JLG 19BD Service Manual - Manual (Page 44)

SECTION 2 - SERVICE PROCEDURES
2-22 – JLG Lift – 3121154
MAST SECTION-2 - REMOVAL
12. Slide mast section-2 out TOP of mast section-1 far
enough to allow access to the chain assembly
anchor block/sheave wheel assembly.
13. Remove countersunk-flathead screws securing
chain anchor block/sheave wheel assembly attach
bars on both side rails at TOP of mast section-2.
14. Slide the chain anchor block/sheave wheel assem-
bly and hydraulic cylinder out the TOP of mast sec-
tion-2 far enough to allow removal of the sheave
wheel attach bars, sheave wheels and sheave pin
from chain assembly anchor block.
15. Remove the setscrew holding the hydraulic cylinder
rod onto the chain assembly anchor block. Lay
chain assembly/anchor block to side.
16. Remove the hydraulic cylinder through BOTTOM of
mast section-2, be careful not to nick or score cylin-
der rod surface while removing.
NOTE: When sliding mast sections apart, be careful not to
scratch or score the anodized finish in the slide pad
channels.
17. Carefully slide mast section-2 out BOTTOM of sec-
tion-1. Remove slide pads and shims, if necessary.
MAST SECTION-1 - DISASSEMBLY
18. Slide the TOP of remaining mast section-1 out over
edge of work surface and remove the pins attaching
the chain anchor block to mast section-1. Remove
chain/anchor block assemblies from mast and lay
aside.
19. Remove slide pads and shims from mast section-1.
Mast disassembly should now be complete.