32 IMPORTANT: When lowering the boom, make sure that it does not hit the dozer and that the bucket teeth do not touch the dozer. OPERATION OF THE ARM Pull back the attachment control lever and the arm will be pulled in. To move the arm out, push the control lever towards the front. NOTE: When pulling in the arm, the movement may stop for a short moment when the arm is in its vertical position. This is caused by the combined load of the arm and bucket moving the cylinder piston away from the hydraulic fl ow causing a short delay in the cylinder action, until the fl ow catches up with cylinder piston. This is a characteristic of the hydraulic system and is no sign of a malfunction.
OPERATION OF THE BOOM To raise the boom, pull the attachment control lever back. The boom is equipped with a cushion cylinder which helps prevents excavated material in the bucket from falling out. Low hydraulic oil temperature, (e.g. after starting the engine in cold weather) the cushioning function will be effected for a short period of time (approx. 3 to 5 seconds). This condition results from the viscosity of the hydraulic oil and is not a sign of malfunction. The cushion cylinder will operate normally as the oil warms up.
Lever Position Pattern A Pattern B Attachment Control Lever (Left) A B C D Boom down Boom up Swing left Swing right Arm up Arm crowd Swing left Swing right Attachment Control Lever (Right) 1 2 3 4 Arm up Arm crowd Bucket crowd Bucket dump Boom down Boom up Bucket crowd Bucket dump