1 and A2 ports on vari-
c. The counterbalance valve spool is so de-
able pump enters into the P1 and P2 ports of
signed that it is gradually shifted by a throt-
control valve (2), and led to the B7 and B6 ports
tle effect to stop or start the motor
through the travel valve. Then it is led to the A
absorbing shock at the start and stop of the
and B ports on left and right travel motors re-
machine.
spectively through the swivel joint (10).
d. When load increases during high speed
travel, the speed automatically shifts to the
1st speed, resulting in low speed and high
torque.
22-5
--- Page 12 ---
23. ELECTRICAL SYSTEM
Group Code Part Name
SW-1 (KEY) STARTER SWITCH
SW-2 WORKING LIGHTS SWITCH
SW-3 2nd SPEED SELECTOR SWITCH
SW-4 WIPER WASHER SWITCH
SW-5 ENGINE COOLANT TEMPERATURE SWITCH
SW-6 ENGINE OIL PRESSURE SWITCH
SW-7 HORN SWITCH
Switch
SW-9 LEVER LOCK SWITCH
SW-10 HEATER SWITCH (OPT)
SW-11 DECELERATION SWITCH
SW-15 HIGH AND LOW PRESSURE SWITCH
SW-16 CONDENSER SPEED SHIFT SWITCH
SW-39 OVERLOAD PRESSURE SWITCH
SW-40 OVERLOAD SWITCH
NOTE: the part number may be changed owing to modification, use them only for reference.
23-3
--- Page 13 ---
23. ELECTRICAL SYSTEM
Fig. 23-2 Engine (2/2)
1. Fix perpendicularly. Tightening torque 5.9 ÷ 9.8 Nm 4. Fix the clip with a bolt of alternator bracket. Fix with
2. Harness must pass below alternator taping part
3. Alternator 5. Fix with taping part
23-13
--- Page 14 ---
24. SYSTEMS COMPONENTS
24.1 HYDRAULIC COMPONENTS
24.1.1 HYDRAULIC PUMP
24.1.1.1 TECHNICAL SPECIFICATIONS
Ports:
No. Name Dimensions
S1 Suction port SAE 11/2
A1, A2 Delivery port PF 1/2
A1G, A2G Pressure port PF 1/8
A3 Delivery port PF 1/2
A4 Pilot delivery port PF 3/8
R1 Air bleed port (with breather valve) M10 x 1.0
Fig. 24-1 General view of hydraulic pump
Model AP2D18LV3RS7
Piston pump Gear pump Trochoid pump
Pump
P1 + P2 P3 P4
Working pressure MPa 23.0 20.0 3.5
Displacement cc/rev 16.0 x 2 8.6 5.1
Delivery flow l/min 38.4 x 2 20.6 12.2
Control system Total power shift control by tilting angle (power shift)
Rating speed rpm 2400
Weight kg 27.5
24-1
--- Page 15 ---
24. SYSTEMS COMPONENTS
24.1.2 ATTACHMENT CONTROL VALVE
24.1.2.1 TECHNICAL SPECIFICATIONS
580
497
435
300 22
290
145
78
0
A. The adjust nut (opposing flats: 22): fix adjust nut by
means of spanner (opposing flats: 22) when the le-
ver is installed. Then tighten the mating lock nut to
41 ± 0.3 Nm
OA. Operation angle (degree)
OT. Operation torque (Nm)
PR. Push rod stroke (mm)
SP. Secondary pressure (MPa)
T. Tightening torque: 6-PF1/4
T= 29.4 ± 2.0 Nm
Maximum primary
6.9 MPa
pressure
Delivery 15 l/min
Weight 1.6 kg
24-11
--- Page 16 ---
24. SYSTEMS COMPONENTS
* For respective operation section, only typical example is described.
- Manual swing operation (No. 6)
No. Name Q.TY
1 Body 1
2a Spool 1
2b O-ring 1