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2.4. Receptacle Contact Springs
2.4.1. Old-Style Base Only
The N434647 mounting base normally will be equipped with the required quantity of
J680165 solderless receptacle contact springs and will accommodate one or two #14 or
#16 wires. However, it can be equipped with receptacle contact springs for one or two
#10 or #12 wires (J680181), or for one or two #18 or #20 wires (J680179). Make certain
the type of solderless receptacle contact springs that accompany the mounting base
are the appropriate ones before proceeding with their installation.
2.4.2. Improved One-Piece Base Only
The new one-piece mounting base (N438689-003) with hardware includes a full
complement of receptacle contact springs (M451142-2702) to accommodate one or two
#14 - #16 wires, mounting fasteners, and tags. It can, however, be equipped with
receptacle contact springs for one or two #10 - #12 wires (M451142-2703), or for one or
two #18 - #20 (M451142-2701). Make certain the type of solderless receptacle contact
springs that accompany the mounting base are the appropriate ones before proceeding
with their installation.
Each solderless receptacle contact spring should be inspected for physical damage
before proceeding with installation.
The following is recommended when installing solderless receptacle contact springs
after crimping wires:
a. Receptacle contact springs must be inserted into the base with the lock side
down or lanced tab up (refer to Figure 2-2).
b. Make certain the lanced tab is slightly compressed as the receptacle contact
spring is inserted along the top of the cavity. The lanced tab could have been
bent during handling and, if so, would not provide the required contact pressure
after the relay is inserted. If the lanced tab does not touch, pull it up slightly using
fingers or a suitable tool.
c. After insertion, pull firmly on the wire to make certain the receptacle contact
spring is locked in the cavity.
Copyright 2019
SM 4574F, Rev. 4, March 2019
PV-250 Track Relay
2-3
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