Toro Greensmaster 3120 Service Manual page 167

Disassembling the Front Lift Cylinder
Assembling the Front Lift Cylinder
Greensmaster 3120
17230SL Rev C
1. Remove any fluid from the cylinder by slowly pumping the cylinder rod while
holding the cylinder over a drain pan.
2. Plug both cylinder ports and clean the outside of the cylinder.
Do not clamp vise jaws against the cylinder barrel. Clamp on the
clevis ONLY.
3. Mount the cylinder securely in a vise by clamping on the clevis end of the
barrel. Using a vise with soft jaws is recommended.
4. Use a spanner wrench to rotate the internal collar counterclockwise until it
is free of the cylinder barrel.
5. Remove the plugs from the ports. Extract the rod, the head and the piston
assembly from the barrel by carefully twisting and pulling on the rod.
Do not clamp vise jaws against the cylinder rod surface. Clamp on
the clevis ONLY.
6. Mount the cylinder rod securely in a vise by clamping on the clevis of the rod.
Using a vise with soft jaws is recommended.
7. Remove the lock nut from the rod. Slide the piston and the head off the rod.
8. Remove the wear ring, the seals, the back−up ring and the O−rings from the
piston and the head.
1. Make sure all the cylinder components are clean before assembly.
2. Coat the new wear rings, the O−rings, the seals and the back−up ring with
clean hydraulic fluid.
A. Install the wear ring and the seal to the outside of the piston.
B. Install the O−ring to the inner bore of the piston.
C. Install the O−ring, the back−up ring and the rod seals to the cylinder head.
Do not clamp vise jaws against the cylinder rod surface. Clamp on
the clevis ONLY.
3. Mount the cylinder rod securely in a vise by clamping on the clevis of the rod.
Using a vise with soft jaws is recommended.
A. Coat the rod with a light layer of clean hydraulic fluid.
B. Carefully slide the head assembly and then the piston assembly onto the
rod. Install the lock nut onto the rod and tighten to 54 N−m (40 ft−lb).
C. Remove the rod assembly from the vise.
4. Coat all the internal parts with a light layer of clean hydraulic fluid. Slide
the piston, the rod and head assembly into the barrel being careful to not
damage the seals.
IMPORTANT
IMPORTANT
IMPORTANT
Page 4–121 Hydraulic System: Service and Repairs