844/642 Telehandler LEAF CHAIN ADJUSTMENT

Leaf Chain Maintenance

The maintenance procedure listed below will apply to all three chain assemblies, the front double-chain assembly, visible at the front of the boom, and the single-chain assembly, located inside the rear of the boom. To gain access the rear boom cover must be removed.

Step 7

With the boom fully extended, inspect the double chains for cracked or broken plates, protruding or turned pins or excessive wear.

Step 8

With a tape measure, measure sixteen links of chain that flexes over the sheaves. If the distance measured is 12.375 inch (314.3 mm) or more, the chain should be replaced. See Section 704 and 705 of this manual for the correct single and double chain replacement procedure.

IMPORTANT: Do not repair or replace sections of the single-chain or double-chain assembly, replace the complete assembly.

Step 9

Inspect the clevis anchors (1) for broken pieces and wear. Check the sheaves (2) for worn flanges.

Step 10

Step 11

Inspect the single-chain (1) for wear or broken pieces. Check the sheave (2) for worn flanges.

Step 12

The single and double chains should be lubricated with 80/90 weight oil. Refer to the lubrication section of the Operator’s Manual.