Service Manual

ManualsBrandsToro ManualsAeratorsProCore SR70 Aerator

ProCore SR SeriesPage 3 -- 12Chassis

PTO Driveshaft Cross and Bearing Service

1. Remove PTO driveshaft from aerator (see PTO Dri-

veshaft Removal in this section).

2. If necessary, separate PTO driveshaft and remove

shields.

IMPORTANT: When placing yoke in vise, clamp

lightly o n the solid part of the yoke to prevent yoke

damage. Also, the use of a vise with soft jaws is rec-

ommended.

3. Lightly clamp yoke in vise with soft jaws . Remove

snap rings that secure bearings in each yoke. Remove

yoke from vise.

IMPORTANT: To prevent damage to driveshaft

yokes, support yokes when removing and installing

bearings.

4. Use a press to remove cross and bearings from

yokes:

A. Place a small socket against one bearing and a

large socket against the yoke on the opposite side.

B. While supporting the large socket, apply pres-

sure on small socket to partially push the opposite

bearing into the large socket.

C. Remove yoke from press, grasp partially re-

moved bearing and tap on yoke to completely re-

move the bearing.

D. Repeat process for remaining bearings.

E. Thoroughly clean and inspect all components.

5. To install new cross and bearings:

A. Apply a coating of grease to bearing bores of end

yoke and shaft yoke. Also, apply grease to bearings

and seal of bearing assembly. Make sure that all

bearing rollers are properly seated in bearing cage.

B. Press one bearing partially into yoke.

IMPORTANT: Take care when installing cross

into bearing to avoid damaging bearing seal.

C. Carefully insert cross into bearing and yoke.

D. Hold cross in alignment and press bearing in until

it hits the yoke.

E. Carefully place second bearing into yoke bore

and onto cross shaft. Press bearing into yoke.

F. Install snap rings to secure bearings in place.

G. Repeat procedure for other yoke.

H. Grease cross until grease comes out of all four (4)

bearing cups.

6. Make sure that assembled joint moves without bind-

ing. Slight binding can usually be eliminated by lightly

rapping the yoke lugs with a soft faced hammer. If bind-

ing continues, disassemble joint to identify source of

binding.

7. If driveshaft was separated for cross and bearing

service, install shields and assemble driveshaft halves.

8. Install PTO driveshaft to aerator (see PTO Driveshaft

Installation in this section).

1. End yoke

2. Cross and bearing kit

3. Snap ring (4 used)

4. Shaft yoke

Figure 14