25
MAINTENANCE
ADJUSTING SERVICE BRAKE
If brake lever (Fig. 35) contacts control handle when
brake is applied, an adjustment to the brake cable is
required. When the brake is fully applied, the end of the
lever should be a minimum of 1/2 inch from control
handle.
1. Interlock lever switches
2. Service brake
Figure 35
1
1
2
1. Remove screw and nut securing cable clevis to
brake lever (Fig. 36).
1. Screw and nut
2. Cable clevis
Figure 36
1
2
2. Thread cable clevis onto cabIe as required to attain
the 1/2 inch dimension.
3. Reinstall cable clevis to brake lever with screw and
nut.
4. Additional adjustment can be attained by
loosening jam nut at either end of brake cable conduit
and adjusting conduit inboard to tighten cable.
CHECK CORING HEAD CHAINS
After the first 5-10 hours of operation, tension on both
coring head chains must be checked and adjusted if
required.
1. Depress chain in span between the idler sprocket
and upper crank arm sprocket. Applying 8-12 Ibs. of
force on designated area, chain should deflect
approximately .25 inch (Fig. 37)
1. Coring head chain
2. Eyebolt nuts
Figure 37
2
1
2. Tighten or loosen each eyebolt nut to increase or
decrease chain tension. Make sure each eye bolt is
adjusted equally (Fig. 37).
3. Check adjustment by repeating previous steps.
4. To make sure eyebolts are adjusted equally,
measure distance from center of idler shaft to center of
upper crank shaft on both sides of shaft (Fig. 37).
5. Repeat procedure on other chain.
SERVICING ROLLER CHAINS
Cleaning When cleaning coring head chains, use
kerosene, fuel oil or diesel fuel.
Lubrication Lubricate chains with SAE 30 oil.
Routing Route chain as shown in figure 38.
1. Roller chain
2. ldler sprocket
Figure 38
1 2
Tensioning Loosen idler sprocket capscrew, slide
sprocket up into chain until firm resistance is felt, then
tighten capscrew.
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