Alamo Machete T 7740 User Manual

Page 10

1-4

MACHETE

TECHNICAL INFORMATION BULLETIN No. 092895

Alamo Industrial Technical Services Department

1502 East Walnut

Seguin, Texas 78155

830-372-2708

Models:

All Hydraulic mowers using the 02964028 Push-Pull Switch

Date:

Sep. 28, 1995

Bulletin No:

092895

Failures of the mower push-pull switch:

Alamo has recently received reports of failures of the referenced switch. The failures

modes are:

(a)

Knob pulls off rod.

(b)

Rod and Knob pulls out of switch body.

Test performed on numerous switches indicates that the (b) failures are due to excessive

force being applied to the knob when shutting off the mower. Specifically, the knobs are usually
roughly slapped to turn the mower off. After internal parts of the switch are damaged, the rod can
then be pulled out easily. The (a) failures are due to the knobs not being securely tightened.

To prevent these failures from occurring, or to replace a damaged switch, use the following

procedure to adjust the travel of the switch. (See attached diagram).

Install the switch body in the holder and tighten the nut.

Screw the Knob on the rod to the bottom of the thread, but do not overtighten. It
will probably be necessary to hold the rod with pliers to get the knob tight, if you do
use caution not to score the rod with the pliers.

Measure the distance (if any) between the knob and the nut. Record the
measurement.

If a Gap exists between the knob and the nut, remove the knob.

Remove the nut and install the same thickness of flat washers that was
measured in step 3. Install and tighten the nut> DO NOT install more washers
than needed to take up the space. Flat Washer Part No. 00023500 or equivalent can
be used.

Install the Knob, using Locktite or similar thread locking compound. Thread the
knob on the rod all the way. Test to make sure that when the switch is "Off" (with
rod pushed in) that the knob can not travel further into the switch.

Continued Next Page