JLG 340AJ, Service And Maintenance Manual

Page: 152 / 370

SECTION 4 - BOOM & PLATFORM
4-18 – JLG Lift – 3121259
Assembly
1. Gather all the components and tools into one location
prior to re-assembly. Use the cut away drawing to refer-
ence the seal orientations.
2. Coat the thrust washers (304) with a generous amount
of Lithium grease. Install the thrust washer (304) onto
shaft (2) and end cap (4).
3. Install the exclusion seal (304.1) into the appropriate
grooves on the shaft (2) and end cap (4) around the out-
side edge of the thrust washer (304).
4. Using a seal tool install the main pressure seal (205) onto
shaft (2) and end cap (4). Use the seal tool in a circular
motion.
5. Install the wear guide (302) on the end cap (4) and shaft
(2).
6. Install the O-ring (204) and back-up ring (207) into the
inner seal groove on the end cap (4).