Woods Equipment LF138, LF156 manual Bucket Cylinders

With all of the seals installed, slide the rod guide assembly (5) onto rod (1).

Install crown piston seal (3J) onto piston (6). Install off- set rings (3H) on both sides of the crown piston seal (3J) in the large groove on the piston (6). The profile of the offset ring (3B) should mate with the lip on the crown piston seal (3J). Place the “L” shaped guide ring (3G) on the outside of each offset ring (3H). Boom cyl- inders require two additional wear rings (3K) to be installed in the two smaller grooves on the piston (6). Bucket cylinders have one wear ring.

Lightly coat rod threads with hydraulic oil and slide O- ring (3A) over threads and into groove. Completely clean threads of hydraulic oil, apply Liquid Primer 7649 and Loctite 242 to the rod threads, and thread piston

(6)onto rod (1) with the two holes in the piston orien- tated away from the rod. Torque the piston (6) to 160 lbs-ft.

Compress wear rings and piston seals and carefully insert piston and rod assembly into barrel. Use care to prevent damage while installing. Carefully screw rod guide (5) into barrel (8) using a spanner wrench, or carefully use a punch and hammer.

1.Piston rod

3A. O-Ring

3B. Wiper ring

3C. Rod seal

3D. Back-up ring

3E. O-Ring

3F. Rod guide ring

3G. Guard ring

3H. Offset ring

3J. Crown piston seal

3K. Wear ring

5.Rod guide assembly

6.Piston

8.Cylinder barrel

Figure 31. Bucket Cylinders

MAN0556 (9/21/2007) Dealer Service 27