TM-9-2320-283-34-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1983
TM-9-2320-283-34-1 - Page 52 of 624
TM 9-2320-283-34-1
TROUBLESHOOTING
2-7.
TROUBLESHOOTING PROCEDURES (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
REAR TANDEM AXLES
WARNING
When power is supplied to the No-SPIN differential both wheels spin even when one wheel is on
ground.
To avoid injury raise and support both sides of tandem axles
when
checking
differential
action or
wheel
rotation with power.
Failure to
follow this precaution may result in
serious injury to you and other personnel.
NOTE
The No-SPIN® differential emits a normal metallic sound when torque is transferred from both
wheels to one wheel when cornering.
This sound does not indicate a malfunction.
16.
EXCESSIVE PLAY (BACKLASH).
Step 1.
Check differential bearing adjustment.
a.
Remove axle carrier (para 3-69 for forward-rear and para 3-75 for rear-rear).
b.
Adjust bearing (para 3-70 for forward-rear and para 3-76 for rear-rear).
Step 2.
Check ring and pinion gears for wear or damage.
Replace or repair axle carrier (para 3-69 and para 3-70 for forward-rear, para 3-75 and para 3-76 for
rear-rear).
2-8
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