Toro 05138SL Rev A Service Manual Groundsmaster 3280 D 3320 Preface Publication

General Information
Front Axle
The  Groundsmaster 3280−D  and  3320  use a  Dana
Axle, model GT-20. The differential and axle form the fi-
nal drive of the power train (Fig. 1).
The differential has a heavy duty case with automotive
type, cut  gears that rotate  on tapered roller  bearings.
Single-row, pre-set, tapered roller bearings are used on
the outside ends of the axle shafts.
The entire  drive line of  the axle assembly  is made of
alloy steel. The axle has  a die-cast aluminum housing
that also serves as the hydraulic oil reservoir.
Power is transmitted from the hydrostatic transmission
output gear to the axle pinion spur gear. The pinion spur
gear transmits  power  directly to  the differential  drive
gears, to turn the axles and the front wheels.
The differential axle has a one-piece axle shaft with the
flange being part of the axle stem.
Figure 1
4
Wheel Drive Rear Axle
The 4WD rear axle used on the Groundsmaster 3280−D
is a steerable, mechanical drive axle. A drive shaft con-
nected to the front axle output shaft provides power  to
the 4WD  rear axle. The drive  shaft incorporates a  bi-
directional clutch  that  transfers power  from the  drive
shaft to the 4WD rear axle input shaft (Fig. 2).
Any time the front wheels change speed (e.g. initially de-
pressing the  traction  pedal, climbing  an incline,  tires
slipping), the rear axle drive shaft speed also changes.
As soon as the drive shaft and the rear axle input shaft
turn at slightly different speeds, the bidirectional clutch
will engage  and power  is transferred to  the rear  axle
(Fig. 3). The  result is automatic four  wheel drive. The
clutch engages in either forward or reverse direction.
Figure 2
NOTE:  The bidirectional clutch may not operate prop-
erly if different size tires are used or if correct tire pres-
sure is not maintained.
FORWARD CLUTCH
ENGAGEMENT
NEUTRAL
(FREEWHEELING)
REVERSE CLUTCH
ENGAGEMENT
Figure 3
Groundsmaster 3280−D/3320
Page 8 − 3
Drive Axles
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
Tags,
Download File
Please Enter the Security Characters Shown Below. Letters are Case Sensitive. Your download link will appear upon completing this step.
- 260 pages
Document TypeCatalog
LanguageEnglish
Product BrandToro. Customer Service Representatives are available by phone: Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower
Document File TypePDF
Publishertoro.com
Wikipedia's PageToro Company
CopyrightAttribution Non-commercial
(0 votes, average: 0 out of 5)

Submit your review (optional)
(will not be displayed)
* Required Field

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*
Website