Boom Lubrication Points; Carriage Fork Shafts And Wear Bar Lubrication; Emergency Boom Lowering And Retracting - JLG sky trak mmv Service Manual

4.3.8

Boom Lubrication Points

In general, lubricate the boom with multi-purpose grease
every 250 hours, more often as required by operating
conditions, and after servicing the boom.
250
Apply a premium grade of lithium-based multi-purpose
grease (MPG) via the grease fittings at these locations:
A. Boom pivot pins ..............................................4 points
B. Hydraulic cylinder pins .................................14 points
C. Quick attach pivot pin .....................................2 points
D. Chain sheave..................................................2 points
Note: Shorten the lubrication interval on all lube points
when operating under severe conditions or during high
cycling operation.
IMPORTANT: With the boom fully extended, apply
"LPS3", "LUBRIPLATE" chain and cable fluid or equiva-
lent to the two extend chains.
B
B (2)
Places
A (2)
C
Places
B
D
Model MMV Rev. 12/04
Apply Multi-Purpose
Grease (MPG) At
All Lubrication Points
A
B
C
B (4)
D
B
Places
B B
4.3.9 Carriage Fork Shafts and Wear Bar
Lubrication
Use ONLY Teflon Lube to coat the entire fork shaft (4)
and the wear bar (5). DO NOT apply grease or any other
type of petroleum based lubricant to these areas. Grease
and petroleum based lubricants attract debris which will
prematurely wear the fork bushings and/or wear pads.
Apply Teflon Lube as needed to keep forks sliding
side-to-side smoothly, when putting vehicle into storage
or when Teflon Lube appears to be worn off or rust starts
to appear on the fork shaft or wear bar.
MS06502
4.3.10 Emergency Boom Lowering and
Retracting
This section covers emergency boom lowering procedures.
Two types of conditions requiring emergency boom low-
ering are addressed; Engine or Hydraulic Pump Failure
(refer to Section 4.3.10, a. Engine or Hydraulic Pump
Failure ) or Hydraulic Line Failure (refer to Section 4.3.10,
b. Hydraulic Line Failure ).
Note: In all of the Emergency Boom Lowering Proce-
dures that follow, the low-pivot boom configurations are
shown. The high-pivot boom hose configurations are
similar, but are connected at different locations at the
rear of the boom. All procedures should be followed for
either boom configuration.
MM4140
Boom
4
5
OM0940
4.37