SkyTrak 6036 Service Manual - Manual (Page 76)

Boom
3-34 6036, 6042, 8042, 10042, 10054
3.7.7 Boom Chain Tension Adjustment
(10054)
a. Outer Boom Chains Tension Adjustment
Note: Always perform Section 3.7.5, “Boom Chain
Tension Check.” before adjusting the boom extend chain
tension.
1. Adjust the two second and third boom section
extend chains.
If the chain sag measurement (10) is less than
2.85 in (72 mm), tighten the two extend chain
adjustment locknuts (11).
If the chain sag measurement (10) is more than
3.85 in (98 mm), loosen the two extend chain
adjustment locknuts (11).
2. Tighten or loosen the two extend chain adjustment
locknuts (11) located at the rear of the boom. Be
sure each of the locknuts are adjusted equally so
that each extend chain maintains the same tension.
Equal chain tension can be checked by the position
of the yoke (12) on the first boom section. The front
of the yoke should be parallel with the front edge of
the outer boom.
3. If there is no adjustment left on the extend chains,
tighten the retract chain locknut (13) at the front on
the underside of the boom.
4. Recheck chain tension. Refer to Section 3.7.5,
“Boom Chain Tension Check.”
OA0493
10
MH1781
11
OH0552
12
OA0513
13