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SANY Crawler Hydraulic Excavator SY215CLC (CUMMINS QSB6.7 engine). Shop Manual - page 21

Standard Values

SY215C

5-8

Cat.

Item

Measurement condition

Unit

Std. value for

new machine

Judgement

criteria

ork Equipment

ime Delay

Boom

●

Hydraulic oil temp: Within operational range

●

Engine running at low idle

●

Working mode: H

●

Time required from maneuvering the joystick
to the moment that the bucket reaches the
ground and begins to push the machine up-
ward, within 50mm off the ground

●

For measuring posture see Work Equipment
5 on Pg. 4-12.

sec.

Max. 1.0

Max.1.2

Arm

●

Hydraulic oil temp: Within operational range

●

Engine running at low idle

●

Working mode: H

●

Average time required for operating the con-
trol lever back and forth till the arm starts to
move

●

For measuring posture see Work Equipment
6 on Pg. 4-13.

sec.

Max. 2.0

Max.2.8

Bucket

●

Hydraulic oil temp: Within operational range

●

Engine running at low idle

●

Working mode: H

●

Average time required for operating the con-
trol lever back and forth till the arm starts to
move

●

For measuring posture see Work Equipment
7 on Pg. 4-13.

sec.

Max. 1.0

Max.3.6

Internal Leakage

Cylinders

●

Hydraulic oil temp: Within operational range

●

Engine running at high idle

●

Leakage amount for one minute with cylinder
or travel measured at relief condition

ml/

min

Central Swivel

Joint

Performance in Combined

Operations

Amount of deviation in

simultaneous operation of

work equipment and travel

●

Hydraulic oil temp: Within operational range

●

Engine running at high idle

●

Working mode: H

●

Travel Speed: Low

●

Amount of deviation measured for 20 m after
traveling about 10 m on a hard level ground

●

For measuring posture see Travel 2 on Pg.
4-9.

Max.200

Max.220

Standard Values

SY215C

5-9

Machine postures for measuring (For all models)

Control value: Spool stroke

Travel 1: Travel speed (without load)

Travel 2: Travel speed (actual run), Travel de-
viation

ZX215-1003002

ZX215-1003005

ZX215-1003006

45°

Standard Values

SY215C

5-10

Swing 1: Swing brake angle, time taken to
start swing, time taken to swing

Travel 3: Travel deviation

Travel 4: Hydraulic drift of Travel

ZX215-1003007

10m

ZX215-1003008

12°

ZX215-1003003

Standard Values

SY215C

5-11

Work equipment 1: Hydraulic drift of work
equipment

Work equipment 2: Boom speed

Swing 2: Hydraulic drift of swing

ZX215-1003004

15°

Sprocket

ZX215-1003009

ZX215-1003010

Standard Values

SY215C

5-12

Work equipment 3: Arm speed

Work equipment 4: Bucket speed

Work equipment 5: Boom delay

ZX215-1003011

ZX215-1003012

ZX215-1003013

Standard Values

SY215C

5-13

Work equipment 6: Arm delay

Work equipment 7: Bucket delay

ZX215-1003014

ZX215-1003015

Standard Values

SY215C

5-14

BLANK

PAGE

Testing and Adjusting

SY215C

6-1

6 Testing and Adjusting

6.1 Engine Speed - Test and Calibrate .......................................................................... 6-3

6.2 Exhaust Gas Color - Test ......................................................................................... 6-5

6.3 Engine Speed Sensor - Adjust ................................................................................. 6-7

6.4 A/C Compressor Belt Tension - Test and Adjust ..................................................... 6-8

6.5 Swing Bearing Clearance - Measure ..................................................................... 6-10

6.6 Track Tension - Test and Adjust ............................................................................. 6-12

6.7 Hydraulic Pressure in Hydraulic Circuits - Test and Adjust .................................... 6-14

6.8 Control Circuit Oil Pressure - Test and Adjust ........................................................ 6-19

6.9 Solenoid Valve Output Pressure - Measure ........................................................... 6-21

6.10 Pilot Valve Output Pressure - Measure ................................................................ 6-23

6.11 Pilot Valves (Work Equipment and Swing) - Adjust .............................................. 6-25

6.12 Work Equipment Hydraulic Drift - Test ................................................................. 6-26

6.13 Residual Pressure in Hydraulic Circuit - Release ................................................ 6-29

6.14 Oil Leakage - Measure ........................................................................................ 6-30

6.15 Air in Each Component - Bleed............................................................................ 6-35

Testing and Adjusting

SY215C

6-2

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.

Testing and Adjusting

SY215C

6-3

★

Engine speed calibrator

Part Number

Part Name

B249900001206 Engine Speed Calibrator

6 TESTING AND ADJUSTING

6.1

Engine Speed - Test and Calibrate

6.1.2 Testing

Start the engine and keep the engine running
until engine coolant temperature rises within
the operational range. Key in the code on the
monitor and check if the engine speed is nor-
mal in each throttle position.

