SkyTrak 6036 Service Manual - Manual (Page 78)

Boom
3-36 6036, 6042, 8042, 10042, 10054
c. Inner Boom Chain Tension Adjustment
Note: Always perform the Section 3.7.5, “Boom Chain
Tension Check,” before adjusting the fourth boom
section extend chain tension.
1. Adjust the fourth boom section extend chain:
If the chain sag measurement (19) is less than
2.85 in (72 mm), tighten the extend chain adjustment
locknut (1).
If the chain sag measurement (19) is more than
3.85 in (98 mm), loosen the extend chain adjustment
locknut (1).
2. If there is no adjustment left on the extend chains,
tighten the retract chain locknut (2) on the bottom of
the second boom section several turns.
3. Recheck chain tension. Refer to Section 3.7.5,
“Boom Chain Tension Check.”
4. Further chain adjustment can be achieved by
loosening both chain locknuts and moving the rear
retract chain clevis (3) from the original mounting
hole in the anchor plate to the next hole.
This is only acceptable when boom chain sag cannot
be acquired and the chain elongation measurement
is still less than 12.36 in (313 mm). Follow the
instructions in Section 3.7.7, d. “Component/
Assembly Verification.”
5. Recheck chain tension. (Refer to Section 3.7.5,
“Boom Chain Tension Check.”)
OA0493
19
MH1781
1
OH0661
2
MH4071
3