JLG sky trak mmv Service Manual page 163

b. Intermediate Boom Installation
WARNING:
wear with reinforced toe caps and slip-resistant
soles. Failure to comply can result in foot or
other bodily injury from slipping or falling.
WARNING:
object without the help of at least one assistant
or a suitable sling and hoist. Failure to comply
can result in death or serious personal injury.
IMPORTANT: Light lubrication of the boom wear sur-
faces with a rust inhibitor/lubricant such as LPS 3 or
equivalent is recommended to keep the boom wear sur-
faces lubricated properly. Light lubrication of the boom
wear surfaces is also recommended in salt air climates,
and when the vehicle is stored, to help prevent rusting.
1. If the retract chain sheave and its attaching hardware
at the rear of the intermediate boom are not
installed, install these items before proceeding.
2. If needed, install the wear pads on the rear of the
intermediate boom before inserting the intermediate
boom into the outer boom. (Refer to Section 4.3.7,
Boom Wear Pads .) Coat the boom wear pad
capscrews with Loctite
®
Loctite to come into contact with wear pads. Use the
bolts and washers to secure the wear pads and
shims to the boom.
3. Use a suitable overhead lifting device and sling attached
to the intermediate boom (5); remove slack from the
hoist sling. Working from the front of the vehicle,
raise the intermediate boom and insert it into the
outer boom (3) a few feet (decimeters) at a time,
then reposition the sling. Continue inserting the
intermediate boom until it extends approximately two
feet (610 mm) from the outer boom.
4. Install the top, side and lower wear pads and spacers
on the outer boom. Coat the wear pad capscrews with
®
Loctite 242 (blue). DO NOT allow Loctite
into contact with wear pads.
5. Make sure that the hose track bracket (2) gets
installed with the front bolts for the left side wear
pads. Secure the fork side shift tube (1) with the
bulkhead nut (4).
Model MMV Rev. 12/04
Wear protective foot-
NEVER lift a heavy
®
242 (blue). DO NOT allow
®
to come
6. Continue installing the intermediate boom until it
makes contact with the outer boom. Remove the
overhead lifting device and sling.
7. Install the inner boom, extend/retract cylinder and
extend chain and attaching hardware. (Refer to
Section 4.3.2, b. Inner Boom Installation .)
8. Clean up all debris, hydraulic fluid, etc., in, on, near
and around the vehicle.
WARNING:
operation in closed areas without adequate
ventilation. Failure to properly ventilate exhaust
fumes can result in death or serious personal
injury.
9. Start the engine and operate all boom functions
several times. Check the chain tension again and
adjust as necessary (refer to Section 4.3.6, a. Boom
Chain Tension Check and Section 4.3.6, b. Extend
Chain Adjustment ). Check for leaks, and check the
hydraulic fluid level in the tank; add fluid if required.
10. Apply grease at all lubrication points (grease fittings).
(Refer to Section 4.3.8, Boom Lubrication Points .)
Boom
Avoid prolonged engine
4.19