JLG 340AJ Service Manual - Manual (Page 318)

SECTION 7 - BASIC ELECTRICAL INFORMATION & SCHEMATICS
7-4 – JLG Lift – 3121259
When applied to electrical connections, dielectric grease helps
to prevent corrosion of electrical contacts and improper con-
ductivity between contacts from moisture intrusion. Open and
sealed connectors benefit from the application of dielectric
grease.
Dielectric grease shall be applied to all electrical connectors at
the time of connection (except those noted under Exclusions).
Installation of Dielectric Grease
Before following these instructions, refer to excluded connec-
tor types (See Exclusions below).
1. Use dielectric grease in a tube for larger connection
points or apply with a syringe for small connectors.
2. Apply dielectric grease to the female contact (fill it
approximately ½ full; see example below)
3. Leave a thin layer of dielectric grease on the face of the
connector
4. Assemble the connector system immediately to prevent
moisture ingress or dust contamination
5. Pierce one of the unused wire seals prior to assembly if
the connector system tends to trap air (i.e. AMP Seal)
and then install a seal plug.
Deutsch HD, DT, DTM, DRC Series
The Deutsch connector system is commonly used for harsh
environment interconnect. Follow the installation instructions.
AMP Seal
The AMP Seal connector system is used on the Control ADE
Platform and Ground Modules.
Apply dielectric grease to the female contact. If trapped air
prevents the connector from latching, pierce one of the
unused wire seals. After assembly, install a seal plug (JLG
#4460905) in that location to prevent moisture ingress.
Note that seal plugs may be installed by the wire harness man-
ufacturer if an unused wire seal becomes compromised (wire
inserted in the wrong cavity during assembly and then cor-
rected).
Figure 7-5. Application to Female Contacts