Tennant T12 Training manual

IB 9010945 (07- 2014) 1
INSTRUCTION BULLETIN
No. 9010945
Machine: T12
Published: 07- 2014
Rev. 00
NOTE: DO NOT DISCARD the Parts List from the Instruction Bulletin. Place the
Parts List in the appropriate place in the machine manual for future
reference. Retaining the Parts List will make it easier to reorder
individual parts and will save the cost of ordering an entire kit.
NOTE: Numbers in parenthesis ( ) are reference numbers for parts listed in Bill of Materials.
Installation instructions for kit number 9009811
SYNOPSIS:
This kit contains the parts needed to install a disk scrub head onto a T12 scrubber.
Please follow step-by-step instructions.
SPECIAL TOOLS / CONSIDERATIONS: NONE
(Estimated time to complete: 4 hours)
PROTECT THE ENVIRONMENT
Please dispose of packaging materials, old machine components,
and hazardous fluids in an environmentally safe manner according
to local waste disposal regulations.
Always remember to recycle.
PREPARATION:
1. Park the machine on a clean level surface,
completely lower the scrub head, turn off the
machine, and remove the key.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, turn off
machine, and remove key.
2. Disconnect the battery cable from the
machine.
WARNING: Always disconnect battery
cables from machine before working on
electrical components.

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INSTALLATION:
Scrub head pivot arm (connected
to frame of machine)
Scrub head actuator (connected
to pivot bracket)
Scrub head links
(connected to frame
of machine)
Remove and save
clevis pin and
cotter pin
Remove and save M8 hex
screw, washer, and sleeve Remove and save
M8 hex screw,
washer, and sleeve
Remove and
discard M8 hex
screw, washers,
and lift pivot
Remove and discard M8 hex
screw, washers, and lift pivot
FIG. 1
1. Disconnect the wire harness from the brush
motors.
2. Disconnect the solution supply hose from the
scrub head. Set the hose clamp aside.
3. Disconnect the actuator from the scrub head.
Discard the cotter pin and clevis pin aside.
(Fig. 1)
4. Disconnect both scrub head links from the
scrub head. Discard the washers, hex screws,
and lift pivots. (Fig. 1)
5. Disconnect the scrub head pivot arm from the
scrub head. Save the washers, hex screws,
and both sleeves. (Fig. 1)
6. Chock the back of the rear tires and jack up
the front end of the machine. Refer to
MACHINE JACKING in the MAINTENANCE
section of the Operators Manual for additional
information for safely jacking up the machine.

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Hose
clamp
Solution supply hose
Water solenoid valve
Connect main wire
harness to front
brush motor
Connect main wire
harness to rear
brush motor
FRONT
FIG. 2
7. Position two jack stands at the designated
locations under the front of the machine and
lower the machine onto the jack stands.
FOR SAFETY: When servicing machine, block
machine tires before jacking machine up. Use
a hoist or jack that will support the weight of
the machine. Jack machine up at designated
locations only. Support machine with jack
stands.
8. Remove the scrub head from under the
machine. Move the removed scrub head
away from the machine and out of the way.
Set all removed mounting hardware aside.
9. Install brushes into the new scrub head and
position the scrub head near the machine.
10. Slide the new scrub head under the machine
and position the scrub head so all
components can be easily reconnected /
reinstalled in the following steps.
11. Connect the main wire harness to both brush
motors. (Fig. 2)
12. Use a hose clamp to connect the solution
supply hose to the water solenoid valve on the
scrub head. (Fig. 2)
13. Raise the machine off the jack stands,
remove the jack stands from under the
machine, and lower the machine to the floor.

IB 9010945 (07- 2014)4
14. Use the previously removed clevis pin and
cotter pin to connect the scrub head
actuator to the scrub head.
15. Use one M8 hex screw (1), one flat washer
(2), and one flat washer (7) to connect each
pivot (3) and both scrub head links to the
scrub head. Torque both M8 hex screws to
20 Nm (15 ft. lb.). (Fig. 3)
16. Use saved hardware to connect the scrub
head pivot arm to the scrub head. Torque
both M8 hex screws to 20 Nm (15 ft. lb.).
(Fig. 3)
1
2
1
2
3
Clevis pin and
cotter pin
20 Nm
(15 ft. lb.)
Saved hardware
Scrub head pivot arm
(connected to frame of
machine)
Scrub head actuator
(connected to pivot bracket)
Scrub head links
(connected to frame
of machine)
20 Nm
(15 ft. lb.)
37
7
Saved
hardware
20 Nm (15 ft. lb.)
20 Nm
(15 ft. lb.)
FIG. 3

IB 9010945 (07- 2014) 5
17. Raise the machine off the jack stands,
remove the jack stands from under the
machine, and lower the machine to the floor.
18. Use a clevis pin (4) and cotter pin (5) to install
the left scrub head squeegee assembly and
right scrub head squeegee assembly onto the
scrub head. (Fig. 4)
19. Use a M5 hex screw (6) to secure the cotter
pins (5) to the scrub head assembly. (Fig. 4)
20. Adjust the left scrub head squeegee assembly
and right scrub head squeegee assembly.
Open and close each scrub head squeegee
assembly and secure the each scrub head
squeegee assembly closed. (Fig. 4)
FRONT
4
4
65
6
5
Left scrub head
squeegee assembly
Right scrub head
squeegee assembly
Scrub head
assembly
FIG. 4

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21. Reconfigure the machine. Refer to the
Service Manual for instructions how to
reconfigure the machine for the new disk
scrub head.
22. Test machine: Start machine. Ensure scrub
head moves through entire range of motion
and the brushes function properly. Check the
brush pattern and adjustment and make
adjustments. Refer to the Service Manual for
instructions how to check the brush pattern
and make adjustments.
Bill Of Materials For Head Kit, Disk, DI [T12] - 9009811
Ref.
Tennant
Part No. Description Qty.
Y9009812 Parts Phantom, Head, Disk [T12] 1
Y9009885 Parts Phantom, Head, Side Sqge [T12] 1
Y1200430 Blade. Sqge, Side, 22.50L, Linatex 2
Parts used to install Head Kit, Disk, DI [T12] onto machine
Ref.
Tennant
Part No. Description Qty.
Y109026 Screw, Hex, M8 X 1.25 X 40, SS 2
Y2 01685 Washer, Flat, 0.38B, 0.88D, 0.08, SS 2
Y3 1201354 Pivot, Lift 2
Y4 1205975 Pin, Clevis, 0.37D X 5.00L 2
Y5 08236 Pin, Cotter, 0.156 X 1.25 2
Y6223198 Screw, Hex, M5 X 0.80 X 10, Fmg 2
Y7379829 Washer, Flat, 0.34B 1.50D .12, Stl, Pl 2
TENNANT COMPANY
P. O. Box 1452
Minneapolis, MN 55440-1452