Toro Groundsmaster 5900 Series Service Manual page 251

Wing Cutting Deck Lift Cylinder Disassembly
Wing Cutting Deck Lift Cylinder Assembly
Groundsmaster ® 5900 & 5910
16227SL Rev B
When securing shaft in vise, clamp on shaft clevis only. Do not
clamp vise jaws against the shaft surface.
5. Mount shaft securely in a vise by clamping on the clevis of the shaft. Remove
lock nut from the shaft. Slide shaft, cushion and head off the shaft.
6. Remove piston seal, wear ring and O−ring from the piston. Remove O−ring,
back−up ring, dust seal, wear ring and shaft seal from the head.
7. Wash parts in clean solvent. Dry parts with compressed air. Do not wipe parts
dry with paper towels or cloth. Lint in a hydraulic system will cause damage.
8. Carefully inspect internal surface of barrel for damage (deep scratches,
out−of−round, etc.). Replace entire cylinder if barrel is damaged. Inspect
shaft and piston for evidence of excessive scoring, pitting or wear. Replace
any damaged parts.
1. Make sure all parts are clean before assembly.
2. Coat new O−rings, piston seal, rod seal, back−up ring, wear rings and dust
seal with clean hydraulic oil.
A. Install piston seal, wear ring and O−ring to the piston.
B. Install back−up ring, O−ring, shaft seal, wear ring and dust seal to the
head.
When securing shaft in vise, clamp on shaft clevis only. Do not
clamp vise jaws against the shaft surface.
3. Mount shaft securely in a vise equipped with soft jaws by clamping on the
shaft clevis.
A. Coat shaft with clean hydraulic oil.
B. Slide external collar, head, cushion and piston onto the shaft.
C. Secure piston to shaft with lock nut. Torque lock nut to 176 N·m (130
ft-lb).
4. Lubricate head, cushion and piston with clean hydraulic oil. Slide shaft
assembly carefully into cylinder barrel.
Prevent damage when clamping the cylinder's barrel into a vise;
clamp on the barrel clevis only. Do not close vise on barrel.
5. Mount lift cylinder in a vise equipped with soft jaws by clamping on the
barrel clevis.
6. Use a spanner wrench to tighten collar onto barrel.
(Figure 129) (continued)
IMPORTANT
(Figure 129)
IMPORTANT
IMPORTANT
Page 5–151 Hydraulic System: Service and Repairs