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To check the idler chain adjustment, push the slack side of the
chain and measure the amount of chain deflection (Figure 7-
15). Adjust the idler chain tension if deflection is more than
3mm (1/8").
Idler Chain Adjustment
1. Remove the firewall from the vehicle as detailed in Sec-
tion 7.3.1 for the Vanguard and Section 7.4.4 for the Van-
guard2, Bigfoot, Response and Conquest.
2. Loosen the 2 left side clamping nuts and 1 front pivot shaft
nut with a 15/16" socket wrench (figure 7-16). Loosen the
3/8" hex nut (117-15) securing the adjustment support (602-
27), just above the transmission, to the hood frame assem-
bly. (Refer to Section 6.0 of the Parts Manual.)
3. Turn the vertical adjustment bolts counter-clockwise to
raise the power pack and tighten the idler chains. The
idler chains are properly adjusted when the deflection
measures 3 mm (1/8"), (Figure 7-15).
4. Tighten the 2 left side clamping nuts and 1 pivot shaft nut
securely. Tighten the adjustable support fasteners with the
rubber bumper (126-88) pressed down firmly onto the top
of the transmission.
Figure 7-16. Location of power pack clamping nuts
and adjusting bolts
Idler Chain Replacement
Replacement of the idler chains is required if the adjustment
bolt is fully extended and idler chain deflection still exceeds 3
mm (1/8").
To Remove the Idler Chains:
Loosen the power pack clamping nuts and adjusting bolts as
shown in Figure 7-16 and proceed as follows:
SECTION 7
MAINTENANCE INFORMATION
1. Place the gearshift in neutral and roll the vehicle until the
connecting link of one of the idler chains is positioned as
shown in Figure 7-17.
2. Remove the spring clip from the connecting link. Remove
the outside plate and tap out the connecting link. As the
connecting link is removed, the inside plates will be re-
leased (refer to Figure 7-7).
3. Remove the idler chain from the vehicle.
4. Repeat steps 1 to 3 to remove the other idler chain.
Figure 7-17. Position of idler chain link for removal
To Install the Idler Chains:
1. Install the chain over the brake disc sprocket and the idler
shaft sprocket.
2. Pull the ends of the chains together and insert the connect-
ing link. Insert the inside plates before pushing the con-
necting link into position.
NOTE: Use a pair of modified 7R Vice Grips to hold the ends
of the chain together while inserting the connecting link. There
may be no slack in the idler chain, making installation of the
connecting link difficult without this tool. Modified Vice Grips
can be ordered from your ARGO dealer (ARGO Part No. 658-
08) or refer to Appendix 1 for modification information.
3. Replace the outside plate and spring clip as shown in Fig-
ure 7-7.
4. Repeat steps 1 to 3 to replace the other idler chain.
28
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