WORKHORSE CUSTOM CHASSIS
Service Manual
Automatic Transmission – Allison
2007 W Series
© 2006 Workhorse Custom Chassis — All Rights Reserved
SECTION
7.2
PAGE
465
2007 W Series Chassis
WSM082106
Vehicle in General Information.
8. Remove the starter motor bolts and position the starter
motor aside. Refer to Starter Motor Replacement in
Engine Electrical.
9. Install the converter housing inspection cover.
10. Install the starter motor and starter motor bolts. Refer
to Starter Motor Replacement in Engine Electrical.
11. Lower the vehicle.
CAUTION:
Before servicing any electrical component,
the ignition and start switch must be in the
OFF or LOCK position and all electrical loads
must be OFF, unless instructed otherwise
in these procedures. If a tool or equipment
could easily come in contact with a live
exposed electrical terminal, also disconnect
the negative battery cable. Failure to follow
these precautions may cause personal injury
and/or damage to the vehicle or its compo-
nents.
12. Connect the battery.
NOISE AND VIBRATION ANALYSIS
A noise or vibration that is noticeable when the vehicle is
in motion MAY NOT be the result of the transmission.
If noise or vibration is noticeable in PARK and
NEUTRAL with the engine at idle, but is less noticeable
as RPM increases, the condition may be caused by
unsatisfactory engine performance.
• Inspect the tires for the following conditions:
– Uneven wear Refer to Tire Diagnosis - Irregular or
Premature Wear .
– Imbalance
– Mixed sizes
– Mixed radial and bias ply
• Inspect the suspension components for the following
conditions:
– Alignment and wear
– Loose fasteners Refer to Fastener Tightening
Specifi cations .
• Inspect the engine and transmission mounts for
damage and loose bolts.
• Inspect the transmission case mounting holes for the
following conditions:
– Missing bolts, nuts, and studs
– Stripped threads
– Cracks
• Inspect the fl ywheel for the following conditions:
– Missing or loose bolts
– Cracks
– Imbalance
• Inspect the torque converter for the following
conditions:
– Missing or loose bolts or lugs
– Missing or loose balance weights
– Imbalance
FLUID LEAK DIAGNOSIS
TOOLS REQUIRED