Testing Items:

1. Engine speed at low idle

2. Engine speed at fuel control dial position 11

(H and S modes)

3. Engine speed at relief, with fuel control

dial placed at position 11 (H and S modes)

4. Engine speed at auto idle

6.1.1 Adjusting

Speed calibration steps:

1. Plug the calibrator and chassis harness;

2. Set the calibrator to "Calibrate" mode and

turn the calibrator dial counterclockwise to
its end;

3. Start the engine;

4. Adjust the calibrator dial to the max. speed

under H mode;

Note: Memory SW UP: Calibrating mode

Memory SW DOWN: monitoring mode

ZX215-1004001

LED

MEMORYON

DOWN

RPW

A/I

Pwr Mode

Analog Output

Calibrator Appearance

Slice Displays

MEM

State

Dial

Testing and Adjusting

SY215C

6-4

Remark:

When the control levers are neutralized, en-
gine speed will drop automatically to about
1350 rpm after 3 seconds. This not only re-
duces loss of the hydraulic system and engine
wear, but also cuts fuel consumption and re-
duces noise. When any of the control lever is
moved, the engine resumes its original speed.

5. Press the button under H. The correspond-

ing power mode LED flashes, indicating
the controller is storing data. No operation
should be performed during the moment.
The storing process will finish in about 5
seconds. Current data is regard as the
max. engine speed under this mode.

6. Increase the engine speed to the max.

speed under S mode. Press the button
under S. The corresponding power mode
LED flashes, indicating the controller
is storing data. No operation should be
performed during the moment. The storing
process will finish in about 5 seconds.
Current data is regard as the max. engine
speed under this mode.

7. Calibrate the engine speed for the L mode

and for auto idle following the description
in step 5 and step 6.

8. Lower the engine speed to the minimum.

9. Turn off the engine.

Set the calibrator to "Monitoring" mode.
Power on and start the engine. Make sure
that the max. engine speed calibration is
correct under each mode.

10. If engine speed calibration fails, repeat

step 1 through step 9.

Testing and Adjusting

SY215C

6-5

6.2 Exhaust Gas Color - Test

★

Testing tools

Model

Part Name

YDJ-2006

Smoke meter

SV-2TY

Opacimeter

Do not touch any hot parts when mounting

or dismounting the testing tools.

1. Measure with a smoke meter

1) Put the

lter paper into the smoke me-

ter.

2) Insert the waste gas intake pipe into

the exhaust pipe.

3) Start the engine and keep the engine

running until engine coolant tempera-
ture is within the operational range.

4) When engine speed increases sudden-

ly or is kept at high idle, direct exhaust
gas through smoke meter to the filter
paper.

5) Remove the

lter paper from the smoke

meter. Read the smoke value through
the apparatus provided.

6) Remove the testing tools after measur-

ing. Make sure the machine goes back
to its normal state.

ZX215-1004002

Testing and Adjusting

SY215C

6-6

2. Measure with an opacimeter

1) Mount the opacimeter onto the exhaust

pipe by clamping it to the pipe outlet.

2) Open the opacimeter and preheat it for

about 15 minutes.

3) Start the engine and keep the engine

running until engine coolant tempera-
ture is within the operational range.

4) When engine speed increases sud-

denly or is kept at high idle, use the
opacimeter to read the smoke value of
exhaust gas.

5) Remove the testing tools after measur-

ing. Make sure the machine goes back
to its normal state.

ZX215-1004003

ZX215-1004004

Testing and Adjusting

SY215C

6-7

6.3 Engine Speed Sensor - Adjust

★

Remove the engine speed sensor (1)
before adjusting. Check for presence of
metal chips and for damaged sensor top.
Restore the sensor.

1. Screw on the sensor (1) until its end con-

tacts with ring gear tip (2) of the

ywheel.

2. Unscrew the sensor some degrees.

★

Degrees: 1.2~1.4 turns

★

Adjust the clearance (a) between the
sensor end and the flywheel edge to
2±0.2 mm.

3. Tighten the sensor (1) with the nut (3).

Nut: 49.0~68.6 N·m {5~7kg·m}

4. Make sure that the engine speed is dis-

played properly on the control panel after
adjustment.

ZX215-1004021

ZXT215-1004001

Testing and Adjusting

SY215C

6-8

6.4 A/C Compressor Belt Tension - Test and Adjust

Reference

Use a tensiometer to check the compressor
belt tension.

New Belt

Used Belt

637±108 N

{65±11 kgf}

441±88.2 N

{45±9 kgf}

ZX215-1004022

Drive Pulley

Compressor Belt
Pulley

6.4.1 Testing

Press the intermediate point of the belt be-
tween the drive pulley and the compressor pul-
ley with a

nger force of about 58.8 N

(

6kgf

)

and measure de

ection (A) of the belt, which

shall be 5

8 mm (0.20 in

0.31in).

6.4.2 Adjusting

★

If the belt de

ection is abnormal, adjust it

according to the following procedure.

1. Loosen the bolts (1) and (2).

2. Move the compressor (3) and the bracket

(4) together to adjust belt tension.

3. After positioning the compressor (3),

tighten the bolts (1) and (2).

4. Check belt tension again after adjustment.

ZXT215-1004002

Testing and Adjusting

SY215C

6-9

Note:

●

Check each belt for damage. Check the V
- groove and the V - belt for wear. In addi-
tion, it is especially important to keep the V
- belt free from friction with bottom of the V
- groove.

●

Contact local Sany dealer and replace the
belt in case of the following conditions.

●

The fan belt has been stretched and
little margin is left for adjustment.

●

Cuts or cracks are found in the belt.

●

Abnormal sliding or noise.

●

When a new belt is mounted, readjust the
belt tension after one hour operation.

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