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© 2005 Alamo Group Inc.
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HYDRO 15 (HY15)
TECHNICAL INFORMATION BULLETIN No. 012496
Alamo Industrial ™ Technical Services Department
1502 East Walnut
Seguin, Texas 78155
830-372-2708
Models: All Hydraulic Units using P/N 00768991 Speed Increaser
Date:
Jan. 12, 1996
Bulletin No:
012496
This document does not authorize the repair or replacement of parts under warranty
New Sealing Washers Used on Plugs of Speed Increaser:
Speed Increaser Assembly P/N 00768991: Plug Seal Update, There have been some
isolated reports of the case plugs backing out on the above mentioned Speed Increasers, causing
loss of oil and cataastrophic failures of the gearbox.
Test conducted by Alamo Industrial revealed when ambient temperatures exceeded approxi-
mately 100° F. the nylon and plastic washers on the plugs would get soft or melt, this allowed the plug
to back out.
We have contacted our supplier of these parts and had the material specifications changes
for these washers. The new washers are made of aluminum istead of the old nylon or plastic. The
part number for the washers (P/N 00754536 and 00755424) will remain the same as there will be no
changes in the way they fit, only in the type material they are made out of.
All units operating in warm temperature of 100° F. or higher should be changed right away
to prevent plugs from backing out.
Figure 1