To 
mount the timing rotorseal:
a)Make sure that the air tube “O” rings (2) are in place.
b)Install the plastic insert (37A) in the head of the drive screw (37).
c)Install drive screw. Tighten the screw, being careful not to distort the end plate (36).
d)
e)Align the tang of shaft (6) with the slot in the drive screw insert, and align the grease holes in the adapter (1) with those in the hub of the flywheel or bullgear.
f)Install the lockwashers and mounting bolts. Tighten the mounting bolts uniform- ly SO the adapter flange fits squarely against the register face.
g)Inspect all air connection tubes and remove all burrs.
h)Lightly grease or oil the ends of the air tubes and insert them into the mating adapter holes.
i)Attach the opposite ends of the tubes to their connections.
j)Connect flexible air hose (35) to the center section and air supply line.
A! Caution:
Do not use a rigid pipe air line in place of the flexible air hose (35). Rigid pipe does not allow compensation for any eccentricity between the device and the shaft and will cause a preload condition that will shorten the bearing life of the device.
k)Apply air pressure and check for air leaks. Repair as required.
l)Remove air pressure.
m)Refer to appropriate paragraph and mount second timer.
Wiring instructions are given in Paragraph 2.2.
2.1.2.Foot Mounted Cam Limit Switch:
The foot mounted cam limit switch must be chain driven by the crankshaft. The sprocket ratio between the shaft and switch must be 1:1. Sprockets furnished by Airflex” are 3/8 in. pitch. Chain of proper length, determined by the placement of the timer, and the chain guard must be furnished by customer.
Mount the timer as follows:
a)Select a convenient mounting area for the timer so that there is no interference with the chain drive. Locate the timer as close as possible to the driving shaft so that the chain length is held to a minimum.
b) Rigidly attach a sprocket to the drivi g /i
shaft.
c)Key the other sprocket to the cam limit switch shaft and lock it in position with set screws and jam screws. The cam limit switch shaft diameter is .6250/.6245 inches, has a 3/16 inch square keyway and has a one inch long mounting length.
d)Fabricate a sturdy bracket or prepare the machine surface for mounting. Bear in mind that the bracket design or positioning of the switch will be influenced by the direction of rotation of the switch.
e)Position the switch so that the driving and driven sprockets are in alignment. Fasten the switch to its support with four 3/8 inch cap screws and lockwashers.
f)Attach and tension the drive chain following chain manufacturer’s recommendations.
g)Fabricate a guard to cover sprockets and chain.
h)Refer to appropriate paragraph and mount second timer.
Wiring instructions are given in Paragraph 2.2.
2.1.3 Shaft Mounted Cam Limit Switch:
The shaft mounted cam limit switch is designed for attaching directly to a shaft end. The shaft end must be machined as shown in Figure 3 to accept the shaft pilot and bolt circle.
Cam Limit Swtch
3.250
Dia B. C.
@ A .OlO D a . |
| ||
“i | |||
56 | |||
3’5 | PI/Of | Da. Y |
|
,376 | 1.25 | Deep |
|
Figure 3. Shaft machining details