Workman MDX--D
Drive Train
Page 4 -- 5
Drive Clutch Operation
The operation of the drive clutch is affected by engine
shaft speed. With the engine not turning, the CVT drive
belt rests low within the drive clutch sheaves as the pres-
sure of the spring holds the sheaves apart. As the en-
gine increases in speed, the clutch weights attached to
the moveable sheave move outward as they spin about
the engine driveshaft. The outward movement of the
clutch weights presses against the rollers and overcom-
es spring pressure through the spider assembly, which
forces the moveable sheave closer to the fixed sheave.
This inward movement of the sheave engages the drive
belt to drive the driven clutch.
With increasing engine speed, the moveable sheave
continues to move inward, which forces the drive belt to
ride towards the outer diameter of the clutch sheaves.
When engine speed is decreased, the clutch weights
exert less force on the rollers and thus the spring. The
spring pressure overcomes the force of the clutch
weights and shifts the moveable sheave away from the
fixed sheave. The drive belt disengages from the clutch
sheaves at a point where the force of the spring is great-
er than that of the clutch weights.
1. Fixed sheave
2. Moveable sheave
3. Spider assembly
4. Cover
5. Clutch weight (3 used)
6. Roller (3 used)
7. Spring
Figure 2
1
2
3
4
6
7
5
Drive
Train
Summary of Contents for Workman MDX-D
Page 2: ...Workman MDX D This page is intentionally blank...
Page 4: ...Workman MDX D This page is intentionally blank...
Page 12: ...0 09375 Workman MDX D Page 2 2 Product Records and Maintenance Equivalents and Conversions...
Page 20: ...Workman MDX D Page 3 4 Diesel Engine This page is intentionally blank...
Page 53: ...Workman MDX D Drive Train Page 4 19 This page is intentionally blank Drive Train...
Page 129: ...Workman MDX D Page 6 27 Chassis This page is intentionally blank Chassis...
Page 150: ...Workman MDX D Page 6 48 Chassis This page is intentionally blank...
Page 152: ...Page 7 2 Workman MDX D Electrical Drawings This page is intentionally blank...
Page 153: ...Page 7 3 Electrical Schematic Workman MDX D Relays are shown as de energized...
Page 154: ...Page 7 4 Glow Plug Circuits Power Current Control Current Indication Current...
Page 155: ...Page 7 5 Start Circuits Power Current Control Current Indication Current...
Page 156: ...Page 7 6 Run Circuits Power Current Control Current Indication Current...
Page 157: ...Page 7 7 This page is intentionally blank...
Page 158: ...Page 7 8 Main Electrical Harness Workman MDX D Wiring Drawing...
Page 160: ...Page 7 10 Engine Electrical Harness Workman MDX D BROWN BLACK FUSIBLE LINK RED BLUE WHITE BLUE...