Champion usn-72 Mode D'Emploi

Part 5: BASIC SERVICE

Drive shaft 

Bearing

To gearbox

 

Seal

Drive 

Shaft

Unload end

Refer to Fig. 6.6, Replacement Parts, for a detailed drawing of the take-up assembly.

It is recommended to replace both take-up bearings at the same time.

To replace the bearings:  Turn off all power to the dishwasher.  Drain the tanks and remove

the curtains and doors.  Loosen the jam nuts (Item 2) and remove all tension from the chains.

Locate the conveyor chain master links (1 per chain) and remove.  Pull the chains off the load end

gears and toward the unload end of the machine.  Remove the take-up assembly mounting bolts,

(Items 12-14).  With the aid of an assistant, lift the entire assembly off the lower mounting studs.

Turn the assembly diagonally in the machine until one end of the shaft extends out the load end of

the dishwasher. Remove the assembly from the machine.  Remove the set screw from one of the

chain drive gears and remove the gear.  Remove the set screws from the take-up bearings.  Pull

the drive shaft out of the bearings.  Snap the take-up bearings out of the housings, (Items 5-6).

Replace the bearings and reassemble in reverse order.  Adjust the chain tension as described

in Part 5.3.16.

Refer to Fig. 6.6, Replacement Parts, for a detailed drawing of the take-up assembly and the

drawing below for a detailed view of the drive shaft seal assembly.  It is recommended to replace

both drive shaft bearings at the same time.

To replace the bearings:  Refer to Fig 6.6, Replacement Parts. Turn off all power to the dish-

washer.  Drain the tanks and remove the curtains and doors.  Remove the chain drive cover at the

unload end of the machine.  Loosen the jam nuts (Fig. 6.6, Item 2) and remove all tension from

the chains.  Locate the conveyor chain master links (1 per chain) and remove.

Pull the chains off the unload end gears and toward the load end of the machine.

Refer to the drawing at right and

Fig 6.5, Part 6, Replacement Parts.

Remove the master link from

the #50 drive chain on the

outside of the machine.

Remove the set screws from

the main drive gear.  Remove

the drive gear.  Loosen the

set screws from the interior

stainless steel drive gears.

Remove set screws from the drive shaft bearings.

Remove the seal from the bore of the front drive

shaft bearing.  With the aid of an assistant, pull the

conveyor drive shaft out the front of the machine.

Remove the four (4) screws holding each of the

drive shaft bearings.  Replace the bearings and

reassemble in reverse order.  When the drive shaft

is set in the rear bearing, install a new seal. Complete

the reassembly.  Adjust the chain tension as described

in Part 5.3.16.  Return the dishwasher to service.