TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980

TM-9-2320-273-34 - Page 167 of 801

TM9-2320-273-34

TA 002233

Figure 5-51. Testing Armature for Short Circuits.

c. Field Coils.

(1)

Check the field coils for ground, using a 115 vac lamp. Make sure the coils are dry if they

have been cleaned. Using the growler test lamp, touch one test probe on the field ring and the other on the

field terminal. The lamp should not light. If it does, the coils are grounded and require replacement.

d. Shaft and Lever.

(1) Inspect the plunger and shaft assembly for excessive wear or burrs in the seal area. Replace

the shaft if defective.

(2) Check the shift lever square cams for damage or excessive wear, Replace if defective.

5-13. Assembly.

a. Field Coils Replacement (fig. 5-52).

(1) Heat replacement field coils in an oven to approximately 300°F (149°C).

NOTE

Heating the field coils makes them become

pliable and they conform to the field ring

more readily.

5-39