Maintenence and Repair of the Starting System.

Maintenance of the M88A1
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85

(l) Since the ohmmeter reads zero Ohms, install a jumper wire from pin A

to pin D on the starter-module plug. Depress the START switch and at the

same time measure the resistance from circuit 82 terminal to the bus bar

terminal on the starter solenoid. The ohmmeter should read zero Ohms.

(m) Since the ohmmeter reads zero Ohms, reconnect circuit 82 at the

engine disconnect and depress the starter switch. Upon depressing the START

switch the starter turns very slowly. Therefore, the starter is defective

and must be replaced. The following paragraph describes the replacement of

the starter.

Maintenance and Repair of the Starting System.

This subparagraph

describes the removal of a defective starter, detected by the above

troubleshooting procedure, and the installation of a serviceable starter.

To replace the starter on the M88A1 recovery vehicle, the powerplant must

first be removed. But for the purpose of this task, it is assumed that the

powerplant has been removed; therefore, only the removal of the defective

starter and the installation of a new starter will be discussed.

(1) Removal of the Defective Starter.

Step 1. Disconnect the starter-module electrical connection to the starter

(figure 38, view A, on the following page)

Step 2. Remove the seven electrical cables from the starter, and the nuts

and lockwashers, and U-bolt (shown in figure 38, view B) holding the starter

onto the starter cradle assembly.

Step 3. Remove one bolt hidden behind the starter and the two exposed nuts

holding the starter to the engine crankcase and transmission adapter chassis

(figure 39, view C, on page 88).

Step 4.

Remove the starter from the starter cradle assembly (shown in

figure 39, view D).

(2) Installation of New Starter.

Step 1.

Procure a replacement starter, insert the starter drive into the

engine crankcase, making sure it meshes with the engine flywheel teeth

(figure 39, view D).