Suzuki XL7 2007 Service Manual page 1571

Engagement Delay Test Results
Engagement time is LONGER than the specification time
for PARK or NEUTRAL to DRIVE engagement
Engagement time is LONGER than the specification time
for PARK or NEUTRAL to REVERSE engagement
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 cause may be from poor engine
performance.
• Vibration may also be caused by a small amount of
water inside the converter.
• Inspect the tires for the following conditions:
– Uneven wear
– Imbalance
– Mixed sizes
– Mixed radial and bias ply
• Inspect the suspension components for the following
conditions:
– Alignment wear or damage
– Loose fasteners
– Driveline damage or wear
• 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 flywheel 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 caused by heat distortion or fluid
contamination
Result
Automatic Transmission:
Possible Cause
• Line pressure is below specification
• Forward clutch (565) slipping
• Second clutch sprag (503) concern
• Line pressure is below specification
• Direct clutch (562) slipping
• Low and reverse clutch (511) slipping
• 1-2 reverse clutch (603) slipping
Clutch Plate Diagnosis
Composition Plates
Dry the plates and inspect the plates for the following
conditions:
• Pitting
• Flaking
• Delamination—splitting or separation of bonded clutch
material
• Wear
• Glazing
• Cracking
• Charring
• Chips or metal particles embedded in the lining
Replace a composition plate which shows any of these
conditions.
Steel Plates
Wipe the plates dry and check the plates for heat
discoloration. If the surfaces are smooth, even if color
smear is indicated, you can reuse the plate. If the plate is
discolored with heat spots or if the surface is scuffed,
replace the plate.
Causes of Burned Clutch Plates
The following conditions can result in a burned clutch
plate:
• Incorrect automatic transmission fluid type
• Incorrect usage of clutch plates
• Engine coolant in the automatic transmission fluid
• A cracked clutch piston
• Damaged or missing seals
• Low line pressure
• Valve body conditions
– The valve body face is not flat.
– Porosity is between channels.
– The valve bushing clips are improperly installed.
– The ball check valves are misplaced.
– The accumulator check valve assemblies are
misplaced.
5A-161