Pinion Gear to Ring Gear Engagement
The final position of the pinion gear is verified by using
the gear contact pattern method as described in the fol-
lowing procedure.
PROFILE
TOP LAND
GEAR TOOTH DEFINITIONS (Fig. 29):
Toe – the portion of the tooth surface at the end to-
wards the center.
TOE
LENGTHWISE
BEARING
ARC
Heel – the portion of the gear tooth at the outer end.
Top Land – top surface of tooth.
HEEL
1.
side, with a gear marking compound, such as DyKem
Paint the teeth of the ring gear, both drive and coastR
ROOT
Steel Blue.
Figure 29
2.
Install the input shaft/pinion gear assembly into axle
case.
More than 35% total tooth contact
3.
While applying a light load to the ring gear, rotate the
pinion gear in the direction of forward travel until the ring
gear has made one complete revolution.
Ideal tooth contact observed on the ring gear should
cover more than 35% of each tooth surface. The contact
area should be in the center of each tooth and extend 1/3
to 1/2 way across each tooth from the toe end (Fig. 30).
1/3 to 1/2 of entire width
from small end of tooth
Figure 30
Adjustments to the gear contact position are made by
moving the input shaft/pinion gear (bearing case shims)
or by moving the differential gear case (differential bear-
ing shims) (Fig. 31).
4
3
NOTE: Bearing case shims are available in 0.004 in.
(0.10
mm) and 0.008 in. (0.20 mm) thickness.
NOTE: Differential bearing shims are available in
0.004
(0.40
in. (0.10 mm), 0.008 in. (0.20 mm) and 0.016 in.
mm) thickness.
Study the different contact patterns (Figs. 32 and 33)
and correct gear engagement as necessary.
2
NOTE: When making changes, note that two variables
are involved (see Gear Pattern Movement Summary in
this section of this manual).
1
Example: If the pinion gear to ring gear backlash is set
correctly to specifications and the bearing case shim is
changed to adjust tooth contact, it may be necessary to
readjust backlash to the correct specification before
checking the contact pattern.
Figure 31
Input shaft/pinion gear
Bearing case shims
Differential gear case
1.
2.
3.
4.
Differential bearing
shims
Groundsmaster 328–D
Page 10.1 – 17
4WD Rear Axle (Rev. G)
(Dae Dong Axle)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 300, Toro Groundsmaster 328 D, Toro Groundsmaster 92801SL |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. 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 Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(2 votes, average: 5 out of 5)
Lawn and Garden readers have rated Toro 92801SL Rev I Groundsmaster 300 Series Groundsmaster 328 D Service Manual 5.0 out of 5.0 based on 2 product reviews. Need 328D. Manual pdf. Will rate after finding manual
t has been a very reliable machine but getting parts is hard and not cheap to buy , generic parts has been cost effective and reliable , i am unable to get a wiring circut diagram for this unit as most problems are electrical problems