INSTALLATION AND OPERATION
SX TRANSISTOR CONTROL
Page
14
Section 4.3 Recommended Lubrication of Pins and
Sockets Prior to Installation
Beginning in January of 1999, GE implemented the
addition of a lubricant to all connections using pins and
sockets on EV100/EV200 and Gen II products. Any
connection made by GE to the A, B, X, Y, or Z plugs,
includes the lubricant NYE 760G to prevent fretting of
these connections during vehicle operation.
Fretting occurs during microscopic movement at
the contact points of the connection. This movement
exposes the base metal of the connector pin which,
when oxygen is present, allows oxidation to occur.
Sufficient build up of the oxidation can cause intermittent
contact and intermittent vehicle operation. This can occur
at any similar type of connection, whether at the control
or in any associated vehicle wiring, and the resultant
intermittent contact can provide the same fault indication
as actual component failure.
The addition of the NYE 760G lubricant will
prevent the oxidation process by eliminating the access
of oxygen to the contact point. GE recommends the
addition of this lubricant to the 12 pin and 23 pin plugs of
all new Gen II controls at the time of their installation
into a vehicle
When servicing existing vehicles exhibiting
symptoms of intermittent mis-operation or shutdown by
the GE control, GE recommends the addition of this
lubricant to all 12 and 23 pin plugs, after proper cleaning
of the connectors, as a preventative measure to insure
fretting is not an issue before GE control replacement.
Also, for long term reliable control operation, the plug
terminals must be maintained per these instructions with
the recommended contact cleaner and lubricant which
provides a high degree of environmental and fretting
protection.
New and re-manufactured control plugs are cleaned and
lubricated prior to shipment from the factory. However,
in applications where severe vibration or high
temperature cycling and excessive humidity ( such as
freezers ) are present, it is recommended that the plug
terminals be cleaned and lubricated every year, per this
instructions. In normal applications, plug maintenance
should be performed every two years, unless intermittent
problems arise with the plugs, requiring more immediate
attention.
Warning: Do not use any other cleaners or lubricants
other than the ones specified.
WARNING: Before conducting maintenance on the
vehicle, jack up the drive wheels, disconnect the
battery and discharge the capacitors. Consult the
Operation and Service Manual for your particular
vehicle for details on discharging the capacitors; this
procedure differs between SCR and Transistor
controls.
1.
Disconnect
plug from controller or mating plug.
2.
Locate
the plug that contains the socket (female)
terminals.
Maintenance needs only to be performed
on the plug containing the socket (female) type
terminals. Reconnecting the plugs will lubricate the
pin (male) terminals.
3.
Clean
each terminal using Chemtronics
contact
cleaner “Pow-R-WasH CZ “ as shown in Figure 1.
Figure 1
4.
Lubricate
each terminal using Nye
760G lubricant
as shown in figure 2. Apply enough lubricant to each
terminal opening to completely fill each opening to a
depth of .125” maximum.
Figure 2
5.
Reconnect
plugs.
Reference
Cleaner
Chemtronics
Pow-R-WasH CZ
Contact Cleaner
Lubricant
Nye
Lubricants NYOGEL
760G
GE Plug Lub Kit Contains both above products:
328A1777G1
Chem
troni
cs
Po
w-
R
-
W
asH
CZ
cont
act c
leane
r
ciroz
ane
Nye
LU
BRICA
N
TS
Updated Sept 2019
