Troubleshooting Maintenance and Repair of Vehicle

MAINTENANCE OF THE M88A1 - OD1672 - LESSON 3/TASK 2

(b) Cables. Electrical cables are rubber covered. The ends of all

cables terminate in a pin or socket on a connector, plug, or receptacle, or

at a cable terminal.

The cables are crimped or soldered to the pins,

sockets, terminals, or ferrules.

(c) Connectors. Plug and receptacle-type connectors are used on the

M88A1 recovery vehicle. The plug-type connector (figure 42, view A, on the

following page) has four main components: the shell assembly, coupling nut,

grommet, and retaining nut. The receptacle-type connector (figure 42, view

B) has three components: the receptacle assembly, grommet, and retaining

nut. The receptacle assembly is secured to a box or panel with four screws.

The plug is secured to the receptacle with a coupling nut.

A waterproof

connection is made with the retaining nut by compressing the grommet to the

ends of the plug or shell assemblies. The shell and receptacle assemblies

have either pins or sockets for one or many electrical connections.

Waterproof rubber connectors are also used that have a male and a female

component.

The female portion consists of a rubber shell, sleeve and

ferrule.

The male part consists of a rubber shell, a C washer, and a

terminal.

The friction-fit union of the two halves forms a waterproof

connection.

4.

Troubleshooting Maintenance

and

Repair

of

Vehicle

Wiring

and

Miscellaneous Electrical Components

a.

General.

Listed below is an example of the correct procedure unit

personnel would follow for troubleshooting, maintenance, and repair of the

M88A1 recovery vehicle miscellaneous electrical components and vehicle

wiring.

b.

Troubleshooting.

The troubleshooting procedure provided below

involves the performance of those fault isolation functions required to be

performed as a result of the defect: VENTILATOR BLOWER DOES NOT RUN.

As

listed below, the first step in this procedure is to check for a defective

ventilator blower (VENT BLOWER) switch.

Step 1.

Check the VENT BLOWER switch (figure 40, view B, on page 89).

Ensure that the MASTER switch is in the ON position and check the VENT

BLOWER switch to ensure that it is tightly secured on its panel mounting.

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