Tennant ATLV 4300 Service Manual page 136

2000 Series Disc Valve Motors
Reassembly
34 Align the notch on the outside of the valve plate with the notch on
the Geroler as shown in Figure 12.
Timing Step # 2 — Locate the slot opening in the valve plate which is
in line with the largest open pocket of the Geroler.
Timing Step # 3 — Locate any one of the side openings of the valve
and align this opening with the open slot of the valve plate that is in
line with the largest open pocket of the Geroler. Install the valve by
rotating it clockwise until the spine teeth engage (1/2 spine tooth
max.). This will provide the proper rotation when pressurized as
shown in Figure 13.
Clockwise
Rotation
Counter
Clockwise
Rotation
Spring and Pin
35 Install 2 springs and 2 pins in the holes located in the bore of the
valve housing, as shown in Figure 14.
36 Apply a light film of petroleum jelly to the 76,0 [3.00] diameter
seal. Install seal in the valve housing.
37 Apply petroleum jelly to inner and outer face seals. Install seals
on balance ring as shown in Figure 15.
6
Figure 13
Valve
Seal Housing
Figure 14
Important: Install face seals in the positions shown in Figure 15, or the
motor will not operate properly. Do not force or bend the face seals.
Any damage to these seals will affect the operation of the motor.
Outer Seal
38 Align pin notches in balance ring with pins in bore of valve housing.
Install balance ring assembly in valve housing.
Balance
Ring
Valve
Housing
Alignment
Studs
Valve
Plate
39 Insert your finger through port of valve housing. Apply pressure
to side of balance ring as shown in Figure 16. Hold ring in position
until valve housing is in place against valve plate (see Figure 17).
Note: After installing the valve housing on the valve plate check for
proper placement. Push down on the valve housing. You should
get a slight spring action.
Inner Seal Pin Notch
Balance Ring
Figure 15
Figure 16
Figure 17