SkyTrak 6036 Service Manual - Manual (Page 77)

3-35 6036, 6042, 8042, 10042, 10054
Boom
5. Further chain adjustment can be achieved by
loosening all three chain locknuts and moving the
rear retract chain clevis (14) 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, b. “Component/
Assembly Verification.”
6. Recheck chain tension. Refer to Section 3.7.5,
“Boom Chain Tension Check.”
b. Component/Assembly Verification
The third to second boom section separation should be
checked when assembling new boom sections or chains,
or when the rear retract chain clevis has been moved
forward on the anchor plate.
Measure the separation between the third (15) and
second (16) section boom top plates. The distance (17)
should be at least 8.5 in (216 mm) and not greater than
11 in (279 mm) with the boom fully retracted and the
chains properly tensioned. A distance of less than
8.5 in (216 mm) could result in interference and cause
damage to boom components.
If the distance is less than 8.5 in (216 mm) or greater than
11 in (279 mm):
1. Verify that the retract chain clevis is not mounted in
the last hole in the anchor plate.
2. Make sure that the chain system is properly
tensioned. Refer to Section 3.7.5, “Boom Chain
Tension Check.”.
3. To increase the separation distance: Loosen the
retract chain locknut (13) on the bottom of the boom
one or two turns and tighten the two extend chain
locknuts (18) equally the same number of turns. A
minimum of one full thread on the clevis must
protrude beyond the collar of the locknut.
4. To decrease the separation distance: Loosen the
extend chain locknuts (18) at the rear of boom
equally one or two turns and tighten the retract chain
locknut (13) the same number of turns. A minimum
of one full thread on the clevis must protrude beyond
the collar of the locknut.
Note: If the third to second boom section separation
distance cannot be achieved, contact your local
authorized service distributor.
MA9451
14
OH2862
15
16
17
MH1781
18