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DS-320SA
Instruction Manual
- 70 -
www.doallsaws.com
14.6
REPLACING THE COUPLING BETWEEN THE ELECTRIC MOTOR AND
HYDRAULIC PUMP
After replacing (or lubricating) the coupling, make sure to reassemble the parts back into their correct
position.
There should be a clearance of 0.5 – 1 mm between the heading of the coupling (Pos. 1) and the spacer
(Pos. 2). Use a slide gauge (Pos. 5) to measure the coupling’s position against the motor flange. Install a
new coupling or motor into the same position.
If there were no clearance between the coupling’s heading and the spacer, the motor shaft (Pos. 3) would
push into the pump’s rotor (Pos. 4). A spot would be scraped out in the pump’s body immediately and the
pump would lose its performance (it would be unable to pump pressure oil). The only remedy is then to
purchase a new pump.
pic: 14-2