Safety, Operation and Maintenance Manual-September 30, 2019
5-31
cylinders are used in pair, the matched
cylinder should be replaced at the same time).
Precautions for cylinder maintenance
1. Check the hydraulic cylinder during construction. If the hydraulic cylinder acts slowly, or no
action, immediately shut down the engine for inspection.
2. The cylinder on the rotary drilling rig bears load. Use caution during repair or replacement.
3. When repairing or replacing the balance valve on the cylinder, retract the cylinder piston rod to
minimal extent, then dismantle and replace it.
4. If you have any questions, contact SANY after sales service department.
5.4.1.3 Gearbox gear oil level- check
NOTICE
Risk of damaging the rotary drive!
An incorrect oil level can damage the gear during subsequent operation.
The oil level must be in the 1/2–2/3 position of the sight glass.
NOTICE
Risk of damaging the rotary drive!
Clouding of the oil indicates the entry of water. The rotary drive could be damaged during
subsequent operation.
Take an oil sample, have the oil analyzed, and change the oil if there is a negative result to
the oil analysis.
Fig.5-9 Sight glass
Before any operation, make sure the rotary
drive has been at standstill for at least 15 mi-
nutes and the oil is at operating temperature.
Check gear oil level of gearbox:
1. Set the rotary drive to the upright position.
2. Check the sight glass and make sure the oil
level is betewwn 1/2-2/3 of the sight glass.
SR400R Rotary Drilling Rig
Maintenance
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