◆
Check that the air inlet nipple is tightened and
that the claw coupling is free from damage.
◆
Check the function of the throttle handle. Make
sure that it moves freely up and down.
◆
Check the function of the retainer. Make sure
that it locks the drill steel.
◆
Change damaged parts immediately.
◆
Replace worn components in good time.
◆
Check the through bolts of the machine. Make
sure that they are tightened.
◆
If the machine is equipped with a silencer,
check for damage.
Checking for wear
1. Check the wear in the chuck bushing using the
Atlas Copco (3091 0038 00) gauge (22 mm).
If the wear limit has been exceeded, the drill
steel shank will wear more quickly, or become
deformed. This will lead to stoppages and
increased drill-steel consumption.
2. Check the hoses, couplings and controls for
leakage and damage.
3. Check that the rock drill is receiving enough
lubrication. Fill the lubricator if necessary.
4. Drain the water separator.
Periodic maintenance
After each operating period of approximately 100
working hours or three times a year the machine
must be dismantled and all parts be cleaned and
checked. This work must be performed by
authorized staff, trained for this task.
Tightening torque
SRD 25, SRD 20
A. Backhead bolt, (50 Nm, 37 ft.lbf)
B. Intermediate part pin, for SRD 20 (25 Nm, 18
ft.lbf) and for SRD 25 (30 Nm, 22 ft.lbf)
C. Silencer, (8-10 Nm, 6-7 ft.lbf)
Damage patterns
Worn or broken parts must always be studied
carefully before they are replaced. They can give
important information about the condition of the
drill and about the way it is used and maintained.
Problem Cause
Steel parts are a bluish colour The parts have been
subjected to excessive heat.
This can be caused by
insufficient lubrication or idling
Steel parts have small almost
microscopic fissures on the
wear surfaces
See above
Irregular cavities on the
surface of bronze parts
See above
Cutting marks Secondary damage
Dirt inside the drill
Interior misalignment due to
uneven tension of the side
bolts
Safety and operating instructions SRD 20, 25
18 © Construction Tools PC AB | 9800 1883 01 | 2017-05-31
Original instructions
To Next Page
Loading...
Need help?
General
