Argo Frontier 600 6x6, Руководство оператора

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36
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. 7-12).
Figure 7-12. Chain slack required before the tensioner will pro-
gress 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 7-13, measures 1/4" (6mm).
Figure 7-13. Wear groove on the slider block.
To Replace a Slider Block:
1. Remove the floor 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
bottom of the frame channels. Clamp it in this position
with a Vice-Grip 10CR or similar plier as illustrated in
Figure 7-14 and remove the drive chain.
SECTION 7
MAINTENANCE INFORMATION
Figure 7-10. Chain connection link components.
7.2.4 DRIVE CHAIN TAKE-UP SYSTEM
Figure 7-11. Installing the connecting link
The chain tensioning system on all models consists of a torsion
spring loaded cam assembly with a slider block which takes
up the slack on the bottom side of all but the front final drive
chains. As the chain wears, the chain tensioning mechanism
adjusts semi-automatically. Under most conditions, the ten-
sioner cam assembly will move to the next step of adjustment
simply due to normal drive system dynamics. Sometimes,
however, the cam assembly can bind due to debris caught
in the area. IT IS VERY IMPORTANT TO CHECK THAT