SkyTrak 6036 Service Manual - Manual (Page 90)

Boom
3.50 Model 6036 Legacy
4. Equal chain tension can be checked by the position
of the yoke (Fig. 3-108, 2) on the outer boom. The
front of the yoke should be parallel with the front
edge of the outer boom.
Figure 3-108 Boom Extend Chains and Yoke Plates
5. Start the vehicle, and cycle the boom in and out
several times. With the boom horizontal, fully extend
the boom and then retract it 2" (51 mm) (one inch
per section). Turn the engine OFF.
6. Measure the sag in the top boom extend chains
(Fig. 3-109, 1) between the bottom of the extend
chains and the top of the intermediate boom at their
closest point (2). Acceptable boom chain sag (3) is
between 1.5" (38 mm) and 2.5" (64 mm).
Note: If the top boom extend chain sag cannot be
adjusted within the acceptable range of 1.5" (38 mm) to
2.5" (64 mm), the boom may require extensive
adjustment and/or repair. Contact the JLG Service
Department or the nearest JLG Authorized Service Cen-
ter (ASC).
Figure 3-109 Measure the Extend Chain-to-Top of
Intermediate Boom Sag at the Closest Point
7. Install the rear cover (Fig. 3-110, 1) by inserting the
capscrew (2) at the top of the cover into the hole (3)
in the top of the boom. Secure the rear cover using
one thumbscrew (4), one internal-tooth lockwasher (5)
and one flat washer (6).
Figure 3-110 Install the Rear Cover on the Outer Boom
OH0240
1
OA0491
1
2
3
MA6420
3
2
1
5
4
6