Toro Workman 3000 Series, Service Manual

Page: 253 / 306

Front Wheel
Drive (4WD)
Inspect Constant Velocity (CV) Joint Boot and Test CV Joint
Inspect CV Joint Boot
Inspect CV joint boot after every 200 hours of operation.
A torn boot is the most common cause of CV joint fail-
ures.
NOTE: A worn and noisy CV joint with the boot in good
condition and filled with grease is not uncommon. Pot-
holes, curb contact, or collision damage can chip bear-
ing components and initiate worn conditions.
1. Look for grease on the suspension, inner tire side-
wall, or fender to indicate a possible torn boot. Inspect
boot for cracks, holes, tears, or loose clamps. Dirty
grease within the boot may indicate damage to the CV
joint.
2
3
1
Figure 7
2. If the boot is cracked or torn, or has any holes or
1. Inboard boot 3. Differential
loose clamps, remove CV joint (see Constant Velocity
2. Outboard boot
Joint in this section) and replace boot.
Test CV Joint
1. Test drive vehicle on a smooth surface to verify CV
joint problem.
2. Accelerate or back–up vehicle slowly with the front
wheels turned. Listen for snapping or clicking noise at
the wheel, then drive straight ahead.
A. If the noise remains constant, the wheel bearing
is the likely problem (see Front Wheel and Axle
Housing Assembly in this section).
B. If the noise gets louder when turning, the out -
board CV joint is likely worn. A badly worn joint will
snap or click when driving straight ahead, however
the noise will increase when accelerating or backing
up into a turn.
3. Accelerate vehicle quickly and straight ahead. Vibra-
tion or shudder indicates a worn or sticking inboard CV
joint.
4. Accelerate vehicle at an angle over a ramp or up a
hill. A clunking noise indicates a worn inboard CV joint.
5. If any CV joint components are worn or damaged, the
CV joint assembly must be replaced.
Workman 4000 Series Page 10 – 11 Front Wheel Drive (4WD)