Rhino Mounts DB150 manual Operation, 2.4 3-Point Hitch, Front End Weight, Power Take Off PTO

OPERATION

2.4 3-Point Hitch

The tractor 3-point hitch must be rated to lift at least 2140 lbs.

The DB150 boom mower is designed to be mounted on a tractor with a CAT II or III 3-point hitch. Refer to the tractor operator’s manual for the category of the tractor being used. If the hitch does not conform to ASABE CAT II or III dimensions, the mower may not fit or raise properly. Consult an authorized dealer for possible modification procedures to mount nonconforming hitches.

Depending on the hitch category, certain size pins are used to attach the mower to the tractor. CAT II hitches require 7/8” lower and 3/4” upper diameter hitch pins. CAT III hitches require 1-7/16” lower and 1-1/4” upper diameter size pins.

CAT II Implement / Hitch Specification		CAT III Implement/ Hitch Specification
Width from outside to outside A-frame	32-3/8”	Width from outside to outside A-frame	38”
Quick Hitch width inside lug to lug	33-5/8”	Quick Hitch width inside lug to lug	39-1/4”
Height from bottom hitch pin to top pin	19”	Height from bottom hitch pin to top pin	22”
Lower pin diameter	1-1/18”	Lower pin diameter	1-7/16”
Upper pin diameter	1”	Upper pin diameter	1-1/4”
Lynch pin diameter	15/32”	Lynch pin diameter	15/32”

2.5 Front End Weight

A minimum of 20% total tractor weight must be maintained on the tractor front end at all times. Front end weight is critical to maintain steering control and to prevent the tractor from rearing up while driving. If the front end is too light, add weight until a minimum of 20% total weight is reached on the front tires. Front weights and weight carriers can be purchased through an authorized tractor dealership. OPS-U- 0005

2.6 Power Take Off (PTO)

Depending on the unit, the mower is designed to operate at a PTO speed of 540 or 1000 RPM. Most tractors operate at either 540, or a combination of 540 and 1000 RPM PTO speeds. The operating speed of the mower and tractor can be determined by the number of splines on the driveline yoke and PTO output shaft. Those operating at 540 RPM will have a 6-spline shaft and those operating at 1000 RPM will have a 21-spline shaft or a 1-3/4” 20 spline shaft. Refer to the tractor owner’s manual for instructions to change PTO speeds on models that operate at more than one speed.

If operating an older model tractor where the tractor’s transmission and PTO utilize one master clutch, an over-running clutch must be used between the PTO output shaft and the driveline of the mower. An authorized tractor dealer can provide the over-running clutch and its installation if needed. OPS-U- 0006

DB150 07/11 Operation Section 4-5

© 2011 Alamo Group Inc.

OPERATION