Lull 1044C-54 Series II Service Manual - Manual (Page 308)

Frame Tilt and Oscillation
7-26 31200079
6. Slowly loosen each check valve (Item 16) on control block (labeled 3.1
and 3.2) to allow residual pressure to escape. After pressure has been
released, torque check valves to 50 ft-lbs.
7. Tag and disconnect three (3) hydraulic hoses (Items 5 and 6) at
oscillation control block. Cap hoses and fittings.
8. For models with control manifold hydraulics, disconnect wiring harness
electrical connection (Item 17) at oscillation control block.
9. Remove nut (Item 1), lockwasher (Item 2), and capscrew (Item 4)
securing cylinder upper pivot pin (Item 3) to frame.
10. Remove capscrew (Item 4), lockwasher (Item 2), and lock pin (Item 8)
securing cylinder lower pivot pin (Item 9).
11. Place a sling around cylinder (Item 15) and attach sling to suitable
lifting equipment. Make sure sling and lifting equipment have sufficient
capacity. The rear oscillation lock cylinder weighs approximately 200
pounds. Using lifting equipment, support weight of cylinder.
12. Remove upper and lower pivot pins (Items 3 and 9). Move cylinder out
and up from machine.
Installation
Rear Oscillation Lock
Cylinder (Ref. Fig. 7-17) The following steps are required to install the rear
oscillation lock cylinder:
1. Prior to installation, lubricate upper and lower pivot pins with a light
coating of grease.
2. Using suitable lifting equipment, position upper cylinder pivot at frame
pivot. Install upper pivot pin (Item 3) so hole in pin is aligned with hole
in frame boss. Secure upper pivot pin with capscrew (Item 4),
lockwasher (Item 2), and nut (Item 1). Torque nut to 180 in-lbs.
3. If necessary (models with a cylinder as illustrated in View A), install
mounting base (Item 12) with four (4) each capscrews (Item 7),
lockwashers (Item 10), and nuts (Item 11). Torque nuts to 280 ft-lbs.
4. If necessary (models with a cylinder as illustrated in View A), install
bushing (Item 20) in rear axle boss. Install bushing so that it is
centered in axle boss
5. Position lower cylinder pivot on axle and install lower pivot pin. Secure
pin with lock pin (Item 8), lockwasher (Item 2), and capscrew (Item 4).
Torque capscrew to 55 ft-lbs.
6. Attach hydraulic hoses to fittings on oscillation control block. Torque
nut on #8 hose (Item 6) to 44–48 ft-lbs. Torque nuts on #6 hoses
(Item 5) to 235–265 in-lbs (20–22 ft-lbs).
7. For models with a cylinder as illustrated in View A, connect electrical
lead from wiring harness (Item 17) at oscillation control block.
8. If necessary, install grease fittings (Items 13 and 19) and grease fitting
covers (Items 14 and 18). Torque grease fittings 1.5–3 turns past finger
tight. Lubricate upper and lower pivots with grease.