Skytrak 6042 Service Manual User Manual download pdf (Page 98)

100

101

Boom

3.52

Model 6042 Legacy Origin 7/02

11. Measure the chain elongation. Measure across 17

pins (Fig. 3-110, 1), somewhere between the chain

sheave and where the chain is laying in the pan or

on the tarp. The maximum measurement allowed is

12-3/8" (313 mm). If the measurement is more than

12-3/8" (313 mm), the chain must

be replaced.

(Refer to Section 3.4.5, “Boom Extend and Retract

Chains Removal and Replacement.”)

Figure 3-110 Retract Chain Exposed for Inspection

Note: Chains and clevis’ are wear items and experience

the same stress. DO NOT attempt to repair a chain.

Replace a stretched or damaged chain with a new part.

Always replace both the chain and the clevis’.

12. If the chain needs to be replaced, refer to Section

3.4.5, “Boom Extend and Retract Chains Removal

and Replacement.”

13. Lubricate the chain, while it is exposed, if it does not

need to be replaced. (Refer to Section 3.4.2, “Chain

Lubrication.”)

14. Coat the threads of the threaded clevis

(Fig. 3-111, 1) with multi-purpose grease.

Note: Have a second person help with the installation of

the retract chain between the intermediate and outer

boom assemblies.

If a string or wire was installed to the end of the

clevis:

15. From the rear of the boom, one person should push

the threaded clevis end (Fig. 3-111, 1) of the retract

chain (3) under the chain sheave and down between

the intermediate boom and the outer boom. The

person at the front of the boom should pull the clevis

using the string or wire ( 2) attached to the clevis in

step 6. Push and pull the threaded clevis down to the

tab (4) at the front underside of the outer boom.

16. The person at the front of the boom should guide the

threaded end of the clevis (Fig. 3-111, 1) through

the hole in the tab (4).

Figure 3-111 Chain Clevis through Tab in Outer Boom

17. Remove the string or wire, and the threaded eye or

capscrew with flat washer, from the end of the clevis.

MA9350

MA9440

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