TECHNICAL INFORMATION BULLETIN No. 120697
Alamo Industrial Technical Services Department
1502 East Walnut
Seguin, Texas 78155
Models: MacheteBoom MB21 & MB24
Bulletin No:
120697
Date:
Dec. 6, 1997
Lock Valve Installation Instructions:
Instructions for installing a lock valve on the tilt function of an Alamo Industrial Model Machete Boom product manufactured before May 1, 1997.
The nominal leak down rate for the cutter head tilt section of the electrically controlled positioning valve is one inch of rod travel in four minutes. If your machine exhibits a leak down rate substantially greater than this, it typically indicates excessive valve component wear due to contaminated oil in the tractor. Refer to the Tractor's Operator / Maintenance guide concerning Oil & Filter change intervals to eliminate contamination possibilities.
If the cutter head tilt cylinder leak down is greater than one inch of rod travel in four minutes and this is considered excessive, a lock valve may be added to the tilt function of the boom machine. Alamo Industrial has developed a cure for this and can provide (at a nominal charge) all the parts for a lock out vale for the tilt function. The Lock valve will only work on the tilt function of the Boom Machine due to the design of the hydraulic System. The only parts that must be provided by the installer are two, twelve inch pieces of 18 gauge wire. Each wire needs to have a # 8 ring connector on one end and a wire splice connector on the other end.
The drawings on the next page shows the details of the parts and their assembly. The Lock Valve must be installed in the
The following parts are required to make this modification:
Part No. | Qty | Description |
02972180 | 1 | Straight Hydraulic Adapter (available from Alamo Industrial) |
001654 | 1 | Hydraulic Fitting, 90° Elbow (available from Alamo Industrial) |
02972208 | 1 | Solenoid Valve Assembly (available from Alamo Industrial) |
2 | 18 gauge wire, 12" long each (furnished by installer) | |
2 | # 8 ring connectors (furnished by installer) | |
2 | 18 gauge splice connectors (furnished by installer) |
NOTE; Installation of this Lock valve will not be covered under warranty.
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MACHETE
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