Alamo Machete T 7740 User Manual

Page 41

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MACHETE

This document does not authorize the repair or replacement of parts under warranty

TECHNICAL INFORMATION BULLETIN No. 032200-1

Alamo Industrial ™ Technical Services Department

1502 East Walnut

Seguin, Texas 78155

830-372-2708

Models:

All Machete Boom , MB21 & MB24

Date:

Mar. 22, 2000

Bulletin No:

032200-1

New Oil Filter Kit P/N 02976069:

Detailed investigation of recent valve failures revealed that in the vast majority of the

incidences, the failures are attributable to contamination within the tractor hydraulic systems which
supply pressure to the control valve. Failure normally take the form of one or more inoperative or
poorly operating functions. Repair may involve the replacement of the electronic controller for the
section or, in severe cases, the replacement of the entire valve. Particulate contamination in the form
of small gear metal or brass particles created during break-in and operation and are not removed
during required maintenance of the tractor can enter the valve, this creates leakage due to wear or
clogging of passageways.

In response, an in-line pressure filter and fitting kit (Kit P/N 02976069) has been developed

for installation in the pressure line which delivers oil to the valve. The kit provides all the necessary
fittings, hardware and instructions to facilitate the correct installation.

Installation of the Filter Kit will greatly reduce the

possibility of the occurrence of failures within the Machete
control valve due to particulate contamination. This con-
tamination may result from poor maintenance of the tractor
hydraulic system or other hydraulic system performance
characteristics or problems.

An indicator located on the top of the filter housing

will indicate when the filter is bypassing thus requiring the
replacement of the filter element. The element is a canister
insert which is easily replaced by unscrewing the cannister.

In accordance with the published Warranty Policy,

failures proven to be the result of contamination of the
system oil due to poor maintenance, performance or repair
of the supply (Tractor) system will not be compensated
under Alamo Industrial Warranty.

Visual Indicater - Bypass

Filter Head

O-Ring

Filter Element

O-Ring

Back Up Ring

Filter Bow

Figure 1