SkyTrak 8042 Service Manual - Manual (Page 194)

3.133 Model 8042, 10042, 10054 Legacy Rev. 03/04
Boom
28. Coat the threads of the threaded clevis (14) with
multi-purpose grease.
29. Have a second person assist with the next steps.
From the front of the boom, one person should pull
on the tow wire (12) while the person at the rear of
the boom guides the chain clevis between the two
center hoses of the hose reel and under the chain
sheave (16), on the left side of the boom (in front of
the hose reel assembly not shown for clarity) and
down the boom between the secondary intermediate
boom (17) and the primary intermediate boom (18).
The person at the front of the boom will need to pull
on both the tow wire (12) and the guide wire (15) at
the same time. Use the tow wire to take the weight of
the chain and the guide wire to guide the end of the
clevis through the boom.
30. The person at the back of the boom should keep the
retract chain lined up squarely with the chain sheave
and help feed the retract chain in while the second
person pulls on the wires from the front of the boom.
31. Once the clevis is near the tab on the underside of the
primary intermediate boom, using a phillips
screwdriver (19) in the countersunk hole in the end of
the clevis (20), may help to center the clevis in the
hole, while pulling on the guide wire (21).
32. Clip the guide (21) and tow (22) wires and remove the
wires from the boom clevis and the boom.
Once the threaded clevis is through the tab on the
primary intermediate boom:
Note: ALWAYS replace elastic locknuts with new elastic
locknuts to help ensure proper fastening.
33. Reassemble the saved flat washer (23), and a new
3/4-16 elastic locknut (24) onto the threaded
clevis (25). Tighten the locknut until the threaded
end of the clevis is flush with the top of the locknut.
34. Tighten the elastic locknut (24) on the retract chain
clevis (25) until the amount of threads protruding
beyond the elastic locknut is the same as the
measurement recorded during removal of the retract
chain.
35. Adjust retract chain tension. (Refer to Section 3.7.3,
“Boom Chain Tension Check.”)
MH6010
Front of Boom
12
13
14
15
MH6020
16
17
18
MH6000
19
20
21
22
MH6040
23
24
25