Alamo Machete T 7740 User Manual

Page 74

2-16

MACHETE

SERVICE BULLETIN No. 971404

Alamo Industrial Technical Services Department

1502 East Walnut

Seguin, Texas 78155

830-372-2708

Restrictor Installation Lift & Dipper Cylinder Function:

Subject:

Lift and/or dipper functions drop to fast. When both functions are combined, sudden drop may

occur. Install one way restrictors in the dipper cylinder rod end port and the tilt cylinder barrel end port
of the control valve to prevent the sudden drop of the boom and damage to the boom and frame.

Service Required:

Remove the cover from the control valve, clean the control valve of all debris to prevent
contamination from entering system. Make certain that Boom is lower with head resting on the
floor. Make certain that all pressure is relieved from the system and all hoses.

Remove and plug the hose from the rod end of the dipper cylinder (Blue Tag) at the valve.
Remove the adapter from the valve.

Install the new adapter (# 02972159), orifice plate and old adapter as shown in figure 1. Be
certain that the groove in the orifice plate is installed as shown. Perform the same procedure
to the barrel end of the lift cylinder valve port (Orange and White Tag)

Reassemble the machine and clean any spilled oil. Test for operation by running through its
cycle to remove any trapped air in system and inspect for leaks.

Parts Required:

Part No.

Qty

Description

02972159

Straight Adapter

02969398

Orifice Plate .055"

See Operators manual or Service Manual
for Port locations on valve if needed.

Models:

Machete Boom Mowers

Date:

Apr. 14, 1997

Bulletin No:
971404
(Old # 970004A)

Parts:

100 % at Dealer Net

Labor:

1.5 hrs. at Dealer registered
Shop Rate

Termination Date:

Oct. 1, 1997

Old Parts Disposition:

No Returnable Parts
involved

Warranty Compensation will be provided following proper filing of warranty claim in accordance with
the Alamo Industrial Warranty Policy. Claim allowance may vary in accordance with laws governing a
specific region. Any Warranty associated with this service bulletin must be within authorized dates.

Figure 1

To Hose

To Valve

Orifie Plate
P/N 02969398
Note orientation
of notch in plate
Notch away from
valve

Existing
Adapter

New Adapter
P/N 02972159