Operator`s manual
34
bottom of the frame channels. Clamp it in this position
with a Vice-Grip 10CR or similar plier as illustrated in
Figure 7-10 and remove the drive chain.
3. With pliers, pry the slider block off the cam assembly as
illustrated in Figure 7-10.
4. Place a new slider block over the shaft of the cam assem-
bly.
5. Using a piece of wood (or similar material) pressed against
the top of the slider block, carefully hammer the piece of
wood so the slider block snaps onto the cam assembly shaft
as shown in Figure 7-11.
6. Re-install the drive chain and remove the locking pliers
securing the cam assembly in its lowest position.
7. Pull up on the cam assembly to allow it to take up as much
chain slack as possible.
8. Replace the oor pans.
Figure 7-10. Prying the Slider Block off the Cam Assembly.
SECTION 7
MAINTENANCE INFORMATION
THE CAM ASSEMBLY IS PROGRESSING PROPERLY.
CHECK FOR PROPER CHAIN TENSIONER OPERATION
EVERY 10 HOURS OF VEHICLE OPERATION, WHEN
THE DRIVE CHAINS ARE BEING LUBRICATED. Each
step of the cam takes up about 3 inches of chain slack (see
Fig. 7-8).
Figure 7-8. Chain slack required before the tensioner will
progress to the next step.
The tensioner cannot progress to the next step until there is
enough slack in the chain. With the wheels raised off the
ground, check if the chain slack exceeds 3 inches. If it does,
then reach under the slider block assembly and pull up. Re-
move any debris that may be present in the adjuster guides.
Check for proper chain tensioner operation every 10
hours of vehicle operation.
Each chain tensioner has a single UHMW slider block. Inspect
the UHMW slider blocks for wear every 50 hours. Replace
the blocks (ARGO Part No. 606-44) when the wear groove,
as shown in Figure 7-9, measures 1/4" (6mm).
Figure 7-9. Wear groove on the slider block.
To Replace a Slider Block:
1. Remove the oor pans.
2. Turn the tensioner cam assembly in the direction which
winds up the torsion spring and push the assembly down
as close as possible to the cam follower block across the