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SANY Crawler Hydraulic Excavator SY215CLC (CUMMINS QSB6.7 engine). Shop Manual - page 40

Disassembly and Assembly

SY215C

8-148

8.35.2 Removal and Installation

Removal

1. Remove the decorative button in order to

remove the interior decoration.

2. Remove the moving mechanism and the

motor.

●

Unscrew the bolts to remove the wiper
motor and moving mechanism from the
cab.

Decoration
button

Inner decor

ZX215-1006305

Bolt

Wiper motor

Moving
mechanism

ZX215-1006306

Disassembly and Assembly

SY215C

8-149

3. Remove the arm and the blade.

●

Unscrew the nut to remove the wiper
arm and blade from the cab.

Installation

●

Installation is to be performed in the re-
verse order of removal.

Arm bracket

Guard

Locknut

Cab

ZX215-1006307

Disassembly and Assembly

SY215C

8-150

8.35.3 Angle adjustment of wiper arm

●

The arm should stops moving when the
blade reaches the stopper.

●

If the arm is still working when the blade
reaches the stopper or the arm already
stops working before the blade reaches the
stopper, the moving angle of wiper should
be adjusted to prevent breakdown of the
wiper.

●

Adjust the wiper in such a way. Loosen the
locknut; adjust the arm working angle ac-
cording to actual condition. Make sure that
the wiper motor stops working at the mo-
ment that the blade reaches the mechani-
cal stopper.

Stopper

Blade

Arm

Locknut

ZX215-1006308

Disassembly and Assembly

SY215C

8-151

8.36 Relay

8.36.1 Engine relays

1. Starter relay - check

●

Check the conduction and action. Replace
the relay in case of any failure.

2. Mains relay - check

●

Check the conduction and action. Replace
the relay in case of any failure.

3. Heater relay

●

Check the conduction and action. Replace
the relay in case of any failure.

AA2A

SW(-)

L(-)

ZX215-1006309

1(+)

2(-)

Batter (+) terminal

2(-)

ZX215-1006310

5(-)

4(+)

(-)

(+)

Fuse

ZX215-1006311

Disassembly and Assembly

SY215C

8-152

4. Safety relay

Measure the resistance between terminal
2 and terminal 3.

Standard Value

Approx. 200W

●

Check the conduction and action. Replace
the relay in case of any failure.

3(R)

2(L)

1(S)

(P)6

(E)4

ZX215-1006312

8.36.2 Other relays

8.36.2.1 Function and location

Headlight relay

Parking relay

Work lamp relay

Mounting plate

Starter control relay

Pilot control relay

Horn relay

Relay harness

ZX215-1006313

Disassembly and Assembly

SY215C

8-153

8.36.2.2 Removal and Installation

Removal

1. Remove relay from its seat.

2. Remove the screw in order to remove the

relay seat and harness from the mounting
plate.

Installation

●

Installation is to be performed in the re-
verse order of removal.

Relay seat

Screw

Relay

Relay harness Mounting plate

ZX215-1006314

Disassembly and Assembly

SY215C

8-154

8.36.2.3 Relay connector and wiring

ZX215-1006315

105

63 13

606 105

RELAY WIRING TERMINALS

HORN

WORK LAMP

PILOT CONTROL

K10

STARTER CONTROL

PARKING

HEADLIGHT

RELAY MODEL:HELLA 4RD 007 903-027

HARNESS SOCKET TERMINAL

SOCKET MODEL: JACKET 8JA003526-00

Disassembly and Assembly

SY215C

8-155

8.37 Sensor

1. Water temperature sensor - check

●

Put the sensor into a vessel containing en-
gine oil.

●

Heat the oil to the specified temperature.
Stir the oil at the same time.

●

Measure the resistance value between the
terminal 1 and the sensor body at different
temperatures.

Standard

Value

50±0.2°C

80±10

60°C

56.3

(ref.)

80°C

29.5

(ref.)

100°C

16.5

(ref.)

106±0.3°C

14.3±1.0

120°C

(ref.)

●

Replace the sensor if the measured value
exceeds the standard one.

2. Engine speed sensor - check

●

Measure the resistance between terminal
1 and terminal 2.

Std. Value(25°C)

2.3±0.2k

●

Replace the sensor if the measured value
exceeds the standard one.

●

Insufficient tightening of the engine
speed sensor may cause signal output
failure. Tighten the sensor to specifi ed
torque.

Sensor body

ZX215-1006316

2 1

ZX215-1006317

NOTICE

Disassembly and Assembly

SY215C

8-156

4. Fuel level sensor - check

●

Swing the float up and down in order
to measure the effective angle of radial
swing, i.e. the line through the

oat and the

turning point will swing 105°.

●

Swing the

oat up and down. The vertical

distance between the upper limit and the
lower limit of the

oat should be 500 mm.

●

Move the float to its upper limit. Measure
the resistance between the sensor terminal
R and ground with a multimeter. The mea-
sured resistance should be Ru

≦

9.6

●

Move the float to its lower limit. Measure
the resistance between the sensor terminal
R and ground with a multimeter. The mea-
sured resistance should be Rd

≧

3. Pressure sensor - check

●

Input volt: 4.75~5.25VDC

●

Output volt: 0.5~4.5V

●

Pressure range: 0~50BAR

ZX215-1006319

Float

Lever

Casing

Ternimal R

Connector

Terminal A

Terminal B

Coupler

Body

Connector

Terminal C

ZX215-1006318

Disassembly and Assembly

SY215C

8-157

8.38 Connector Terminals - Insert and Remove

8.38.1 Insertion

1. Hold tightly a wire terminal at a distance of

about 25 mm from its end.

2. Hold the connector. Let the rear seal

face you.

3. Align the terminal with a hole on the seal

and push it perpendicularly to the bottom.
Slightly pull back the wire in order to
ensure that the terminal is locked in place.

ZX215-1006320

ZX215-1006321

ZX215-1006322

Disassembly and Assembly

SY215C

8-158

8.38.2 Removal

1. Hold the connector, with its back end facing

you. Select a suitable tool and clip on the
wire.

2. Push the tool along the wire into the

connector so that the tool can expand
the terminal lock shoulder and reach its

anged part.

3. Pull out the tool to remove the wire with

terminal.

ZX215-1006323

ZX215-1006324

ZX215-1006325

System Schematics

SY215C

9-1

9 System Schematics

9.1 Hydraulic System Diagram ...................................................................................... 9-3

9.2 Air-Conditioning Electrical Diagram ......................................................................... 9-4

9.3 Fuse Box Relay ....................................................................................................... 9-5

9.4 Control Switches and Monitor Electrical Diagram ................................................... 9-6

9.5 Operator Cab Electrical Diagram ............................................................................. 9-7

9.6 Chassis Electrical Diagram ...................................................................................... 9-8

System Schematics

SY215C

9-2

WARNING

Always read the Safety section of this man-
ual before attempting to operate or service
this equipment. Failure to do so could re-
sult in machine damage, personnel injury
or death.

Content .. 38 39 40 41 ..