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SY75C Excavator OMM
Maintenance Procedures
SANY
Operation and Maintenance Manual — 0220
5-89
TABLE OF
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INT
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SA
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CONTROLS
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OPERA
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MAINTENAN
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SPECIFICA
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OP
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EQUIPMENT
Track Tension - Reduce
1. Ensure that there is no gravel or mud between the
sprocket and the track link before decreasing track
tension.
2. Position yourself off to the side, not in front of grease
valve (b).
3. Slowly turn grease valve (b) counterclockwise in 90°
increments (one quarter turn) to release grease and
decrease track tension.
NOTE:
The grease will come out from behind the
grease valve.
NOTE:
Do NOT remove the grease valve.
4. If grease does not come out smoothly, move the machine back and forth for a short distance, then repeat step 3.
5. Check track tension.
NOTE:
When the correct track tension has been achieved, turn the grease valve clockwise in 90° increments
until it is tightened to a torque of 35 lb-ft (47 N·m).
6. Move the machine forward at idle speed for a distance that is equivalent to the length of an unfolded track.
7. Check track tension again and repeat this procedure as needed until the correct track tension is achieved.
Upper Structure and Lower Structure - Check
This machine consists of two major component groups:
•
The lower structure with its various components and assemblies.
•
The upper structure with its various components and assemblies.
WARNING!
Do not loosen the grease fitting (a)! The grease fitting is under extreme pressure and can exit
the grease valve (b) quickly and forcefully.
Do not place yourself or others directly in front of the grease valve (b) when loosening the
valve.
Wear suitable personal protective equipment in the form of protective clothing, gloves, safety
glasses and head protection to protect against the sudden release of pressurized grease.
Failure to observe and follow these warnings could result in death or injury.
Fig. 5-143
a
b
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