Rear Sprocket Assembly, Removal And Replacement; Drive - Sprocket Assembly, Removal And Replacement - AMF MARK 23 (SD18E24A) Parts And Service Manual

c
c
c
3. Pull out the bogie -wheel assembly.
4. Remove the support shaft which holds the bogie -
wheel support assembly halves together.
5. Pull the bogie-wheel support halves apart to re-
move the springs.
6. Reassembly is the reverse of removal.
REAR SPROCKET ASSEMBLY, REMOVAL AND RE -
PLACEMENT
1. Place sled on kickstand.
2. Relieve traction- belt tension by loosening adjus t-
ing screws (3, figure 6).
3. Unlock the torsion springs connected to the
support arms.
4. Remove the right- and left- hand adjusting angle
locknuts (1).
5. Remove the rear sprocket ass embly.
6. Remove the support arms if necessary to replace
bearings, seals and sprockets.
7. Remove press-on bearings and grease seals .
8. Remove screws and nut securing sprocket plate
and sprocket.
9. Reassembly is the reverse of removal. During
reassembly follow instructions for traction-belt align-
ment and adjustment.
DRIVE-SPROCKET ASSEMBLY, REMOVAL AND RE-
PLACEMENT
1. Remove the hood assembly and set the sled on its
right side.
2. Remove the chain-housing cover plate.
Figure 8
5
3. Loosen the chain-adjustment locknut and push
down to slaCken drive chain.
4. Remove the sprocket from the drive shaft; re-
move chain.
5. Loosen traction-belt takeup and release torsion
springs. Drop takeup assembly clear of belt.
6. Using a screwdriver, carefully pry the oil seals
(figure 8) away from the ball bearings at each end of
the drive shaft.
7. Remove bearing retainer from right side of sled.
80 M,we the drive shaft and sprocket assembly
toward the right side until the shaft clears the bearing
retainer on the chain housing. Remove drive shaft and
sprocket assembly.
NOTE
When replacing the dri ve-sprocket assem-
bly, add 1-1/2 pints of No. 2 lithium
bearing grease to the chain-case housing
and coat the sprocket bearings liberally
with No.2 lithium bearing grease.
9. To replace the sprocket, remove the ball bearing,
oil seal and oil-seal retainer spring. Remove the
screws and nuts securing the support plate and
sprocket to the drive shaft and sprocket-plate assem-
bly; remove the sprocket.
10. Reassembly is the reverse of removal. Follow
instructions for traction-belt tension and drive-chain
adjustment and traction-belt alignment. Be sure to
pack chain case and sprocket bearings with No.2
lithium bearing grease.
Figure 9